Perl is no longer in base. Long live the port!

1 files changed, 0 insertions, 3798 deletions

diff --git a/contrib/perl5/Porting/Glossary b/contrib/perl5/Porting/Glossary
deleted file mode 100644
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--- a/contrib/perl5/Porting/Glossary
+++ /dev/null
@@ -1,3798 +0,0 @@
-This file contains a description of all the shell variables whose value is
-determined by the Configure script.  Variables intended for use in C
-programs (e.g. I_UNISTD) are already described in config_h.SH.  [`configpm'
-generates pod documentation for Config.pm from this file--please try to keep
-the formatting regular.]
-
-_a (Unix.U):
-	This variable defines the extension used for ordinary libraries.
-	For unix, it is '.a'.  The '.' is included.  Other possible
-	values include '.lib'.
-
-_exe (Unix.U):
-	This variable defines the extension used for executable files.
-	For unix it is empty.  Other possible values include '.exe'.
-
-_o (Unix.U):
-	This variable defines the extension used for object files.
-	For unix, it is '.o'.  The '.' is included.  Other possible
-	values include '.obj'.
-
-afs (afs.U):
-	This variable is set to 'true' if AFS (Andrew File System) is used
-	on the system, 'false' otherwise.  It is possible to override this
-	with a hint value or command line option, but you'd better know
-	what you are doing.
-
-alignbytes (alignbytes.U):
-	This variable holds the number of bytes required to align a
-	double-- or a long double when applicable. Usual values are
-	2, 4 and 8.  The default is eight, for safety.
-
-ansi2knr (ansi2knr.U):
-	This variable is set if the user needs to run ansi2knr.  
-	Currently, this is not supported, so we just abort.
-
-aphostname (d_gethname.U):
-	This variable contains the command which can be used to compute the
-	host name. The command is fully qualified by its absolute path, to make
-	it safe when used by a process with super-user privileges.
-
-api_revision (patchlevel.U):
-	The three variables, api_revision, api_version, and
-	api_subversion, specify the version of the oldest perl binary
-	compatible with the present perl.  In a full version string
-	such as '5.6.1', api_revision is the '5'.
-	Prior to 5.5.640, the format was a floating point number,
-	like 5.00563.
-		perl.c:incpush() and lib/lib.pm will automatically search in
-	$sitelib/.. for older directories back to the limit specified
-	by these api_ variables.  This is only useful if you have a
-	perl library directory tree structured like the default one.
-	See INSTALL for how this works.  The versioned site_perl
-	directory was introduced in 5.005, so that is the lowest
-	possible value.  The version list appropriate for the current
-	system is determined in inc_version_list.U.
-		XXX To do:  Since compatibility can depend on compile time
-	options (such as bincompat, longlong, etc.) it should
-	(perhaps) be set by Configure, but currently it isn't.
-	Currently, we read a hard-wired value from patchlevel.h.
-	Perhaps what we ought to do is take the hard-wired value from
-	patchlevel.h but then modify it if the current Configure
-	options warrant.  patchlevel.h then would use an #ifdef guard.
-
-api_subversion (patchlevel.U):
-	The three variables, api_revision, api_version, and
-	api_subversion, specify the version of the oldest perl binary
-	compatible with the present perl.  In a full version string
-	such as '5.6.1', api_subversion is the '1'.  See api_revision for
-	full details.
-
-api_version (patchlevel.U):
-	The three variables, api_revision, api_version, and
-	api_subversion, specify the version of the oldest perl binary
-	compatible with the present perl.  In a full version string
-	such as '5.6.1', api_version is the '6'.  See api_revision for
-	full details.  As a special case, 5.5.0 is rendered in the
-	old-style as 5.005.  (In the 5.005_0x maintenance series,
-	this was the only versioned directory in $sitelib.)
-
-api_versionstring (patchlevel.U):
-	This variable combines api_revision, api_version, and
-	api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
-	for use as a directory name.  This is filesystem dependent.
-
-ar (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the ar program.  After Configure runs,
-	the value is reset to a plain "ar" and is not useful.
-
-archlib (archlib.U):
-	This variable holds the name of the directory in which the user wants
-	to put architecture-dependent public library files for $package.
-	It is most often a local directory such as /usr/local/lib.
-	Programs using this variable must be prepared to deal
-	with filename expansion.
-
-archlibexp (archlib.U):
-	This variable is the same as the archlib variable, but is
-	filename expanded at configuration time, for convenient use.
-
-archname64 (use64bits.U):
-	This variable is used for the 64-bitness part of $archname.
-
-archname (archname.U):
-	This variable is a short name to characterize the current
-	architecture.  It is used mainly to construct the default archlib.
-
-archobjs (Unix.U):
-	This variable defines any additional objects that must be linked
-	in with the program on this architecture.  On unix, it is usually
-	empty.  It is typically used to include emulations of unix calls
-	or other facilities.  For perl on OS/2, for example, this would
-	include os2/os2.obj.
-
-awk (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the awk program.  After Configure runs,
-	the value is reset to a plain "awk" and is not useful.
-
-baserev (baserev.U):
-	The base revision level of this package, from the .package file.
-
-bash (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-bin (bin.U):
-	This variable holds the name of the directory in which the user wants
-	to put publicly executable images for the package in question.  It
-	is most often a local directory such as /usr/local/bin. Programs using
-	this variable must be prepared to deal with ~name substitution.
-
-bincompat5005 (bincompat5005.U):
-	This variable contains y if this version of Perl should be
-	binary-compatible with Perl 5.005.
-
-binexp (bin.U):
-	This is the same as the bin variable, but is filename expanded at
-	configuration time, for use in your makefiles.
-
-bison (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-byacc (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the byacc program.  After Configure runs,
-	the value is reset to a plain "byacc" and is not useful.
-
-byteorder (byteorder.U):
-	This variable holds the byte order. In the following, larger digits
-	indicate more significance.  The variable byteorder is either 4321
-	on a big-endian machine, or 1234 on a little-endian, or 87654321
-	on a Cray ... or 3412 with weird order !
-
-c (n.U):
-	This variable contains the \c string if that is what causes the echo
-	command to suppress newline.  Otherwise it is null.  Correct usage is
-	$echo $n "prompt for a question: $c".
-
-castflags (d_castneg.U):
-	This variable contains a flag that precise difficulties the
-	compiler has casting odd floating values to unsigned long:
-	0 = ok
-	1 = couldn't cast < 0
-	2 = couldn't cast >= 0x80000000
-	4 = couldn't cast in argument expression list
-
-cat (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the cat program.  After Configure runs,
-	the value is reset to a plain "cat" and is not useful.
-
-cc (cc.U):
-	This variable holds the name of a command to execute a C compiler which
-	can resolve multiple global references that happen to have the same
-	name.  Usual values are 'cc' and 'gcc'.
-	Fervent ANSI compilers may be called 'c89'.  AIX has xlc.
-
-cccdlflags (dlsrc.U):
-	This variable contains any special flags that might need to be
-	passed with 'cc -c' to compile modules to be used to create a shared
-	library that will be used for dynamic loading.  For hpux, this
-	should be +z.  It is up to the makefile to use it.
-
-ccdlflags (dlsrc.U):
-	This variable contains any special flags that might need to be
-	passed to cc to link with a shared library for dynamic loading.
-	It is up to the makefile to use it.  For sunos 4.1, it should
-	be empty.
-
-ccflags (ccflags.U):
-	This variable contains any additional C compiler flags desired by
-	the user.  It is up to the Makefile to use this.
-
-ccflags_uselargefiles (uselfs.U):
-	This variable contains the compiler flags needed by large file builds
-	and added to ccflags by hints files.
-
-ccname (Checkcc.U):
-	This can set either by hints files or by Configure.  If using
-	gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
-	Some platforms, however, make good use of this by storing the
-	flavor of the C compiler being used here.  For example if using
-	the Sun WorkShop suite, ccname will be 'workshop'.
-
-ccsymbols (Cppsym.U):
-	The variable contains the symbols defined by the C compiler alone.
-	The symbols defined by cpp or by cc when it calls cpp are not in
-	this list, see cppsymbols and cppccsymbols.
-	The list is a space-separated list of symbol=value tokens.
-
-ccversion (Checkcc.U):
-	This can set either by hints files or by Configure.  If using
-	a (non-gcc) vendor cc, this variable may contain a version for
-	the compiler.
-
-cf_by (cf_who.U):
-	Login name of the person who ran the Configure script and answered the
-	questions. This is used to tag both config.sh and config_h.SH.
-
-cf_email (cf_email.U):
-	Electronic mail address of the person who ran Configure. This can be
-	used by units that require the user's e-mail, like MailList.U.
-
-cf_time (cf_who.U):
-	Holds the output of the "date" command when the configuration file was
-	produced. This is used to tag both config.sh and config_h.SH.
-
-charsize (charsize.U):
-	This variable contains the value of the CHARSIZE symbol, which
-	indicates to the C program how many bytes there are in a character.
-
-chgrp (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-chmod (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-chown (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-clocktype (d_times.U):
-	This variable holds the type returned by times(). It can be long,
-	or clock_t on BSD sites (in which case <sys/types.h> should be
-	included).
-
-comm (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the comm program.  After Configure runs,
-	the value is reset to a plain "comm" and is not useful.
-
-compress (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-CONFIGDOTSH (Oldsyms.U):
-	This is set to 'true' in config.sh so that a shell script
-	sourcing config.sh can tell if it has been sourced already.
-
-contains (contains.U):
-	This variable holds the command to do a grep with a proper return
-	status.  On most sane systems it is simply "grep".  On insane systems
-	it is a grep followed by a cat followed by a test.  This variable
-	is primarily for the use of other Configure units.
-
-cp (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the cp program.  After Configure runs,
-	the value is reset to a plain "cp" and is not useful.
-
-cpio (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-cpp (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the cpp program.  After Configure runs,
-	the value is reset to a plain "cpp" and is not useful.
-
-cpp_stuff (cpp_stuff.U):
-	This variable contains an identification of the catenation mechanism
-	used by the C preprocessor.
-
-cppccsymbols (Cppsym.U):
-	The variable contains the symbols defined by the C compiler
-	when it calls cpp.  The symbols defined by the cc alone or cpp
-	alone are not in this list, see ccsymbols and cppsymbols.
-	The list is a space-separated list of symbol=value tokens.
-
-cppflags (ccflags.U):
-	This variable holds the flags that will be passed to the C pre-
-	processor. It is up to the Makefile to use it.
-
-cpplast (cppstdin.U):
-	This variable has the same functionality as cppminus, only it applies
-	to cpprun and not cppstdin.
-
-cppminus (cppstdin.U):
-	This variable contains the second part of the string which will invoke
-	the C preprocessor on the standard input and produce to standard
-	output.  This variable will have the value "-" if cppstdin needs
-	a minus to specify standard input, otherwise the value is "".
-
-cpprun (cppstdin.U):
-	This variable contains the command which will invoke a C preprocessor
-	on standard input and put the output to stdout. It is guaranteed not
-	to be a wrapper and may be a null string if no preprocessor can be
-	made directly available. This preprocessor might be different from the
-	one used by the C compiler. Don't forget to append cpplast after the
-	preprocessor options.
-
-cppstdin (cppstdin.U):
-	This variable contains the command which will invoke the C
-	preprocessor on standard input and put the output to stdout.
-	It is primarily used by other Configure units that ask about
-	preprocessor symbols.
-
-cppsymbols (Cppsym.U):
-	The variable contains the symbols defined by the C preprocessor
-	alone.  The symbols defined by cc or by cc when it calls cpp are
-	not in this list, see ccsymbols and cppccsymbols.
-	The list is a space-separated list of symbol=value tokens.
-
-crosscompile (crosscompile.U):
-	This variable conditionally defines the CROSSCOMPILE symbol
-	which signifies that the build process is be a cross-compilation.
-	This is normally set by hints files or from Configure command line.
-
-cryptlib (d_crypt.U):
-	This variable holds -lcrypt or the path to a libcrypt.a archive if
-	the crypt() function is not defined in the standard C library. It is
-	up to the Makefile to use this.
-
-csh (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the csh program.  After Configure runs,
-	the value is reset to a plain "csh" and is not useful.
-
-d__fwalk (d__fwalk.U):
-	This variable conditionally defines HAS__FWALK if _fwalk() is
-	available to apply a function to all the file handles.
-
-d_access (d_access.U):
-	This variable conditionally defines HAS_ACCESS if the access() system
-	call is available to check for access permissions using real IDs.
-
-d_accessx (d_accessx.U):
-	This variable conditionally defines the HAS_ACCESSX symbol, which
-	indicates to the C program that the accessx() routine is available.
-
-d_alarm (d_alarm.U):
-	This variable conditionally defines the HAS_ALARM symbol, which
-	indicates to the C program that the alarm() routine is available.
-
-d_archlib (archlib.U):
-	This variable conditionally defines ARCHLIB to hold the pathname
-	of architecture-dependent library files for $package.  If
-	$archlib is the same as $privlib, then this is set to undef.
-
-d_atolf (atolf.U):
-	This variable conditionally defines the HAS_ATOLF symbol, which
-	indicates to the C program that the atolf() routine is available.
-
-d_atoll (atoll.U):
-	This variable conditionally defines the HAS_ATOLL symbol, which
-	indicates to the C program that the atoll() routine is available.
-
-d_attribut (d_attribut.U):
-	This variable conditionally defines HASATTRIBUTE, which
-	indicates the C compiler can check for function attributes,
-	such as printf formats.
-
-d_bcmp (d_bcmp.U):
-	This variable conditionally defines the HAS_BCMP symbol if
-	the bcmp() routine is available to compare strings.
-
-d_bcopy (d_bcopy.U):
-	This variable conditionally defines the HAS_BCOPY symbol if
-	the bcopy() routine is available to copy strings.
-
-d_bincompat5005 (bincompat5005.U):
-	This variable conditionally defines BINCOMPAT5005 so that embed.h
-	can take special action if this version of Perl should be
-	binary-compatible with Perl 5.005.  This is impossible for builds
-	that use features like threads and multiplicity it is always $undef
-	for those versions.
-
-d_bsd (Guess.U):
-	This symbol conditionally defines the symbol BSD when running on a
-	BSD system.
-
-d_bsdgetpgrp (d_getpgrp.U):
-	This variable conditionally defines USE_BSD_GETPGRP if
-	getpgrp needs one arguments whereas USG one needs none.
-
-d_bsdsetpgrp (d_setpgrp.U):
-	This variable conditionally defines USE_BSD_SETPGRP if
-	setpgrp needs two arguments whereas USG one needs none.
-	See also d_setpgid for a POSIX interface.
-
-d_bzero (d_bzero.U):
-	This variable conditionally defines the HAS_BZERO symbol if
-	the bzero() routine is available to set memory to 0.
-
-d_casti32 (d_casti32.U):
-	This variable conditionally defines CASTI32, which indicates
-	whether the C compiler can cast large floats to 32-bit ints.
-
-d_castneg (d_castneg.U):
-	This variable conditionally defines CASTNEG, which indicates
-	wether the C compiler can cast negative float to unsigned.
-
-d_charvspr (d_vprintf.U):
-	This variable conditionally defines CHARVSPRINTF if this system
-	has vsprintf returning type (char*).  The trend seems to be to
-	declare it as "int vsprintf()".
-
-d_chown (d_chown.U):
-	This variable conditionally defines the HAS_CHOWN symbol, which
-	indicates to the C program that the chown() routine is available.
-
-d_chroot (d_chroot.U):
-	This variable conditionally defines the HAS_CHROOT symbol, which
-	indicates to the C program that the chroot() routine is available.
-
-d_chsize (d_chsize.U):
-	This variable conditionally defines the CHSIZE symbol, which
-	indicates to the C program that the chsize() routine is available
-	to truncate files.  You might need a -lx to get this routine.
-
-d_closedir (d_closedir.U):
-	This variable conditionally defines HAS_CLOSEDIR if closedir() is
-	available.
-
-d_const (d_const.U):
-	This variable conditionally defines the HASCONST symbol, which
-	indicates to the C program that this C compiler knows about the
-	const type.
-
-d_crypt (d_crypt.U):
-	This variable conditionally defines the CRYPT symbol, which
-	indicates to the C program that the crypt() routine is available
-	to encrypt passwords and the like.
-
-d_csh (d_csh.U):
-	This variable conditionally defines the CSH symbol, which
-	indicates to the C program that the C-shell exists.
-
-d_cuserid (d_cuserid.U):
-	This variable conditionally defines the HAS_CUSERID symbol, which
-	indicates to the C program that the cuserid() routine is available
-	to get character login names.
-
-d_dbl_dig (d_dbl_dig.U):
-	This variable conditionally defines d_dbl_dig if this system's
-	header files provide DBL_DIG, which is the number of significant
-	digits in a double precision number.
-
-d_difftime (d_difftime.U):
-	This variable conditionally defines the HAS_DIFFTIME symbol, which
-	indicates to the C program that the difftime() routine is available.
-
-d_dirnamlen (i_dirent.U):
-	This variable conditionally defines DIRNAMLEN, which indicates
-	to the C program that the length of directory entry names is
-	provided by a d_namelen field.
-
-d_dlerror (d_dlerror.U):
-	This variable conditionally defines the HAS_DLERROR symbol, which
-	indicates to the C program that the dlerror() routine is available.
-
-d_dlopen (d_dlopen.U):
-	This variable conditionally defines the HAS_DLOPEN symbol, which
-	indicates to the C program that the dlopen() routine is available.
-
-d_dlsymun (d_dlsymun.U):
-	This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
-	indicates that we need to prepend an underscore to the symbol
-	name before calling dlsym().
-
-d_dosuid (d_dosuid.U):
-	This variable conditionally defines the symbol DOSUID, which
-	tells the C program that it should insert setuid emulation code
-	on hosts which have setuid #! scripts disabled.
-
-d_drand48proto (d_drand48proto.U):
-	This variable conditionally defines the HAS_DRAND48_PROTO symbol,
-	which indicates to the C program that the system provides
-	a prototype for the drand48() function.  Otherwise, it is
-	up to the program to supply one.
-
-d_dup2 (d_dup2.U):
-	This variable conditionally defines HAS_DUP2 if dup2() is
-	available to duplicate file descriptors.
-
-d_eaccess (d_eaccess.U):
-	This variable conditionally defines the HAS_EACCESS symbol, which
-	indicates to the C program that the eaccess() routine is available.
-
-d_endgrent (d_endgrent.U):
-	This variable conditionally defines the HAS_ENDGRENT symbol, which
-	indicates to the C program that the endgrent() routine is available
-	for sequential access of the group database.
-
-d_endhent (d_endhent.U):
-	This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
-	available to close whatever was being used for host queries.
-
-d_endnent (d_endnent.U):
-	This variable conditionally defines HAS_ENDNETENT if endnetent() is
-	available to close whatever was being used for network queries.
-
-d_endpent (d_endpent.U):
-	This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
-	available to close whatever was being used for protocol queries.
-
-d_endpwent (d_endpwent.U):
-	This variable conditionally defines the HAS_ENDPWENT symbol, which
-	indicates to the C program that the endpwent() routine is available
-	for sequential access of the passwd database.
-
-d_endsent (d_endsent.U):
-	This variable conditionally defines HAS_ENDSERVENT if endservent() is
-	available to close whatever was being used for service queries.
-
-d_eofnblk (nblock_io.U):
-	This variable conditionally defines EOF_NONBLOCK if EOF can be seen
-	when reading from a non-blocking I/O source.
-
-d_eunice (Guess.U):
-	This variable conditionally defines the symbols EUNICE and VAX, which
-	alerts the C program that it must deal with ideosyncracies of VMS.
-
-d_fchmod (d_fchmod.U):
-	This variable conditionally defines the HAS_FCHMOD symbol, which
-	indicates to the C program that the fchmod() routine is available
-	to change mode of opened files.
-
-d_fchown (d_fchown.U):
-	This variable conditionally defines the HAS_FCHOWN symbol, which
-	indicates to the C program that the fchown() routine is available
-	to change ownership of opened files.
-
-d_fcntl (d_fcntl.U):
-	This variable conditionally defines the HAS_FCNTL symbol, and indicates
-	whether the fcntl() function exists
-
-d_fcntl_can_lock (d_fcntl_can_lock.U):
-	This variable conditionally defines the FCNTL_CAN_LOCK symbol
-	and indicates whether file locking with fcntl() works.
-
-d_fd_macros (d_fd_set.U):
-	This variable contains the eventual value of the HAS_FD_MACROS symbol,
-	which indicates if your C compiler knows about the macros which
-	manipulate an fd_set.
-
-d_fd_set (d_fd_set.U):
-	This variable contains the eventual value of the HAS_FD_SET symbol,
-	which indicates if your C compiler knows about the fd_set typedef.
-
-d_fds_bits (d_fd_set.U):
-	This variable contains the eventual value of the HAS_FDS_BITS symbol,
-	which indicates if your fd_set typedef contains the fds_bits member.
-	If you have an fd_set typedef, but the dweebs who installed it did
-	a half-fast job and neglected to provide the macros to manipulate
-	an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
-
-d_fgetpos (d_fgetpos.U):
-	This variable conditionally defines HAS_FGETPOS if fgetpos() is
-	available to get the file position indicator.
-
-d_flexfnam (d_flexfnam.U):
-	This variable conditionally defines the FLEXFILENAMES symbol, which
-	indicates that the system supports filenames longer than 14 characters.
-
-d_flock (d_flock.U):
-	This variable conditionally defines HAS_FLOCK if flock() is
-	available to do file locking.
-
-d_fork (d_fork.U):
-	This variable conditionally defines the HAS_FORK symbol, which
-	indicates to the C program that the fork() routine is available.
-
-d_fpathconf (d_pathconf.U):
-	This variable conditionally defines the HAS_FPATHCONF symbol, which
-	indicates to the C program that the pathconf() routine is available
-	to determine file-system related limits and options associated
-	with a given open file descriptor.
-
-d_fpos64_t (d_fpos64_t.U):
-	This symbol will be defined if the C compiler supports fpos64_t.
-
-d_frexpl (d_frexpl.U):
-	This variable conditionally defines the HAS_FREXPL symbol, which
-	indicates to the C program that the frexpl() routine is available.
-
-d_fs_data_s (d_fs_data_s.U):
-	This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
-	which indicates that the struct fs_data is supported.
-
-d_fseeko (d_fseeko.U):
-	This variable conditionally defines the HAS_FSEEKO symbol, which
-	indicates to the C program that the fseeko() routine is available.
-
-d_fsetpos (d_fsetpos.U):
-	This variable conditionally defines HAS_FSETPOS if fsetpos() is
-	available to set the file position indicator.
-
-d_fstatfs (d_fstatfs.U):
-	This variable conditionally defines the HAS_FSTATFS symbol, which
-	indicates to the C program that the fstatfs() routine is available.
-
-d_fstatvfs (d_statvfs.U):
-	This variable conditionally defines the HAS_FSTATVFS symbol, which
-	indicates to the C program that the fstatvfs() routine is available.
-
-d_fsync (d_fsync.U):
-	This variable conditionally defines the HAS_FSYNC symbol, which
-	indicates to the C program that the fsync() routine is available.
-
-d_ftello (d_ftello.U):
-	This variable conditionally defines the HAS_FTELLO symbol, which
-	indicates to the C program that the ftello() routine is available.
-
-d_ftime (d_ftime.U):
-	This variable conditionally defines the HAS_FTIME symbol, which indicates
-	that the ftime() routine exists.  The ftime() routine is basically
-	a sub-second accuracy clock.
-
-d_Gconvert (d_gconvert.U):
-	This variable holds what Gconvert is defined as to convert
-	floating point numbers into strings. It could be 'gconvert'
-	or a more complex macro emulating gconvert with gcvt() or sprintf.
-	Possible values are:
-	d_Gconvert='gconvert((x),(n),(t),(b))'
-	d_Gconvert='gcvt((x),(n),(b))'
-	d_Gconvert='sprintf((b),"%.*g",(n),(x))'
-
-d_getcwd (d_getcwd.U):
-	This variable conditionally defines the HAS_GETCWD symbol, which
-	indicates to the C program that the getcwd() routine is available
-	to get the current working directory.
-
-d_getespwnam (d_getespwnam.U):
-	This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
-	available to retrieve enchanced (shadow) password entries by name.
-
-d_getfsstat (d_getfsstat.U):
-	This variable conditionally defines the HAS_GETFSSTAT symbol, which
-	indicates to the C program that the getfsstat() routine is available.
-
-d_getgrent (d_getgrent.U):
-	This variable conditionally defines the HAS_GETGRENT symbol, which
-	indicates to the C program that the getgrent() routine is available
-	for sequential access of the group database.
-
-d_getgrps (d_getgrps.U):
-	This variable conditionally defines the HAS_GETGROUPS symbol, which
-	indicates to the C program that the getgroups() routine is available
-	to get the list of process groups.
-
-d_gethbyaddr (d_gethbyad.U):
-	This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
-	indicates to the C program that the gethostbyaddr() routine is available
-	to look up hosts by their IP addresses.
-
-d_gethbyname (d_gethbynm.U):
-	This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
-	indicates to the C program that the gethostbyname() routine is available
-	to look up host names in some data base or other.
-
-d_gethent (d_gethent.U):
-	This variable conditionally defines HAS_GETHOSTENT if gethostent() is
-	available to look up host names in some data base or another.
-
-d_gethname (d_gethname.U):
-	This variable conditionally defines the HAS_GETHOSTNAME symbol, which
-	indicates to the C program that the gethostname() routine may be
-	used to derive the host name.
-
-d_gethostprotos (d_gethostprotos.U):
-	This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
-	which indicates to the C program that <netdb.h> supplies
-	prototypes for the various gethost*() functions.  
-	See also netdbtype.U for probing for various netdb types.
-
-d_getlogin (d_getlogin.U):
-	This variable conditionally defines the HAS_GETLOGIN symbol, which
-	indicates to the C program that the getlogin() routine is available
-	to get the login name.
-
-d_getmnt (d_getmnt.U):
-	This variable conditionally defines the HAS_GETMNT symbol, which
-	indicates to the C program that the getmnt() routine is available
-	to retrieve one or more mount info blocks by filename.
-
-d_getmntent (d_getmntent.U):
-	This variable conditionally defines the HAS_GETMNTENT symbol, which
-	indicates to the C program that the getmntent() routine is available
-	to iterate through mounted files to get their mount info.
-
-d_getnbyaddr (d_getnbyad.U):
-	This variable conditionally defines the HAS_GETNETBYADDR symbol, which
-	indicates to the C program that the getnetbyaddr() routine is available
-	to look up networks by their IP addresses.
-
-d_getnbyname (d_getnbynm.U):
-	This variable conditionally defines the HAS_GETNETBYNAME symbol, which
-	indicates to the C program that the getnetbyname() routine is available
-	to look up networks by their names.
-
-d_getnent (d_getnent.U):
-	This variable conditionally defines HAS_GETNETENT if getnetent() is
-	available to look up network names in some data base or another.
-
-d_getnetprotos (d_getnetprotos.U):
-	This variable conditionally defines the HAS_GETNET_PROTOS symbol,
-	which indicates to the C program that <netdb.h> supplies
-	prototypes for the various getnet*() functions.  
-	See also netdbtype.U for probing for various netdb types.
-
-d_getpagsz (d_getpagsz.U):
-	This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
-	is available to get the system page size.
-
-d_getpbyname (d_getprotby.U):
-	This variable conditionally defines the HAS_GETPROTOBYNAME 
-	symbol, which indicates to the C program that the 
-	getprotobyname() routine is available to look up protocols
-	by their name.
-
-d_getpbynumber (d_getprotby.U):
-	This variable conditionally defines the HAS_GETPROTOBYNUMBER 
-	symbol, which indicates to the C program that the 
-	getprotobynumber() routine is available to look up protocols
-	by their number.
-
-d_getpent (d_getpent.U):
-	This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
-	available to look up protocols in some data base or another.
-
-d_getpgid (d_getpgid.U):
-	This variable conditionally defines the HAS_GETPGID symbol, which
-	indicates to the C program that the getpgid(pid) function
-	is available to get the process group id.
-
-d_getpgrp2 (d_getpgrp2.U):
-	This variable conditionally defines the HAS_GETPGRP2 symbol, which
-	indicates to the C program that the getpgrp2() (as in DG/UX) routine
-	is available to get the current process group.
-
-d_getpgrp (d_getpgrp.U):
-	This variable conditionally defines HAS_GETPGRP if getpgrp() is
-	available to get the current process group.
-
-d_getppid (d_getppid.U):
-	This variable conditionally defines the HAS_GETPPID symbol, which
-	indicates to the C program that the getppid() routine is available
-	to get the parent process ID.
-
-d_getprior (d_getprior.U):
-	This variable conditionally defines HAS_GETPRIORITY if getpriority()
-	is available to get a process's priority.
-
-d_getprotoprotos (d_getprotoprotos.U):
-	This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
-	which indicates to the C program that <netdb.h> supplies
-	prototypes for the various getproto*() functions.  
-	See also netdbtype.U for probing for various netdb types.
-
-d_getprpwnam (d_getprpwnam.U):
-	This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
-	available to retrieve protected (shadow) password entries by name.
-
-d_getpwent (d_getpwent.U):
-	This variable conditionally defines the HAS_GETPWENT symbol, which
-	indicates to the C program that the getpwent() routine is available
-	for sequential access of the passwd database.
-
-d_getsbyname (d_getsrvby.U):
-	This variable conditionally defines the HAS_GETSERVBYNAME 
-	symbol, which indicates to the C program that the 
-	getservbyname() routine is available to look up services
-	by their name.
-
-d_getsbyport (d_getsrvby.U):
-	This variable conditionally defines the HAS_GETSERVBYPORT 
-	symbol, which indicates to the C program that the 
-	getservbyport() routine is available to look up services
-	by their port.
-
-d_getsent (d_getsent.U):
-	This variable conditionally defines HAS_GETSERVENT if getservent() is
-	available to look up network services in some data base or another.
-
-d_getservprotos (d_getservprotos.U):
-	This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
-	which indicates to the C program that <netdb.h> supplies
-	prototypes for the various getserv*() functions.  
-	See also netdbtype.U for probing for various netdb types.
-
-d_getspnam (d_getspnam.U):
-	This variable conditionally defines HAS_GETSPNAM if getspnam() is
-	available to retrieve SysV shadow password entries by name.
-
-d_gettimeod (d_ftime.U):
-	This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
-	indicates that the gettimeofday() system call exists (to obtain a
-	sub-second accuracy clock). You should probably include <sys/resource.h>.
-
-d_gnulibc (d_gnulibc.U):
-	Defined if we're dealing with the GNU C Library.
-
-d_grpasswd (i_grp.U):
-	This variable conditionally defines GRPASSWD, which indicates
-	that struct group in <grp.h> contains gr_passwd.
-
-d_hasmntopt (d_hasmntopt.U):
-	This variable conditionally defines the HAS_HASMNTOPT symbol, which
-	indicates to the C program that the hasmntopt() routine is available
-	to query the mount options of file systems.
-
-d_htonl (d_htonl.U):
-	This variable conditionally defines HAS_HTONL if htonl() and its
-	friends are available to do network order byte swapping.
-
-d_iconv (d_iconv.U):
-	This variable conditionally defines the HAS_ICONV symbol, which
-	indicates to the C program that the iconv() routine is available.
-
-d_index (d_strchr.U):
-	This variable conditionally defines HAS_INDEX if index() and
-	rindex() are available for string searching.
-
-d_inetaton (d_inetaton.U):
-	This variable conditionally defines the HAS_INET_ATON symbol, which
-	indicates to the C program that the inet_aton() function is available
-	to parse IP address "dotted-quad" strings.
-
-d_int64_t (d_int64_t.U):
-	This symbol will be defined if the C compiler supports int64_t.
-
-d_isascii (d_isascii.U):
-	This variable conditionally defines the HAS_ISASCII constant,
-	which indicates to the C program that isascii() is available.
-
-d_isnan (d_isnan.U):
-	This variable conditionally defines the HAS_ISNAN symbol, which
-	indicates to the C program that the isnan() routine is available.
-
-d_isnanl (d_isnanl.U):
-	This variable conditionally defines the HAS_ISNANL symbol, which
-	indicates to the C program that the isnanl() routine is available.
-
-d_killpg (d_killpg.U):
-	This variable conditionally defines the HAS_KILLPG symbol, which
-	indicates to the C program that the killpg() routine is available
-	to kill process groups.
-
-d_lchown (d_lchown.U):
-	This variable conditionally defines the HAS_LCHOWN symbol, which
-	indicates to the C program that the lchown() routine is available
-	to operate on a symbolic link (instead of following the link).
-
-d_ldbl_dig (d_ldbl_dig.U):
-	This variable conditionally defines d_ldbl_dig if this system's
-	header files provide LDBL_DIG, which is the number of significant
-	digits in a long double precision number.
-
-d_link (d_link.U):
-	This variable conditionally defines HAS_LINK if link() is
-	available to create hard links.
-
-d_locconv (d_locconv.U):
-	This variable conditionally defines HAS_LOCALECONV if localeconv() is
-	available for numeric and monetary formatting conventions.
-
-d_lockf (d_lockf.U):
-	This variable conditionally defines HAS_LOCKF if lockf() is
-	available to do file locking.
-
-d_longdbl (d_longdbl.U):
-	This variable conditionally defines HAS_LONG_DOUBLE if 
-	the long double type is supported.
-
-d_longlong (d_longlong.U):
-	This variable conditionally defines HAS_LONG_LONG if 
-	the long long type is supported.
-
-d_lseekproto (d_lseekproto.U):
-	This variable conditionally defines the HAS_LSEEK_PROTO symbol,
-	which indicates to the C program that the system provides
-	a prototype for the lseek() function.  Otherwise, it is
-	up to the program to supply one.
-
-d_lstat (d_lstat.U):
-	This variable conditionally defines HAS_LSTAT if lstat() is
-	available to do file stats on symbolic links.
-
-d_madvise (d_madvise.U):
-	This variable conditionally defines HAS_MADVISE if madvise() is
-	available to map a file into memory.
-
-d_mblen (d_mblen.U):
-	This variable conditionally defines the HAS_MBLEN symbol, which
-	indicates to the C program that the mblen() routine is available
-	to find the number of bytes in a multibye character.
-
-d_mbstowcs (d_mbstowcs.U):
-	This variable conditionally defines the HAS_MBSTOWCS symbol, which
-	indicates to the C program that the mbstowcs() routine is available
-	to convert a multibyte string into a wide character string.
-
-d_mbtowc (d_mbtowc.U):
-	This variable conditionally defines the HAS_MBTOWC symbol, which
-	indicates to the C program that the mbtowc() routine is available
-	to convert multibyte to a wide character.
-
-d_memchr (d_memchr.U):
-	This variable conditionally defines the HAS_MEMCHR symbol, which
-	indicates to the C program that the memchr() routine is available
-	to locate characters within a C string.
-
-d_memcmp (d_memcmp.U):
-	This variable conditionally defines the HAS_MEMCMP symbol, which
-	indicates to the C program that the memcmp() routine is available
-	to compare blocks of memory.
-
-d_memcpy (d_memcpy.U):
-	This variable conditionally defines the HAS_MEMCPY symbol, which
-	indicates to the C program that the memcpy() routine is available
-	to copy blocks of memory.
-
-d_memmove (d_memmove.U):
-	This variable conditionally defines the HAS_MEMMOVE symbol, which
-	indicates to the C program that the memmove() routine is available
-	to copy potentatially overlapping blocks of memory.
-
-d_memset (d_memset.U):
-	This variable conditionally defines the HAS_MEMSET symbol, which
-	indicates to the C program that the memset() routine is available
-	to set blocks of memory.
-
-d_mkdir (d_mkdir.U):
-	This variable conditionally defines the HAS_MKDIR symbol, which
-	indicates to the C program that the mkdir() routine is available
-	to create directories..
-
-d_mkdtemp (d_mkdtemp.U):
-	This variable conditionally defines the HAS_MKDTEMP symbol, which
-	indicates to the C program that the mkdtemp() routine is available
-	to exclusively create a uniquely named temporary directory.
-
-d_mkfifo (d_mkfifo.U):
-	This variable conditionally defines the HAS_MKFIFO symbol, which
-	indicates to the C program that the mkfifo() routine is available.
-
-d_mkstemp (d_mkstemp.U):
-	This variable conditionally defines the HAS_MKSTEMP symbol, which
-	indicates to the C program that the mkstemp() routine is available
-	to exclusively create and open a uniquely named temporary file.
-
-d_mkstemps (d_mkstemps.U):
-	This variable conditionally defines the HAS_MKSTEMPS symbol, which
-	indicates to the C program that the mkstemps() routine is available
-	to exclusively create and open a uniquely named (with a suffix)
-	temporary file.
-
-d_mktime (d_mktime.U):
-	This variable conditionally defines the HAS_MKTIME symbol, which
-	indicates to the C program that the mktime() routine is available.
-
-d_mmap (d_mmap.U):
-	This variable conditionally defines HAS_MMAP if mmap() is
-	available to map a file into memory.
-
-d_modfl (d_modfl.U):
-	This variable conditionally defines the HAS_MODFL symbol, which
-	indicates to the C program that the modfl() routine is available.
-
-d_mprotect (d_mprotect.U):
-	This variable conditionally defines HAS_MPROTECT if mprotect() is
-	available to modify the access protection of a memory mapped file.
-
-d_msg (d_msg.U):
-	This variable conditionally defines the HAS_MSG symbol, which
-	indicates that the entire msg*(2) library is present.
-
-d_msg_ctrunc (d_socket.U):
-	This variable conditionally defines the HAS_MSG_CTRUNC symbol,
-	which indicates that the MSG_CTRUNC is available.  #ifdef is
-	not enough because it may be an enum, glibc has been known to do this.
-
-d_msg_dontroute (d_socket.U):
-	This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
-	which indicates that the MSG_DONTROUTE is available.  #ifdef is
-	not enough because it may be an enum, glibc has been known to do this.
-
-d_msg_oob (d_socket.U):
-	This variable conditionally defines the HAS_MSG_OOB symbol,
-	which indicates that the MSG_OOB is available.  #ifdef is
-	not enough because it may be an enum, glibc has been known to do this.
-
-d_msg_peek (d_socket.U):
-	This variable conditionally defines the HAS_MSG_PEEK symbol,
-	which indicates that the MSG_PEEK is available.  #ifdef is
-	not enough because it may be an enum, glibc has been known to do this.
-
-d_msg_proxy (d_socket.U):
-	This variable conditionally defines the HAS_MSG_PROXY symbol,
-	which indicates that the MSG_PROXY is available.  #ifdef is
-	not enough because it may be an enum, glibc has been known to do this.
-
-d_msgctl (d_msgctl.U):
-	This variable conditionally defines the HAS_MSGCTL symbol, which
-	indicates to the C program that the msgctl() routine is available.
-
-d_msgget (d_msgget.U):
-	This variable conditionally defines the HAS_MSGGET symbol, which
-	indicates to the C program that the msgget() routine is available.
-
-d_msgrcv (d_msgrcv.U):
-	This variable conditionally defines the HAS_MSGRCV symbol, which
-	indicates to the C program that the msgrcv() routine is available.
-
-d_msgsnd (d_msgsnd.U):
-	This variable conditionally defines the HAS_MSGSND symbol, which
-	indicates to the C program that the msgsnd() routine is available.
-
-d_msync (d_msync.U):
-	This variable conditionally defines HAS_MSYNC if msync() is
-	available to synchronize a mapped file.
-
-d_munmap (d_munmap.U):
-	This variable conditionally defines HAS_MUNMAP if munmap() is
-	available to unmap a region mapped by mmap().
-
-d_mymalloc (mallocsrc.U):
-	This variable conditionally defines MYMALLOC in case other parts
-	of the source want to take special action if MYMALLOC is used.
-	This may include different sorts of profiling or error detection.
-
-d_nice (d_nice.U):
-	This variable conditionally defines the HAS_NICE symbol, which
-	indicates to the C program that the nice() routine is available.
-
-d_nv_preserves_uv (perlxv.U):
-	This variable indicates whether a variable of type nvtype
-	can preserve all the bits a variable of type uvtype.
-
-d_nv_preserves_uv_bits (perlxv.U):
-	This variable indicates how many of bits type uvtype
-	a variable nvtype can preserve.
-
-d_off64_t (d_off64_t.U):
-	This symbol will be defined if the C compiler supports off64_t.
-
-d_old_pthread_create_joinable (d_pthrattrj.U):
-	This variable conditionally defines pthread_create_joinable.
-	undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
-
-d_oldpthreads (usethreads.U):
-	This variable conditionally defines the OLD_PTHREADS_API symbol,
-	and indicates that Perl should be built to use the old
-	draft POSIX threads API.  This is only potentially meaningful if
-	usethreads is set.
-
-d_oldsock (d_socket.U):
-	This variable conditionally defines the OLDSOCKET symbol, which
-	indicates that the BSD socket interface is based on 4.1c and not 4.2.
-
-d_open3 (d_open3.U):
-	This variable conditionally defines the HAS_OPEN3 manifest constant,
-	which indicates to the C program that the 3 argument version of
-	the open(2) function is available.
-
-d_pathconf (d_pathconf.U):
-	This variable conditionally defines the HAS_PATHCONF symbol, which
-	indicates to the C program that the pathconf() routine is available
-	to determine file-system related limits and options associated
-	with a given filename.
-
-d_pause (d_pause.U):
-	This variable conditionally defines the HAS_PAUSE symbol, which
-	indicates to the C program that the pause() routine is available
-	to suspend a process until a signal is received.
-
-d_perl_otherlibdirs (otherlibdirs.U):
-	This variable conditionally defines PERL_OTHERLIBDIRS, which
-	contains a colon-separated set of paths for the perl binary to
-	include in @INC.  See also otherlibdirs.
-
-d_phostname (d_gethname.U):
-	This variable conditionally defines the HAS_PHOSTNAME symbol, which
-	contains the shell command which, when fed to popen(), may be
-	used to derive the host name.
-
-d_pipe (d_pipe.U):
-	This variable conditionally defines the HAS_PIPE symbol, which
-	indicates to the C program that the pipe() routine is available
-	to create an inter-process channel.
-
-d_poll (d_poll.U):
-	This variable conditionally defines the HAS_POLL symbol, which
-	indicates to the C program that the poll() routine is available
-	to poll active file descriptors.
-
-d_portable (d_portable.U):
-	This variable conditionally defines the PORTABLE symbol, which
-	indicates to the C program that it should not assume that it is
-	running on the machine it was compiled on.
-
-d_PRId64 (quadfio.U):
-	This variable conditionally defines the PERL_PRId64 symbol, which
-	indiciates that stdio has a symbol to print 64-bit decimal numbers.
-
-d_PRIeldbl (longdblfio.U):
-	This variable conditionally defines the PERL_PRIfldbl symbol, which
-	indiciates that stdio has a symbol to print long doubles.
-
-d_PRIEUldbl (longdblfio.U):
-	This variable conditionally defines the PERL_PRIfldbl symbol, which
-	indiciates that stdio has a symbol to print long doubles.
-	The 'U' in the name is to separate this from d_PRIeldbl so that even
-	case-blind systems can see the difference.
-
-d_PRIfldbl (longdblfio.U):
-	This variable conditionally defines the PERL_PRIfldbl symbol, which
-	indiciates that stdio has a symbol to print long doubles.
-
-d_PRIFUldbl (longdblfio.U):
-	This variable conditionally defines the PERL_PRIfldbl symbol, which
-	indiciates that stdio has a symbol to print long doubles.
-	The 'U' in the name is to separate this from d_PRIfldbl so that even
-	case-blind systems can see the difference.
-
-d_PRIgldbl (longdblfio.U):
-	This variable conditionally defines the PERL_PRIfldbl symbol, which
-	indiciates that stdio has a symbol to print long doubles.
-
-d_PRIGUldbl (longdblfio.U):
-	This variable conditionally defines the PERL_PRIfldbl symbol, which
-	indiciates that stdio has a symbol to print long doubles.
-	The 'U' in the name is to separate this from d_PRIgldbl so that even
-	case-blind systems can see the difference.
-
-d_PRIi64 (quadfio.U):
-	This variable conditionally defines the PERL_PRIi64 symbol, which
-	indiciates that stdio has a symbol to print 64-bit decimal numbers.
-
-d_PRIo64 (quadfio.U):
-	This variable conditionally defines the PERL_PRIo64 symbol, which
-	indiciates that stdio has a symbol to print 64-bit octal numbers.
-
-d_PRIu64 (quadfio.U):
-	This variable conditionally defines the PERL_PRIu64 symbol, which
-	indiciates that stdio has a symbol to print 64-bit unsigned decimal
-	numbers.
-
-d_PRIx64 (quadfio.U):
-	This variable conditionally defines the PERL_PRIx64 symbol, which
-	indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
-
-d_PRIXU64 (quadfio.U):
-	This variable conditionally defines the PERL_PRIXU64 symbol, which
-	indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
-	The 'U' in the name is to separate this from d_PRIx64 so that even
-	case-blind systems can see the difference.
-
-d_pthread_yield (d_pthread_y.U):
-	This variable conditionally defines the HAS_PTHREAD_YIELD
-	symbol if the pthread_yield routine is available to yield
-	the execution of the current thread.
-
-d_pwage (i_pwd.U):
-	This variable conditionally defines PWAGE, which indicates
-	that struct passwd contains pw_age.
-
-d_pwchange (i_pwd.U):
-	This variable conditionally defines PWCHANGE, which indicates
-	that struct passwd contains pw_change.
-
-d_pwclass (i_pwd.U):
-	This variable conditionally defines PWCLASS, which indicates
-	that struct passwd contains pw_class.
-
-d_pwcomment (i_pwd.U):
-	This variable conditionally defines PWCOMMENT, which indicates
-	that struct passwd contains pw_comment.
-
-d_pwexpire (i_pwd.U):
-	This variable conditionally defines PWEXPIRE, which indicates
-	that struct passwd contains pw_expire.
-
-d_pwgecos (i_pwd.U):
-	This variable conditionally defines PWGECOS, which indicates
-	that struct passwd contains pw_gecos.
-
-d_pwpasswd (i_pwd.U):
-	This variable conditionally defines PWPASSWD, which indicates
-	that struct passwd contains pw_passwd.
-
-d_pwquota (i_pwd.U):
-	This variable conditionally defines PWQUOTA, which indicates
-	that struct passwd contains pw_quota.
-
-d_qgcvt (d_qgcvt.U):
-	This variable conditionally defines the HAS_QGCVT symbol, which
-	indicates to the C program that the qgcvt() routine is available.
-
-d_quad (quadtype.U):
-	This variable, if defined, tells that there's a 64-bit integer type,
-	quadtype.
-
-d_readdir (d_readdir.U):
-	This variable conditionally defines HAS_READDIR if readdir() is
-	available to read directory entries.
-
-d_readlink (d_readlink.U):
-	This variable conditionally defines the HAS_READLINK symbol, which
-	indicates to the C program that the readlink() routine is available
-	to read the value of a symbolic link.
-
-d_rename (d_rename.U):
-	This variable conditionally defines the HAS_RENAME symbol, which
-	indicates to the C program that the rename() routine is available
-	to rename files.
-
-d_rewinddir (d_readdir.U):
-	This variable conditionally defines HAS_REWINDDIR if rewinddir() is
-	available.
-
-d_rmdir (d_rmdir.U):
-	This variable conditionally defines HAS_RMDIR if rmdir() is
-	available to remove directories.
-
-d_safebcpy (d_safebcpy.U):
-	This variable conditionally defines the HAS_SAFE_BCOPY symbol if
-	the bcopy() routine can do overlapping copies.
-
-d_safemcpy (d_safemcpy.U):
-	This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
-	the memcpy() routine can do overlapping copies.
-
-d_sanemcmp (d_sanemcmp.U):
-	This variable conditionally defines the HAS_SANE_MEMCMP symbol if
-	the memcpy() routine is available and can be used to compare relative
-	magnitudes of chars with their high bits set.
-
-d_sbrkproto (d_sbrkproto.U):
-	This variable conditionally defines the HAS_SBRK_PROTO symbol,
-	which indicates to the C program that the system provides
-	a prototype for the sbrk() function.  Otherwise, it is
-	up to the program to supply one.
-
-d_sched_yield (d_pthread_y.U):
-	This variable conditionally defines the HAS_SCHED_YIELD
-	symbol if the sched_yield routine is available to yield
-	the execution of the current thread.
-
-d_scm_rights (d_socket.U):
-	This variable conditionally defines the HAS_SCM_RIGHTS symbol,
-	which indicates that the SCM_RIGHTS is available.  #ifdef is
-	not enough because it may be an enum, glibc has been known to do this.
-
-d_SCNfldbl (longdblfio.U):
-	This variable conditionally defines the PERL_PRIfldbl symbol, which
-	indiciates that stdio has a symbol to scan long doubles.
-
-d_seekdir (d_readdir.U):
-	This variable conditionally defines HAS_SEEKDIR if seekdir() is
-	available.
-
-d_select (d_select.U):
-	This variable conditionally defines HAS_SELECT if select() is
-	available to select active file descriptors. A <sys/time.h>
-	inclusion may be necessary for the timeout field.
-
-d_sem (d_sem.U):
-	This variable conditionally defines the HAS_SEM symbol, which
-	indicates that the entire sem*(2) library is present.
-
-d_semctl (d_semctl.U):
-	This variable conditionally defines the HAS_SEMCTL symbol, which
-	indicates to the C program that the semctl() routine is available.
-
-d_semctl_semid_ds (d_union_semun.U):
-	This variable conditionally defines USE_SEMCTL_SEMID_DS, which
-	indicates that struct semid_ds * is to be used for semctl IPC_STAT.
-
-d_semctl_semun (d_union_semun.U):
-	This variable conditionally defines USE_SEMCTL_SEMUN, which
-	indicates that union semun is to be used for semctl IPC_STAT.
-
-d_semget (d_semget.U):
-	This variable conditionally defines the HAS_SEMGET symbol, which
-	indicates to the C program that the semget() routine is available.
-
-d_semop (d_semop.U):
-	This variable conditionally defines the HAS_SEMOP symbol, which
-	indicates to the C program that the semop() routine is available.
-
-d_setegid (d_setegid.U):
-	This variable conditionally defines the HAS_SETEGID symbol, which
-	indicates to the C program that the setegid() routine is available
-	to change the effective gid of the current program.
-
-d_seteuid (d_seteuid.U):
-	This variable conditionally defines the HAS_SETEUID symbol, which
-	indicates to the C program that the seteuid() routine is available
-	to change the effective uid of the current program.
-
-d_setgrent (d_setgrent.U):
-	This variable conditionally defines the HAS_SETGRENT symbol, which
-	indicates to the C program that the setgrent() routine is available
-	for initializing sequential access to the group database.
-
-d_setgrps (d_setgrps.U):
-	This variable conditionally defines the HAS_SETGROUPS symbol, which
-	indicates to the C program that the setgroups() routine is available
-	to set the list of process groups.
-
-d_sethent (d_sethent.U):
-	This variable conditionally defines HAS_SETHOSTENT if sethostent() is
-	available.
-
-d_setlinebuf (d_setlnbuf.U):
-	This variable conditionally defines the HAS_SETLINEBUF symbol, which
-	indicates to the C program that the setlinebuf() routine is available
-	to change stderr or stdout from block-buffered or unbuffered to a
-	line-buffered mode.
-
-d_setlocale (d_setlocale.U):
-	This variable conditionally defines HAS_SETLOCALE if setlocale() is
-	available to handle locale-specific ctype implementations.
-
-d_setnent (d_setnent.U):
-	This variable conditionally defines HAS_SETNETENT if setnetent() is
-	available.
-
-d_setpent (d_setpent.U):
-	This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
-	available.
-
-d_setpgid (d_setpgid.U):
-	This variable conditionally defines the HAS_SETPGID symbol if the
-	setpgid(pid, gpid) function is available to set process group ID.
-
-d_setpgrp2 (d_setpgrp2.U):
-	This variable conditionally defines the HAS_SETPGRP2 symbol, which
-	indicates to the C program that the setpgrp2() (as in DG/UX) routine
-	is available to set the current process group.
-
-d_setpgrp (d_setpgrp.U):
-	This variable conditionally defines HAS_SETPGRP if setpgrp() is
-	available to set the current process group.
-
-d_setprior (d_setprior.U):
-	This variable conditionally defines HAS_SETPRIORITY if setpriority()
-	is available to set a process's priority.
-
-d_setproctitle (d_setproctitle.U):
-	This variable conditionally defines the HAS_SETPROCTITLE symbol,
-	which indicates to the C program that the setproctitle() routine
-	is available.
-
-d_setpwent (d_setpwent.U):
-	This variable conditionally defines the HAS_SETPWENT symbol, which
-	indicates to the C program that the setpwent() routine is available
-	for initializing sequential access to the passwd database.
-
-d_setregid (d_setregid.U):
-	This variable conditionally defines HAS_SETREGID if setregid() is
-	available to change the real and effective gid of the current
-	process.
-
-d_setresgid (d_setregid.U):
-	This variable conditionally defines HAS_SETRESGID if setresgid() is
-	available to change the real, effective and saved gid of the current
-	process.
-
-d_setresuid (d_setreuid.U):
-	This variable conditionally defines HAS_SETREUID if setresuid() is
-	available to change the real, effective and saved uid of the current
-	process.
-
-d_setreuid (d_setreuid.U):
-	This variable conditionally defines HAS_SETREUID if setreuid() is
-	available to change the real and effective uid of the current
-	process.
-
-d_setrgid (d_setrgid.U):
-	This variable conditionally defines the HAS_SETRGID symbol, which
-	indicates to the C program that the setrgid() routine is available
-	to change the real gid of the current program.
-
-d_setruid (d_setruid.U):
-	This variable conditionally defines the HAS_SETRUID symbol, which
-	indicates to the C program that the setruid() routine is available
-	to change the real uid of the current program.
-
-d_setsent (d_setsent.U):
-	This variable conditionally defines HAS_SETSERVENT if setservent() is
-	available.
-
-d_setsid (d_setsid.U):
-	This variable conditionally defines HAS_SETSID if setsid() is
-	available to set the process group ID.
-
-d_setvbuf (d_setvbuf.U):
-	This variable conditionally defines the HAS_SETVBUF symbol, which
-	indicates to the C program that the setvbuf() routine is available
-	to change buffering on an open stdio stream.
-
-d_sfio (d_sfio.U):
-	This variable conditionally defines the USE_SFIO symbol,
-	and indicates whether sfio is available (and should be used).
-
-d_shm (d_shm.U):
-	This variable conditionally defines the HAS_SHM symbol, which
-	indicates that the entire shm*(2) library is present.
-
-d_shmat (d_shmat.U):
-	This variable conditionally defines the HAS_SHMAT symbol, which
-	indicates to the C program that the shmat() routine is available.
-
-d_shmatprototype (d_shmat.U):
-	This variable conditionally defines the HAS_SHMAT_PROTOTYPE 
-	symbol, which indicates that sys/shm.h has a prototype for
-	shmat.
-
-d_shmctl (d_shmctl.U):
-	This variable conditionally defines the HAS_SHMCTL symbol, which
-	indicates to the C program that the shmctl() routine is available.
-
-d_shmdt (d_shmdt.U):
-	This variable conditionally defines the HAS_SHMDT symbol, which
-	indicates to the C program that the shmdt() routine is available.
-
-d_shmget (d_shmget.U):
-	This variable conditionally defines the HAS_SHMGET symbol, which
-	indicates to the C program that the shmget() routine is available.
-
-d_sigaction (d_sigaction.U):
-	This variable conditionally defines the HAS_SIGACTION symbol, which
-	indicates that the Vr4 sigaction() routine is available.
-
-d_sigprocmask (d_sigprocmask.U):
-	This variable conditionally defines HAS_SIGPROCMASK
-	if sigprocmask() is available to examine or change the signal mask
-	of the calling process.
-
-d_sigsetjmp (d_sigsetjmp.U):
-	This variable conditionally defines the HAS_SIGSETJMP symbol,
-	which indicates that the sigsetjmp() routine is available to
-	call setjmp() and optionally save the process's signal mask.
-
-d_socket (d_socket.U):
-	This variable conditionally defines HAS_SOCKET, which indicates
-	that the BSD socket interface is supported.
-
-d_socklen_t (d_socklen_t.U):
-	This symbol will be defined if the C compiler supports socklen_t.
-
-d_sockpair (d_socket.U):
-	This variable conditionally defines the HAS_SOCKETPAIR symbol, which
-	indicates that the BSD socketpair() is supported.
-
-d_socks5_init (d_socks5_init.U):
-	This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
-	indicates to the C program that the socks5_init() routine is available.
-
-d_sqrtl (d_sqrtl.U):
-	This variable conditionally defines the HAS_SQRTL symbol, which
-	indicates to the C program that the sqrtl() routine is available.
-
-d_statblks (d_statblks.U):
-	This variable conditionally defines USE_STAT_BLOCKS
-	if this system has a stat structure declaring
-	st_blksize and st_blocks.
-
-d_statfs_f_flags (d_statfs_f_flags.U):
-	This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
-	symbol, which indicates to struct statfs from has f_flags member.
-	This kind of struct statfs is coming from sys/mount.h (BSD),
-	not from sys/statfs.h (SYSV).
-
-d_statfs_s (d_statfs_s.U):
-	This variable conditionally defines the HAS_STRUCT_STATFS symbol,
-	which indicates that the struct statfs is supported.
-
-d_statvfs (d_statvfs.U):
-	This variable conditionally defines the HAS_STATVFS symbol, which
-	indicates to the C program that the statvfs() routine is available.
-
-d_stdio_cnt_lval (d_stdstdio.U):
-	This variable conditionally defines STDIO_CNT_LVALUE if the
-	FILE_cnt macro can be used as an lvalue.
-
-d_stdio_ptr_lval (d_stdstdio.U):
-	This variable conditionally defines STDIO_PTR_LVALUE if the
-	FILE_ptr macro can be used as an lvalue.
-
-d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
-	This symbol is defined if using the FILE_ptr macro as an lvalue
-	to increase the pointer by n leaves File_cnt(fp) unchanged.
-
-d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
-	This symbol is defined if using the FILE_ptr macro as an lvalue
-	to increase the pointer by n has the side effect of decreasing the
-	value of File_cnt(fp) by n.
-
-d_stdio_stream_array (stdio_streams.U):
-	This variable tells whether there is an array holding
-	the stdio streams.
-
-d_stdiobase (d_stdstdio.U):
-	This variable conditionally defines USE_STDIO_BASE if this system
-	has a FILE structure declaring a usable _base field (or equivalent)
-	in stdio.h.
-
-d_stdstdio (d_stdstdio.U):
-	This variable conditionally defines USE_STDIO_PTR if this system
-	has a FILE structure declaring usable _ptr and _cnt fields (or
-	equivalent) in stdio.h.
-
-d_strchr (d_strchr.U):
-	This variable conditionally defines HAS_STRCHR if strchr() and
-	strrchr() are available for string searching.
-
-d_strcoll (d_strcoll.U):
-	This variable conditionally defines HAS_STRCOLL if strcoll() is
-	available to compare strings using collating information.
-
-d_strctcpy (d_strctcpy.U):
-	This variable conditionally defines the USE_STRUCT_COPY symbol, which
-	indicates to the C program that this C compiler knows how to copy
-	structures.
-
-d_strerrm (d_strerror.U):
-	This variable holds what Strerrr is defined as to translate an error
-	code condition into an error message string. It could be 'strerror'
-	or a more complex macro emulating strrror with sys_errlist[], or the
-	"unknown" string when both strerror and sys_errlist are missing.
-
-d_strerror (d_strerror.U):
-	This variable conditionally defines HAS_STRERROR if strerror() is
-	available to translate error numbers to strings.
-
-d_strtod (d_strtod.U):
-	This variable conditionally defines the HAS_STRTOD symbol, which
-	indicates to the C program that the strtod() routine is available
-	to provide better numeric string conversion than atof().
-
-d_strtol (d_strtol.U):
-	This variable conditionally defines the HAS_STRTOL symbol, which
-	indicates to the C program that the strtol() routine is available
-	to provide better numeric string conversion than atoi() and friends.
-
-d_strtold (d_strtold.U):
-	This variable conditionally defines the HAS_STRTOLD symbol, which
-	indicates to the C program that the strtold() routine is available.
-
-d_strtoll (d_strtoll.U):
-	This variable conditionally defines the HAS_STRTOLL symbol, which
-	indicates to the C program that the strtoll() routine is available.
-
-d_strtoq (d_strtoq.U):
-	This variable conditionally defines the HAS_STRTOQ symbol, which
-	indicates to the C program that the strtoq() routine is available.
-
-d_strtoul (d_strtoul.U):
-	This variable conditionally defines the HAS_STRTOUL symbol, which
-	indicates to the C program that the strtoul() routine is available
-	to provide conversion of strings to unsigned long.
-
-d_strtoull (d_strtoull.U):
-	This variable conditionally defines the HAS_STRTOULL symbol, which
-	indicates to the C program that the strtoull() routine is available.
-
-d_strtouq (d_strtouq.U):
-	This variable conditionally defines the HAS_STRTOUQ symbol, which
-	indicates to the C program that the strtouq() routine is available.
-
-d_strxfrm (d_strxfrm.U):
-	This variable conditionally defines HAS_STRXFRM if strxfrm() is
-	available to transform strings.
-
-d_suidsafe (d_dosuid.U):
-	This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
-	if setuid scripts can be secure.  This test looks in /dev/fd/.
-
-d_symlink (d_symlink.U):
-	This variable conditionally defines the HAS_SYMLINK symbol, which
-	indicates to the C program that the symlink() routine is available
-	to create symbolic links.
-
-d_syscall (d_syscall.U):
-	This variable conditionally defines HAS_SYSCALL if syscall() is
-	available call arbitrary system calls.
-
-d_sysconf (d_sysconf.U):
-	This variable conditionally defines the HAS_SYSCONF symbol, which
-	indicates to the C program that the sysconf() routine is available
-	to determine system related limits and options.
-
-d_sysernlst (d_strerror.U):
-	This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
-	is available to translate error numbers to the symbolic name.
-
-d_syserrlst (d_strerror.U):
-	This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
-	available to translate error numbers to strings.
-
-d_system (d_system.U):
-	This variable conditionally defines HAS_SYSTEM if system() is
-	available to issue a shell command.
-
-d_tcgetpgrp (d_tcgtpgrp.U):
-	This variable conditionally defines the HAS_TCGETPGRP symbol, which
-	indicates to the C program that the tcgetpgrp() routine is available.
-	to get foreground process group ID.
-
-d_tcsetpgrp (d_tcstpgrp.U):
-	This variable conditionally defines the HAS_TCSETPGRP symbol, which
-	indicates to the C program that the tcsetpgrp() routine is available
-	to set foreground process group ID.
-
-d_telldir (d_readdir.U):
-	This variable conditionally defines HAS_TELLDIR if telldir() is
-	available.
-
-d_telldirproto (d_telldirproto.U):
-	This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
-	which indicates to the C program that the system provides
-	a prototype for the telldir() function.  Otherwise, it is
-	up to the program to supply one.
-
-d_time (d_time.U):
-	This variable conditionally defines the HAS_TIME symbol, which indicates
-	that the time() routine exists.  The time() routine is normaly
-	provided on UNIX systems.
-
-d_times (d_times.U):
-	This variable conditionally defines the HAS_TIMES symbol, which indicates
-	that the times() routine exists.  The times() routine is normaly
-	provided on UNIX systems. You may have to include <sys/times.h>.
-
-d_truncate (d_truncate.U):
-	This variable conditionally defines HAS_TRUNCATE if truncate() is
-	available to truncate files.
-
-d_tzname (d_tzname.U):
-	This variable conditionally defines HAS_TZNAME if tzname[] is
-	available to access timezone names.
-
-d_umask (d_umask.U):
-	This variable conditionally defines the HAS_UMASK symbol, which
-	indicates to the C program that the umask() routine is available.
-	to set and get the value of the file creation mask.
-
-d_uname (d_gethname.U):
-	This variable conditionally defines the HAS_UNAME symbol, which
-	indicates to the C program that the uname() routine may be
-	used to derive the host name.
-
-d_union_semun (d_union_semun.U):
-	This variable conditionally defines HAS_UNION_SEMUN if the
-	union semun is defined by including <sys/sem.h>.
-
-d_ustat (d_ustat.U):
-	This variable conditionally defines HAS_USTAT if ustat() is
-	available to query file system statistics by dev_t.
-
-d_vendorarch (vendorarch.U):
-	This variable conditionally defined PERL_VENDORARCH.
-
-d_vendorbin (vendorbin.U):
-	This variable conditionally defines PERL_VENDORBIN.
-
-d_vendorlib (vendorlib.U):
-	This variable conditionally defines PERL_VENDORLIB.
-
-d_vfork (d_vfork.U):
-	This variable conditionally defines the HAS_VFORK symbol, which
-	indicates the vfork() routine is available.
-
-d_void_closedir (d_closedir.U):
-	This variable conditionally defines VOID_CLOSEDIR if closedir()
-	does not return a value.
-
-d_voidsig (d_voidsig.U):
-	This variable conditionally defines VOIDSIG if this system
-	declares "void (*signal(...))()" in signal.h.  The old way was to
-	declare it as "int (*signal(...))()".
-
-d_voidtty (i_sysioctl.U):
-	This variable conditionally defines USE_IOCNOTTY to indicate that the
-	ioctl() call with TIOCNOTTY should be used to void tty association.
-	Otherwise (on USG probably), it is enough to close the standard file
-	decriptors and do a setpgrp().
-
-d_volatile (d_volatile.U):
-	This variable conditionally defines the HASVOLATILE symbol, which
-	indicates to the C program that this C compiler knows about the
-	volatile declaration.
-
-d_vprintf (d_vprintf.U):
-	This variable conditionally defines the HAS_VPRINTF symbol, which
-	indicates to the C program that the vprintf() routine is available
-	to printf with a pointer to an argument list.
-
-d_wait4 (d_wait4.U):
-	This variable conditionally defines the HAS_WAIT4 symbol, which
-	indicates the wait4() routine is available.
-
-d_waitpid (d_waitpid.U):
-	This variable conditionally defines HAS_WAITPID if waitpid() is
-	available to wait for child process.
-
-d_wcstombs (d_wcstombs.U):
-	This variable conditionally defines the HAS_WCSTOMBS symbol, which
-	indicates to the C program that the wcstombs() routine is available
-	to convert wide character strings to multibyte strings.
-
-d_wctomb (d_wctomb.U):
-	This variable conditionally defines the HAS_WCTOMB symbol, which
-	indicates to the C program that the wctomb() routine is available
-	to convert a wide character to a multibyte.
-
-d_xenix (Guess.U):
-	This variable conditionally defines the symbol XENIX, which alerts
-	the C program that it runs under Xenix.
-
-date (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the date program.  After Configure runs,
-	the value is reset to a plain "date" and is not useful.
-
-db_hashtype (i_db.U):
-	This variable contains the type of the hash structure element
-	in the <db.h> header file.  In older versions of DB, it was
-	int, while in newer ones it is u_int32_t.
-
-db_prefixtype (i_db.U):
-	This variable contains the type of the prefix structure element
-	in the <db.h> header file.  In older versions of DB, it was
-	int, while in newer ones it is size_t.
-
-defvoidused (voidflags.U):
-	This variable contains the default value of the VOIDUSED symbol (15).
-
-direntrytype (i_dirent.U):
-	This symbol is set to 'struct direct' or 'struct dirent' depending on
-	whether dirent is available or not. You should use this pseudo type to
-	portably declare your directory entries.
-
-dlext (dlext.U):
-	This variable contains the extension that is to be used for the
-	dynamically loaded modules that perl generaties.
-
-dlsrc (dlsrc.U):
-	This variable contains the name of the dynamic loading file that
-	will be used with the package.
-
-doublesize (doublesize.U):
-	This variable contains the value of the DOUBLESIZE symbol, which
-	indicates to the C program how many bytes there are in a double.
-
-drand01 (randfunc.U):
-	Indicates the macro to be used to generate normalized
-	random numbers.  Uses randfunc, often divided by
-	(double) (((unsigned long) 1 << randbits)) in order to
-	normalize the result.
-	In C programs, the macro 'Drand01' is mapped to drand01.
-
-dynamic_ext (Extensions.U):
-	This variable holds a list of XS extension files we want to
-	link dynamically into the package.  It is used by Makefile.
-
-eagain (nblock_io.U):
-	This variable bears the symbolic errno code set by read() when no
-	data is present on the file and non-blocking I/O was enabled (otherwise,
-	read() blocks naturally).
-
-ebcdic (ebcdic.U):
-	This variable conditionally defines EBCDIC if this
-	system uses EBCDIC encoding.  Among other things, this
-	means that the character ranges are not contiguous.
-	See trnl.U
-
-echo (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the echo program.  After Configure runs,
-	the value is reset to a plain "echo" and is not useful.
-
-egrep (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the egrep program.  After Configure runs,
-	the value is reset to a plain "egrep" and is not useful.
-
-emacs (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-eunicefix (Init.U):
-	When running under Eunice this variable contains a command which will
-	convert a shell script to the proper form of text file for it to be
-	executable by the shell.  On other systems it is a no-op.
-
-exe_ext (Unix.U):
-	This is an old synonym for _exe.
-
-expr (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the expr program.  After Configure runs,
-	the value is reset to a plain "expr" and is not useful.
-
-extensions (Extensions.U):
-	This variable holds a list of all extension files (both XS and
-	non-xs linked into the package.  It is propagated to Config.pm
-	and is typically used to test whether a particular extesion 
-	is available.
-
-fflushall (fflushall.U):
-	This symbol, if defined, tells that to flush
-	all pending stdio output one must loop through all
-	the stdio file handles stored in an array and fflush them.
-	Note that if fflushNULL is defined, fflushall will not
-	even be probed for and will be left undefined.
-
-fflushNULL (fflushall.U):
-	This symbol, if defined, tells that fflush(NULL) does flush
-	all pending stdio output.
-
-find (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-firstmakefile (Unix.U):
-	This variable defines the first file searched by make.  On unix,
-	it is makefile (then Makefile).  On case-insensitive systems,
-	it might be something else.  This is only used to deal with
-	convoluted make depend tricks.
-
-flex (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-fpossize (fpossize.U):
-	This variable contains the size of a fpostype in bytes.
-
-fpostype (fpostype.U):
-	This variable defines Fpos_t to be something like fpos_t, long, 
-	uint, or whatever type is used to declare file positions in libc.
-
-freetype (mallocsrc.U):
-	This variable contains the return type of free().  It is usually
-	void, but occasionally int.
-
-full_ar (Loc_ar.U):
-	This variable contains the full pathname to 'ar', whether or
-	not the user has specified 'portability'.  This is only used
-	in the Makefile.SH.
-
-full_csh (d_csh.U):
-	This variable contains the full pathname to 'csh', whether or
-	not the user has specified 'portability'.  This is only used
-	in the compiled C program, and we assume that all systems which
-	can share this executable will have the same full pathname to
-	'csh.'
-
-full_sed (Loc_sed.U):
-	This variable contains the full pathname to 'sed', whether or
-	not the user has specified 'portability'.  This is only used
-	in the compiled C program, and we assume that all systems which
-	can share this executable will have the same full pathname to
-	'sed.'
-
-gccosandvers (gccvers.U):
-	If GNU cc (gcc) is used, this variable the operating system and
-	version used to compile the gcc.  It is set to '' if not gcc,
-	or if nothing useful can be parsed as the os version.
-
-gccversion (gccvers.U):
-	If GNU cc (gcc) is used, this variable holds '1' or '2' to 
-	indicate whether the compiler is version 1 or 2.  This is used in
-	setting some of the default cflags.  It is set to '' if not gcc.
-
-gidformat (gidf.U):
-	This variable contains the format string used for printing a Gid_t.
-
-gidsign (gidsign.U):
-	This variable contains the signedness of a gidtype.
-	1 for unsigned, -1 for signed.
-
-gidsize (gidsize.U):
-	This variable contains the size of a gidtype in bytes.
-
-gidtype (gidtype.U):
-	This variable defines Gid_t to be something like gid_t, int,
-	ushort, or whatever type is used to declare the return type
-	of getgid().  Typically, it is the type of group ids in the kernel.
-
-glibpth (libpth.U):
-	This variable holds the general path (space-separated) used to
-	find libraries.  It may contain directories that do not exist on
-	this platform, libpth is the cleaned-up version.
-
-grep (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the grep program.  After Configure runs,
-	the value is reset to a plain "grep" and is not useful.
-
-groupcat (nis.U):
-	This variable contains a command that produces the text of the
-	/etc/group file.  This is normally "cat /etc/group", but can be
-	"ypcat group" when NIS is used.
-	On some systems, such as os390, there may be no equivalent
-	command, in which case this variable is unset.
-
-groupstype (groupstype.U):
-	This variable defines Groups_t to be something like gid_t, int, 
-	ushort, or whatever type is used for the second argument to
-	getgroups() and setgroups().  Usually, this is the same as
-	gidtype (gid_t), but sometimes it isn't.
-
-gzip (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the gzip program.  After Configure runs,
-	the value is reset to a plain "gzip" and is not useful.
-
-h_fcntl (h_fcntl.U):
-	This is variable gets set in various places to tell i_fcntl that
-	<fcntl.h> should be included.
-
-h_sysfile (h_sysfile.U):
-	This is variable gets set in various places to tell i_sys_file that
-	<sys/file.h> should be included.
-
-hint (Oldconfig.U):
-	Gives the type of hints used for previous answers. May be one of
-	"default", "recommended" or "previous".
-
-hostcat (nis.U):
-	This variable contains a command that produces the text of the
-	/etc/hosts file.  This is normally "cat /etc/hosts", but can be
-	"ypcat hosts" when NIS is used.
-	On some systems, such as os390, there may be no equivalent
-	command, in which case this variable is unset.
-
-i16size (perlxv.U):
-	This variable is the size of an I16 in bytes.
-
-i16type (perlxv.U):
-	This variable contains the C type used for Perl's I16.
-
-i32size (perlxv.U):
-	This variable is the size of an I32 in bytes.
-
-i32type (perlxv.U):
-	This variable contains the C type used for Perl's I32.
-
-i64size (perlxv.U):
-	This variable is the size of an I64 in bytes.
-
-i64type (perlxv.U):
-	This variable contains the C type used for Perl's I64.
-
-i8size (perlxv.U):
-	This variable is the size of an I8 in bytes.
-
-i8type (perlxv.U):
-	This variable contains the C type used for Perl's I8.
-
-i_arpainet (i_arpainet.U):
-	This variable conditionally defines the I_ARPA_INET symbol,
-	and indicates whether a C program should include <arpa/inet.h>.
-
-i_bsdioctl (i_sysioctl.U):
-	This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
-	indicates to the C program that <sys/bsdioctl.h> exists and should
-	be included.
-
-i_db (i_db.U):
-	This variable conditionally defines the I_DB symbol, and indicates
-	whether a C program may include Berkeley's DB include file <db.h>.
-
-i_dbm (i_dbm.U):
-	This variable conditionally defines the I_DBM symbol, which
-	indicates to the C program that <dbm.h> exists and should
-	be included.
-
-i_dirent (i_dirent.U):
-	This variable conditionally defines I_DIRENT, which indicates
-	to the C program that it should include <dirent.h>.
-
-i_dld (i_dld.U):
-	This variable conditionally defines the I_DLD symbol, which
-	indicates to the C program that <dld.h> (GNU dynamic loading)
-	exists and should be included.
-
-i_dlfcn (i_dlfcn.U):
-	This variable conditionally defines the I_DLFCN symbol, which
-	indicates to the C program that <dlfcn.h> exists and should
-	be included.
-
-i_fcntl (i_fcntl.U):
-	This variable controls the value of I_FCNTL (which tells
-	the C program to include <fcntl.h>).
-
-i_float (i_float.U):
-	This variable conditionally defines the I_FLOAT symbol, and indicates
-	whether a C program may include <float.h> to get symbols like DBL_MAX
-	or DBL_MIN, i.e. machine dependent floating point values.
-
-i_gdbm (i_gdbm.U):
-	This variable conditionally defines the I_GDBM symbol, which
-	indicates to the C program that <gdbm.h> exists and should
-	be included.
-
-i_grp (i_grp.U):
-	This variable conditionally defines the I_GRP symbol, and indicates
-	whether a C program should include <grp.h>.
-
-i_iconv (i_iconv.U):
-	This variable conditionally defines the I_ICONV symbol, and indicates
-	whether a C program should include <iconv.h>.
-
-i_ieeefp (i_ieeefp.U):
-	This variable conditionally defines the I_IEEEFP symbol, and indicates
-	whether a C program should include <ieeefp.h>.
-
-i_inttypes (i_inttypes.U):
-	This variable conditionally defines the I_INTTYPES symbol,
-	and indicates whether a C program should include <inttypes.h>.
-
-i_libutil (i_libutil.U):
-	This variable conditionally defines the I_LIBUTIL symbol, and indicates
-	whether a C program should include <libutil.h>.
-
-i_limits (i_limits.U):
-	This variable conditionally defines the I_LIMITS symbol, and indicates
-	whether a C program may include <limits.h> to get symbols like WORD_BIT
-	and friends.
-
-i_locale (i_locale.U):
-	This variable conditionally defines the I_LOCALE symbol,
-	and indicates whether a C program should include <locale.h>.
-
-i_machcthr (i_machcthr.U):
-	This variable conditionally defines the I_MACH_CTHREADS symbol,
-	and indicates whether a C program should include <mach/cthreads.h>.
-
-i_malloc (i_malloc.U):
-	This variable conditionally defines the I_MALLOC symbol, and indicates
-	whether a C program should include <malloc.h>.
-
-i_math (i_math.U):
-	This variable conditionally defines the I_MATH symbol, and indicates
-	whether a C program may include <math.h>.
-
-i_memory (i_memory.U):
-	This variable conditionally defines the I_MEMORY symbol, and indicates
-	whether a C program should include <memory.h>.
-
-i_mntent (i_mntent.U):
-	This variable conditionally defines the I_MNTENT symbol, and indicates
-	whether a C program should include <mntent.h>.
-
-i_ndbm (i_ndbm.U):
-	This variable conditionally defines the I_NDBM symbol, which
-	indicates to the C program that <ndbm.h> exists and should
-	be included.
-
-i_netdb (i_netdb.U):
-	This variable conditionally defines the I_NETDB symbol, and indicates
-	whether a C program should include <netdb.h>.
-
-i_neterrno (i_neterrno.U):
-	This variable conditionally defines the I_NET_ERRNO symbol, which
-	indicates to the C program that <net/errno.h> exists and should
-	be included.
-
-i_netinettcp (i_netinettcp.U):
-	This variable conditionally defines the I_NETINET_TCP symbol,
-	and indicates whether a C program should include <netinet/tcp.h>.
-
-i_niin (i_niin.U):
-	This variable conditionally defines I_NETINET_IN, which indicates
-	to the C program that it should include <netinet/in.h>. Otherwise,
-	you may try <sys/in.h>.
-
-i_poll (i_poll.U):
-	This variable conditionally defines the I_POLL symbol, and indicates
-	whether a C program should include <poll.h>.
-
-i_prot (i_prot.U):
-	This variable conditionally defines the I_PROT symbol, and indicates
-	whether a C program should include <prot.h>.
-
-i_pthread (i_pthread.U):
-	This variable conditionally defines the I_PTHREAD symbol,
-	and indicates whether a C program should include <pthread.h>.
-
-i_pwd (i_pwd.U):
-	This variable conditionally defines I_PWD, which indicates
-	to the C program that it should include <pwd.h>.
-
-i_rpcsvcdbm (i_dbm.U):
-	This variable conditionally defines the I_RPCSVC_DBM symbol, which
-	indicates to the C program that <rpcsvc/dbm.h> exists and should
-	be included.  Some System V systems might need this instead of <dbm.h>.
-
-i_sfio (i_sfio.U):
-	This variable conditionally defines the I_SFIO symbol,
-	and indicates whether a C program should include <sfio.h>.
-
-i_sgtty (i_termio.U):
-	This variable conditionally defines the I_SGTTY symbol, which
-	indicates to the C program that it should include <sgtty.h> rather
-	than <termio.h>.
-
-i_shadow (i_shadow.U):
-	This variable conditionally defines the I_SHADOW symbol, and indicates
-	whether a C program should include <shadow.h>.
-
-i_socks (i_socks.U):
-	This variable conditionally defines the I_SOCKS symbol, and indicates
-	whether a C program should include <socks.h>.
-
-i_stdarg (i_varhdr.U):
-	This variable conditionally defines the I_STDARG symbol, which
-	indicates to the C program that <stdarg.h> exists and should
-	be included.
-
-i_stddef (i_stddef.U):
-	This variable conditionally defines the I_STDDEF symbol, which
-	indicates to the C program that <stddef.h> exists and should
-	be included.
-
-i_stdlib (i_stdlib.U):
-	This variable conditionally defines the I_STDLIB symbol, which
-	indicates to the C program that <stdlib.h> exists and should
-	be included.
-
-i_string (i_string.U):
-	This variable conditionally defines the I_STRING symbol, which
-	indicates that <string.h> should be included rather than <strings.h>.
-
-i_sunmath (i_sunmath.U):
-	This variable conditionally defines the I_SUNMATH symbol, and indicates
-	whether a C program should include <sunmath.h>.
-
-i_sysaccess (i_sysaccess.U):
-	This variable conditionally defines the I_SYS_ACCESS symbol,
-	and indicates whether a C program should include <sys/access.h>.
-
-i_sysdir (i_sysdir.U):
-	This variable conditionally defines the I_SYS_DIR symbol, and indicates
-	whether a C program should include <sys/dir.h>.
-
-i_sysfile (i_sysfile.U):
-	This variable conditionally defines the I_SYS_FILE symbol, and indicates
-	whether a C program should include <sys/file.h> to get R_OK and friends.
-
-i_sysfilio (i_sysioctl.U):
-	This variable conditionally defines the I_SYS_FILIO symbol, which
-	indicates to the C program that <sys/filio.h> exists and should
-	be included in preference to <sys/ioctl.h>.
-
-i_sysin (i_niin.U):
-	This variable conditionally defines I_SYS_IN, which indicates
-	to the C program that it should include <sys/in.h> instead of
-	<netinet/in.h>.
-
-i_sysioctl (i_sysioctl.U):
-	This variable conditionally defines the I_SYS_IOCTL symbol, which
-	indicates to the C program that <sys/ioctl.h> exists and should
-	be included.
-
-i_syslog (i_syslog.U):
-	This variable conditionally defines the I_SYSLOG symbol,
-	and indicates whether a C program should include <syslog.h>.
-
-i_sysmman (i_sysmman.U):
-	This variable conditionally defines the I_SYS_MMAN symbol, and
-	indicates whether a C program should include <sys/mman.h>.
-
-i_sysmode (i_sysmode.U):
-	This variable conditionally defines the I_SYSMODE symbol,
-	and indicates whether a C program should include <sys/mode.h>.
-
-i_sysmount (i_sysmount.U):
-	This variable conditionally defines the I_SYSMOUNT symbol,
-	and indicates whether a C program should include <sys/mount.h>.
-
-i_sysndir (i_sysndir.U):
-	This variable conditionally defines the I_SYS_NDIR symbol, and indicates
-	whether a C program should include <sys/ndir.h>.
-
-i_sysparam (i_sysparam.U):
-	This variable conditionally defines the I_SYS_PARAM symbol, and indicates
-	whether a C program should include <sys/param.h>.
-
-i_sysresrc (i_sysresrc.U):
-	This variable conditionally defines the I_SYS_RESOURCE symbol,
-	and indicates whether a C program should include <sys/resource.h>.
-
-i_syssecrt (i_syssecrt.U):
-	This variable conditionally defines the I_SYS_SECURITY symbol,
-	and indicates whether a C program should include <sys/security.h>.
-
-i_sysselct (i_sysselct.U):
-	This variable conditionally defines I_SYS_SELECT, which indicates
-	to the C program that it should include <sys/select.h> in order to
-	get the definition of struct timeval.
-
-i_syssockio (i_sysioctl.U):
-	This variable conditionally defines I_SYS_SOCKIO to indicate to the
-	C program that socket ioctl codes may be found in <sys/sockio.h>
-	instead of <sys/ioctl.h>.
-
-i_sysstat (i_sysstat.U):
-	This variable conditionally defines the I_SYS_STAT symbol,
-	and indicates whether a C program should include <sys/stat.h>.
-
-i_sysstatfs (i_sysstatfs.U):
-	This variable conditionally defines the I_SYSSTATFS symbol,
-	and indicates whether a C program should include <sys/statfs.h>.
-
-i_sysstatvfs (i_sysstatvfs.U):
-	This variable conditionally defines the I_SYSSTATVFS symbol,
-	and indicates whether a C program should include <sys/statvfs.h>.
-
-i_systime (i_time.U):
-	This variable conditionally defines I_SYS_TIME, which indicates
-	to the C program that it should include <sys/time.h>.
-
-i_systimek (i_time.U):
-	This variable conditionally defines I_SYS_TIME_KERNEL, which
-	indicates to the C program that it should include <sys/time.h>
-	with KERNEL defined.
-
-i_systimes (i_systimes.U):
-	This variable conditionally defines the I_SYS_TIMES symbol, and indicates
-	whether a C program should include <sys/times.h>.
-
-i_systypes (i_systypes.U):
-	This variable conditionally defines the I_SYS_TYPES symbol,
-	and indicates whether a C program should include <sys/types.h>.
-
-i_sysuio (i_sysuio.U):
-	This variable conditionally defines the I_SYSUIO symbol, and indicates
-	whether a C program should include <sys/uio.h>.
-
-i_sysun (i_sysun.U):
-	This variable conditionally defines I_SYS_UN, which indicates
-	to the C program that it should include <sys/un.h> to get UNIX
-	domain socket definitions.
-
-i_sysutsname (i_sysutsname.U):
-	This variable conditionally defines the I_SYSUTSNAME symbol,
-	and indicates whether a C program should include <sys/utsname.h>.
-
-i_sysvfs (i_sysvfs.U):
-	This variable conditionally defines the I_SYSVFS symbol,
-	and indicates whether a C program should include <sys/vfs.h>.
-
-i_syswait (i_syswait.U):
-	This variable conditionally defines I_SYS_WAIT, which indicates
-	to the C program that it should include <sys/wait.h>.
-
-i_termio (i_termio.U):
-	This variable conditionally defines the I_TERMIO symbol, which
-	indicates to the C program that it should include <termio.h> rather
-	than <sgtty.h>.
-
-i_termios (i_termio.U):
-	This variable conditionally defines the I_TERMIOS symbol, which
-	indicates to the C program that the POSIX <termios.h> file is
-	to be included.
-
-i_time (i_time.U):
-	This variable conditionally defines I_TIME, which indicates
-	to the C program that it should include <time.h>.
-
-i_unistd (i_unistd.U):
-	This variable conditionally defines the I_UNISTD symbol, and indicates
-	whether a C program should include <unistd.h>.
-
-i_ustat (i_ustat.U):
-	This variable conditionally defines the I_USTAT symbol, and indicates
-	whether a C program should include <ustat.h>.
-
-i_utime (i_utime.U):
-	This variable conditionally defines the I_UTIME symbol, and indicates
-	whether a C program should include <utime.h>.
-
-i_values (i_values.U):
-	This variable conditionally defines the I_VALUES symbol, and indicates
-	whether a C program may include <values.h> to get symbols like MAXLONG
-	and friends.
-
-i_varargs (i_varhdr.U):
-	This variable conditionally defines I_VARARGS, which indicates
-	to the C program that it should include <varargs.h>.
-
-i_varhdr (i_varhdr.U):
-	Contains the name of the header to be included to get va_dcl definition.
-	Typically one of varargs.h or stdarg.h.
-
-i_vfork (i_vfork.U):
-	This variable conditionally defines the I_VFORK symbol, and indicates
-	whether a C program should include vfork.h.
-
-ignore_versioned_solibs (libs.U):
-	This variable should be non-empty if non-versioned shared
-	libraries (libfoo.so.x.y) are to be ignored (because they
-	cannot be linked against).
-
-inc_version_list (inc_version_list.U):
-	This variable specifies the list of subdirectories in over
-	which perl.c:incpush() and lib/lib.pm will automatically
-	search when adding directories to @INC.  The elements in
-	the list are separated by spaces.  This is only useful
-	if you have a perl library directory tree structured like the
-	default one.  See INSTALL for how this works.  The versioned
-	site_perl directory was introduced in 5.005, so that is the
-	lowest possible value.
-
-inc_version_list_init (inc_version_list.U):
-	This variable holds the same list as inc_version_list, but
-	each item is enclosed in double quotes and separated by commas, 
-	suitable for use in the PERL_INC_VERSION_LIST initialization.
-
-incpath (usrinc.U):
-	This variable must preceed the normal include path to get hte
-	right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
-	Value can be "" or "/bsd43" on mips.
-
-inews (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-installarchlib (archlib.U):
-	This variable is really the same as archlibexp but may differ on
-	those systems using AFS. For extra portability, only this variable
-	should be used in makefiles.
-
-installbin (bin.U):
-	This variable is the same as binexp unless AFS is running in which case
-	the user is explicitely prompted for it. This variable should always
-	be used in your makefiles for maximum portability.
-
-installman1dir (man1dir.U):
-	This variable is really the same as man1direxp, unless you are using
-	AFS in which case it points to the read/write location whereas
-	man1direxp only points to the read-only access location. For extra
-	portability, you should only use this variable within your makefiles.
-
-installman3dir (man3dir.U):
-	This variable is really the same as man3direxp, unless you are using
-	AFS in which case it points to the read/write location whereas
-	man3direxp only points to the read-only access location. For extra
-	portability, you should only use this variable within your makefiles.
-
-installprefix (installprefix.U):
-	This variable holds the name of the directory below which 
-	"make install" will install the package.  For most users, this
-	is the same as prefix.  However, it is useful for
-	installing the software into a different (usually temporary)
-	location after which it can be bundled up and moved somehow
-	to the final location specified by prefix.
-
-installprefixexp (installprefix.U):
-	This variable holds the full absolute path of installprefix
-	with all ~-expansion done.
-
-installprivlib (privlib.U):
-	This variable is really the same as privlibexp but may differ on
-	those systems using AFS. For extra portability, only this variable
-	should be used in makefiles.
-
-installscript (scriptdir.U):
-	This variable is usually the same as scriptdirexp, unless you are on
-	a system running AFS, in which case they may differ slightly. You
-	should always use this variable within your makefiles for portability.
-
-installsitearch (sitearch.U):
-	This variable is really the same as sitearchexp but may differ on
-	those systems using AFS. For extra portability, only this variable
-	should be used in makefiles.
-
-installsitebin (sitebin.U):
-	This variable is usually the same as sitebinexp, unless you are on
-	a system running AFS, in which case they may differ slightly. You
-	should always use this variable within your makefiles for portability.
-
-installsitelib (sitelib.U):
-	This variable is really the same as sitelibexp but may differ on
-	those systems using AFS. For extra portability, only this variable
-	should be used in makefiles.
-
-installstyle (installstyle.U):
-	This variable describes the "style" of the perl installation.
-	This is intended to be useful for tools that need to
-	manipulate entire perl distributions.  Perl itself doesn't use
-	this to find its libraries -- the library directories are
-	stored directly in Config.pm.  Currently, there are only two
-	styles:  "lib" and "lib/perl5".  The default library locations
-	(e.g. privlib, sitelib) are either $prefix/lib or
-	$prefix/lib/perl5.  The former is useful if $prefix is a
-	directory dedicated to perl (e.g. /opt/perl), while the latter
-	is useful if $prefix is shared by many packages, e.g. if
-	$prefix=/usr/local.
-		This may later be extended to include other information, so
-	be careful with pattern-matching on the results.
-		For compatibility with perl5.005 and earlier, the default
-	setting is based on whether or not $prefix contains the string
-	"perl".
-
-installusrbinperl (instubperl.U):
-	This variable tells whether Perl should be installed also as
-	/usr/bin/perl in addition to
-	$installbin/perl
-
-installvendorarch (vendorarch.U):
-	This variable is really the same as vendorarchexp but may differ on
-	those systems using AFS. For extra portability, only this variable
-	should be used in makefiles.
-
-installvendorbin (vendorbin.U):
-	This variable is really the same as vendorbinexp but may differ on
-	those systems using AFS. For extra portability, only this variable
-	should be used in makefiles.
-
-installvendorlib (vendorlib.U):
-	This variable is really the same as vendorlibexp but may differ on
-	those systems using AFS. For extra portability, only this variable
-	should be used in makefiles.
-
-intsize (intsize.U):
-	This variable contains the value of the INTSIZE symbol, which
-	indicates to the C program how many bytes there are in an int.
-
-issymlink (issymlink.U):
-	This variable holds the test command to test for a symbolic link
-	(if they are supported).  Typical values include 'test -h' and
-	'test -L'.
-
-ivdformat (perlxvf.U):
-	This variable contains the format string used for printing
-	a Perl IV as a signed decimal integer. 
-
-ivsize (perlxv.U):
-	This variable is the size of an IV in bytes.
-
-ivtype (perlxv.U):
-	This variable contains the C type used for Perl's IV.
-
-known_extensions (Extensions.U):
-	This variable holds a list of all XS extensions included in 
-	the package.
-
-ksh (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-ld (dlsrc.U):
-	This variable indicates the program to be used to link
-	libraries for dynamic loading.  On some systems, it is 'ld'.
-	On ELF systems, it should be $cc.  Mostly, we'll try to respect
-	the hint file setting.
-
-lddlflags (dlsrc.U):
-	This variable contains any special flags that might need to be
-	passed to $ld to create a shared library suitable for dynamic
-	loading.  It is up to the makefile to use it.  For hpux, it
-	should be '-b'.  For sunos 4.1, it is empty.
-
-ldflags (ccflags.U):
-	This variable contains any additional C loader flags desired by
-	the user.  It is up to the Makefile to use this.
-
-ldflags_uselargefiles (uselfs.U):
-	This variable contains the loader flags needed by large file builds
-	and added to ldflags by hints files.
-
-ldlibpthname (libperl.U):
-	This variable holds the name of the shared library
-	search path, often LD_LIBRARY_PATH.  To get an empty
-	string, the hints file must set this to 'none'.
-
-less (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the less program.  After Configure runs,
-	the value is reset to a plain "less" and is not useful.
-
-lib_ext (Unix.U):
-	This is an old synonym for _a.
-
-libc (libc.U):
-	This variable contains the location of the C library.
-
-libperl (libperl.U):
-	The perl executable is obtained by linking perlmain.c with
-	libperl, any static extensions (usually just DynaLoader),
-	and any other libraries needed on this system.  libperl
-	is usually libperl.a, but can also be libperl.so.xxx if
-	the user wishes to build a perl executable with a shared
-	library.
-
-libpth (libpth.U):
-	This variable holds the general path (space-separated) used to find
-	libraries. It is intended to be used by other units.
-
-libs (libs.U):
-	This variable holds the additional libraries we want to use.
-	It is up to the Makefile to deal with it.
-
-libsdirs (libs.U):
-	This variable holds the directory names aka dirnames of the libraries
-	we found and accepted, duplicates are removed.
-
-libsfiles (libs.U):
-	This variable holds the filenames aka basenames of the libraries
-	we found and accepted.
-
-libsfound (libs.U):
-	This variable holds the full pathnames of the libraries
-	we found and accepted.
-
-libspath (libs.U):
-	This variable holds the directory names probed for libraries.
-
-libswanted (Myinit.U):
-	This variable holds a list of all the libraries we want to
-	search.  The order is chosen to pick up the c library
-	ahead of ucb or bsd libraries for SVR4.
-
-libswanted_uselargefiles (uselfs.U):
-	This variable contains the libraries needed by large file builds
-	and added to ldflags by hints files.  It is a space separated list
-	of the library names without the "lib" prefix or any suffix, just
-	like libswanted..
-
-line (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-lint (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-lkflags (ccflags.U):
-	This variable contains any additional C partial linker flags desired by
-	the user.  It is up to the Makefile to use this.
-
-ln (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the ln program.  After Configure runs,
-	the value is reset to a plain "ln" and is not useful.
-
-lns (lns.U):
-	This variable holds the name of the command to make 
-	symbolic links (if they are supported).  It can be used
-	in the Makefile. It is either 'ln -s' or 'ln'
-
-locincpth (ccflags.U):
-	This variable contains a list of additional directories to be
-	searched by the compiler.  The appropriate '-I' directives will
-	be added to ccflags.  This is intended to simplify setting
-	local directories from the Configure command line.
-	It's not much, but it parallels the loclibpth stuff in libpth.U.
-
-loclibpth (libpth.U):
-	This variable holds the paths (space-separated) used to find local
-	libraries.  It is prepended to libpth, and is intended to be easily
-	set from the command line.
-
-longdblsize (d_longdbl.U):
-	This variable contains the value of the LONG_DOUBLESIZE symbol, which
-	indicates to the C program how many bytes there are in a long double,
-	if this system supports long doubles.
-
-longlongsize (d_longlong.U):
-	This variable contains the value of the LONGLONGSIZE symbol, which
-	indicates to the C program how many bytes there are in a long long,
-	if this system supports long long.
-
-longsize (intsize.U):
-	This variable contains the value of the LONGSIZE symbol, which
-	indicates to the C program how many bytes there are in a long.
-
-lp (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-lpr (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-ls (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the ls program.  After Configure runs,
-	the value is reset to a plain "ls" and is not useful.
-
-lseeksize (lseektype.U):
-	This variable defines lseektype to be something like off_t, long, 
-	or whatever type is used to declare lseek offset's type in the
-	kernel (which also appears to be lseek's return type).
-
-lseektype (lseektype.U):
-	This variable defines lseektype to be something like off_t, long, 
-	or whatever type is used to declare lseek offset's type in the
-	kernel (which also appears to be lseek's return type).
-
-mail (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-mailx (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-make (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the make program.  After Configure runs,
-	the value is reset to a plain "make" and is not useful.
-
-make_set_make (make.U):
-	Some versions of 'make' set the variable MAKE.  Others do not.
-	This variable contains the string to be included in Makefile.SH
-	so that MAKE is set if needed, and not if not needed.
-	Possible values are:
-	make_set_make='#'		# If your make program handles this for you,
-	make_set_make="MAKE=$make"	# if it doesn't.
-	I used a comment character so that we can distinguish a
-	'set' value (from a previous config.sh or Configure '-D' option)
-	from an uncomputed value.
-
-mallocobj (mallocsrc.U):
-	This variable contains the name of the malloc.o that this package
-	generates, if that malloc.o is preferred over the system malloc.
-	Otherwise the value is null.  This variable is intended for generating
-	Makefiles.  See mallocsrc.
-
-mallocsrc (mallocsrc.U):
-	This variable contains the name of the malloc.c that comes with
-	the package, if that malloc.c is preferred over the system malloc.
-	Otherwise the value is null.  This variable is intended for generating
-	Makefiles.
-
-malloctype (mallocsrc.U):
-	This variable contains the kind of ptr returned by malloc and realloc.
-
-man1dir (man1dir.U):
-	This variable contains the name of the directory in which manual
-	source pages are to be put.  It is the responsibility of the
-	Makefile.SH to get the value of this into the proper command.
-	You must be prepared to do the ~name expansion yourself.
-
-man1direxp (man1dir.U):
-	This variable is the same as the man1dir variable, but is filename
-	expanded at configuration time, for convenient use in makefiles.
-
-man1ext (man1dir.U):
-	This variable contains the extension that the manual page should
-	have: one of 'n', 'l', or '1'.  The Makefile must supply the '.'.
-	See man1dir.
-
-man3dir (man3dir.U):
-	This variable contains the name of the directory in which manual
-	source pages are to be put.  It is the responsibility of the
-	Makefile.SH to get the value of this into the proper command.
-	You must be prepared to do the ~name expansion yourself.
-
-man3direxp (man3dir.U):
-	This variable is the same as the man3dir variable, but is filename
-	expanded at configuration time, for convenient use in makefiles.
-
-man3ext (man3dir.U):
-	This variable contains the extension that the manual page should
-	have: one of 'n', 'l', or '3'.  The Makefile must supply the '.'.
-	See man3dir.
-
-Mcc (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the Mcc program.  After Configure runs,
-	the value is reset to a plain "Mcc" and is not useful.
-
-mips_type (usrinc.U):
-	This variable holds the environment type for the mips system.
-	Possible values are "BSD 4.3" and "System V".
-
-mkdir (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the mkdir program.  After Configure runs,
-	the value is reset to a plain "mkdir" and is not useful.
-
-mmaptype (d_mmap.U):
-	This symbol contains the type of pointer returned by mmap()
-	(and simultaneously the type of the first argument).
-	It can be 'void *' or 'caddr_t'.
-
-modetype (modetype.U):
-	This variable defines modetype to be something like mode_t, 
-	int, unsigned short, or whatever type is used to declare file 
-	modes for system calls.
-
-more (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the more program.  After Configure runs,
-	the value is reset to a plain "more" and is not useful.
-
-multiarch (multiarch.U):
-	This variable conditionally defines the MULTIARCH symbol
-	which signifies the presence of multiplatform files.
-	This is normally set by hints files.
-
-mv (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-myarchname (archname.U):
-	This variable holds the architecture name computed by Configure in
-	a previous run. It is not intended to be perused by any user and
-	should never be set in a hint file.
-
-mydomain (myhostname.U):
-	This variable contains the eventual value of the MYDOMAIN symbol,
-	which is the domain of the host the program is going to run on.
-	The domain must be appended to myhostname to form a complete host name.
-	The dot comes with mydomain, and need not be supplied by the program.
-
-myhostname (myhostname.U):
-	This variable contains the eventual value of the MYHOSTNAME symbol,
-	which is the name of the host the program is going to run on.
-	The domain is not kept with hostname, but must be gotten from mydomain.
-	The dot comes with mydomain, and need not be supplied by the program.
-
-myuname (Oldconfig.U):
-	The output of 'uname -a' if available, otherwise the hostname. On Xenix,
-	pseudo variables assignments in the output are stripped, thank you. The
-	whole thing is then lower-cased.
-
-n (n.U):
-	This variable contains the '-n' flag if that is what causes the echo
-	command to suppress newline.  Otherwise it is null.  Correct usage is
-	$echo $n "prompt for a question: $c".
-
-need_va_copy (need_va_copy.U):
-	This symbol, if defined, indicates that the system stores
-	the variable argument list datatype, va_list, in a format
-	that cannot be copied by simple assignment, so that some
-	other means must be used when copying is required.
-	As such systems vary in their provision (or non-provision)
-	of copying mechanisms, handy.h defines a platform-
-	independent macro, Perl_va_copy(src, dst), to do the job.
-
-netdb_hlen_type (netdbtype.U):
-	This variable holds the type used for the 2nd argument to
-	gethostbyaddr().  Usually, this is int or size_t or unsigned.
-	This is only useful if you have gethostbyaddr(), naturally.
-
-netdb_host_type (netdbtype.U):
-	This variable holds the type used for the 1st argument to
-	gethostbyaddr().  Usually, this is char * or void *,  possibly
-	with or without a const prefix.
-	This is only useful if you have gethostbyaddr(), naturally.
-
-netdb_name_type (netdbtype.U):
-	This variable holds the type used for the argument to
-	gethostbyname().  Usually, this is char * or const char *.
-	This is only useful if you have gethostbyname(), naturally.
-
-netdb_net_type (netdbtype.U):
-	This variable holds the type used for the 1st argument to
-	getnetbyaddr().  Usually, this is int or long.
-	This is only useful if you have getnetbyaddr(), naturally.
-
-nm (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the nm program.  After Configure runs,
-	the value is reset to a plain "nm" and is not useful.
-
-nm_opt (usenm.U):
-	This variable holds the options that may be necessary for nm.
-
-nm_so_opt (usenm.U):
-	This variable holds the options that may be necessary for nm
-	to work on a shared library but that can not be used on an
-	archive library.  Currently, this is only used by Linux, where
-	nm --dynamic is *required* to get symbols from an ELF library which
-	has been stripped, but nm --dynamic is *fatal* on an archive library.
-	Maybe Linux should just always set usenm=false.
-
-nonxs_ext (Extensions.U):
-	This variable holds a list of all non-xs extensions included
-	in the package.  All of them will be built.
-
-nroff (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the nroff program.  After Configure runs,
-	the value is reset to a plain "nroff" and is not useful.
-
-nveformat (perlxvf.U):
-	This variable contains the format string used for printing
-	a Perl NV using %e-ish floating point format.
-
-nvEUformat (perlxvf.U):
-	This variable contains the format string used for printing
-	a Perl NV using %E-ish floating point format.
-
-nvfformat (perlxvf.U):
-	This variable confains the format string used for printing
-	a Perl NV using %f-ish floating point format.
-
-nvFUformat (perlxvf.U):
-	This variable confains the format string used for printing
-	a Perl NV using %F-ish floating point format.
-
-nvgformat (perlxvf.U):
-	This variable contains the format string used for printing
-	a Perl NV using %g-ish floating point format.
-
-nvGUformat (perlxvf.U):
-	This variable contains the format string used for printing
-	a Perl NV using %G-ish floating point format.
-
-nvsize (perlxv.U):
-	This variable is the size of an NV in bytes.
-
-nvtype (perlxv.U):
-	This variable contains the C type used for Perl's NV.
-
-o_nonblock (nblock_io.U):
-	This variable bears the symbol value to be used during open() or fcntl()
-	to turn on non-blocking I/O for a file descriptor. If you wish to switch
-	between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
-	but that is only supported by some devices.
-
-obj_ext (Unix.U):
-	This is an old synonym for _o.
-
-old_pthread_create_joinable (d_pthrattrj.U):
-	This variable defines the constant to use for creating joinable
-	(aka undetached) pthreads.  Unused if pthread.h defines
-	PTHREAD_CREATE_JOINABLE.  If used, possible values are
-	PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
-
-optimize (ccflags.U):
-	This variable contains any optimizer/debugger flag that should be used.
-	It is up to the Makefile to use it.
-
-orderlib (orderlib.U):
-	This variable is "true" if the components of libraries must be ordered
-	(with `lorder $* | tsort`) before placing them in an archive.  Set to
-	"false" if ranlib or ar can generate random libraries.
-
-osname (Oldconfig.U):
-	This variable contains the operating system name (e.g. sunos,
-	solaris, hpux, etc.).  It can be useful later on for setting
-	defaults.  Any spaces are replaced with underscores.  It is set
-	to a null string if we can't figure it out.
-
-osvers (Oldconfig.U):
-	This variable contains the operating system version (e.g.
-	4.1.3, 5.2, etc.).  It is primarily used for helping select
-	an appropriate hints file, but might be useful elsewhere for
-	setting defaults.  It is set to '' if we can't figure it out.
-	We try to be flexible about how much of the version number
-	to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
-	same for this package, hints files might just be os_4.0 or
-	os_4.1, etc., not keeping separate files for each little release.
-
-otherlibdirs (otherlibdirs.U):
-	This variable contains a colon-separated set of paths for the perl
-	binary to search for additional library files or modules.
-	These directories will be tacked to the end of @INC.
-	Perl will automatically search below each path for version-
-	and architecture-specific directories.  See inc_version_list
-	for more details.
-	A value of ' ' means 'none' and is used to preserve this value
-	for the next run through Configure.
-
-package (package.U):
-	This variable contains the name of the package being constructed.
-	It is primarily intended for the use of later Configure units.
-
-pager (pager.U):
-	This variable contains the name of the preferred pager on the system.
-	Usual values are (the full pathnames of) more, less, pg, or cat.
-
-passcat (nis.U):
-	This variable contains a command that produces the text of the
-	/etc/passwd file.  This is normally "cat /etc/passwd", but can be
-	"ypcat passwd" when NIS is used.
-	On some systems, such as os390, there may be no equivalent
-	command, in which case this variable is unset.
-
-patchlevel (patchlevel.U):
-	The patchlevel level of this package.
-	The value of patchlevel comes from the patchlevel.h file.
-	In a version number such as 5.6.1, this is the "6".
-	In patchlevel.h, this is referred to as "PERL_VERSION".
-
-path_sep (Unix.U):
-	This is an old synonym for p_ in Head.U, the character
-	used to separate elements in the command shell search PATH.
-
-perl5 (perl5.U):
-	This variable contains the full path (if any) to a previously
-	installed perl5.005 or later suitable for running the script
-	to determine inc_version_list.
-
-perl (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-PERL_REVISION (Oldsyms.U):
-	In a Perl version number such as 5.6.2, this is the 5.
-	This value is manually set in patchlevel.h
-
-PERL_SUBVERSION (Oldsyms.U):
-	In a Perl version number such as 5.6.2, this is the 2.
-	Values greater than 50 represent potentially unstable
-	development subversions.
-	This value is manually set in patchlevel.h
-
-PERL_VERSION (Oldsyms.U):
-	In a Perl version number such as 5.6.2, this is the 6.
-	This value is manually set in patchlevel.h
-
-perladmin (perladmin.U):
-	Electronic mail address of the perl5 administrator.
-
-perllibs (End.U):
-	The list of libraries needed by Perl only (any libraries needed
-	by extensions only will by dropped, if using dynamic loading).
-
-perlpath (perlpath.U):
-	This variable contains the eventual value of the PERLPATH symbol,
-	which contains the name of the perl interpreter to be used in
-	shell scripts and in the "eval 'exec'" idiom.
-
-pg (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the pg program.  After Configure runs,
-	the value is reset to a plain "pg" and is not useful.
-
-phostname (myhostname.U):
-	This variable contains the eventual value of the PHOSTNAME symbol,
-	which is a command that can be fed to popen() to get the host name.
-	The program should probably not presume that the domain is or isn't
-	there already.
-
-pidtype (pidtype.U):
-	This variable defines PIDTYPE to be something like pid_t, int, 
-	ushort, or whatever type is used to declare process ids in the kernel.
-
-plibpth (libpth.U):
-	Holds the private path used by Configure to find out the libraries.
-	Its value is prepend to libpth. This variable takes care of special
-	machines, like the mips.  Usually, it should be empty.
-
-pm_apiversion (xs_apiversion.U):
-	This variable contains the version of the oldest perl
-	compatible with the present perl.  (That is, pure perl modules
-	written for $pm_apiversion will still work for the current
-	version).  perl.c:incpush() and lib/lib.pm will automatically
-	search in $sitelib for older directories across major versions
-	back to pm_apiversion.  This is only useful if you have a perl
-	library directory tree structured like the default one.  The
-	versioned site_perl library was introduced in 5.005, so that's
-	the default setting for this variable.  It's hard to imagine
-	it changing before Perl6.  It is included here for symmetry
-	with xs_apiveprsion -- the searching algorithms will
-	(presumably) be similar.
-	See the INSTALL file for how this works.
-
-pmake (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-pr (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-prefix (prefix.U):
-	This variable holds the name of the directory below which the
-	user will install the package.  Usually, this is /usr/local, and
-	executables go in /usr/local/bin, library stuff in /usr/local/lib,
-	man pages in /usr/local/man, etc.  It is only used to set defaults
-	for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
-
-prefixexp (prefix.U):
-	This variable holds the full absolute path of the directory below
-	which the user will install the package.  Derived from prefix.
-
-privlib (privlib.U):
-	This variable contains the eventual value of the PRIVLIB symbol,
-	which is the name of the private library for this package.  It may
-	have a ~ on the front. It is up to the makefile to eventually create
-	this directory while performing installation (with ~ substitution).
-
-privlibexp (privlib.U):
-	This variable is the ~name expanded version of privlib, so that you
-	may use it directly in Makefiles or shell scripts.
-
-prototype (prototype.U):
-	This variable holds the eventual value of CAN_PROTOTYPE, which
-	indicates the C compiler can handle funciton prototypes.
-
-ptrsize (ptrsize.U):
-	This variable contains the value of the PTRSIZE symbol, which
-	indicates to the C program how many bytes there are in a pointer.
-
-quadkind (quadtype.U):
-	This variable, if defined, encodes the type of a quad:
-	1 = int, 2 = long, 3 = long long, 4 = int64_t.
-
-quadtype (quadtype.U):
-	This variable defines Quad_t to be something like long, int, 
-	long long, int64_t, or whatever type is used for 64-bit integers.
-
-randbits (randfunc.U):
-	Indicates how many bits are produced by the function used to
-	generate normalized random numbers.
-
-randfunc (randfunc.U):
-	Indicates the name of the random number function to use.
-	Values include drand48, random, and rand. In C programs,
-	the 'Drand01' macro is defined to generate uniformly distributed
-	random numbers over the range [0., 1.[ (see drand01 and nrand).
-
-randseedtype (randfunc.U):
-	Indicates the type of the argument of the seedfunc.
-
-ranlib (orderlib.U):
-	This variable is set to the pathname of the ranlib program, if it is
-	needed to generate random libraries.  Set to ":" if ar can generate
-	random libraries or if random libraries are not supported
-
-rd_nodata (nblock_io.U):
-	This variable holds the return code from read() when no data is
-	present. It should be -1, but some systems return 0 when O_NDELAY is
-	used, which is a shame because you cannot make the difference between
-	no data and an EOF.. Sigh!
-
-revision (patchlevel.U):
-	The value of revision comes from the patchlevel.h file.
-	In a version number such as 5.6.1, this is the "5".
-	In patchlevel.h, this is referred to as "PERL_REVISION".
-
-rm (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the rm program.  After Configure runs,
-	the value is reset to a plain "rm" and is not useful.
-
-rmail (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-runnm (usenm.U):
-	This variable contains 'true' or 'false' depending whether the
-	nm extraction should be performed or not, according to the value
-	of usenm and the flags on the Configure command line.
-
-sched_yield (d_pthread_y.U):
-	This variable defines the way to yield the execution
-	of the current thread.
-
-scriptdir (scriptdir.U):
-	This variable holds the name of the directory in which the user wants
-	to put publicly scripts for the package in question.  It is either
-	the same directory as for binaries, or a special one that can be
-	mounted across different architectures, like /usr/share. Programs
-	must be prepared to deal with ~name expansion.
-
-scriptdirexp (scriptdir.U):
-	This variable is the same as scriptdir, but is filename expanded
-	at configuration time, for programs not wanting to bother with it.
-
-sed (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the sed program.  After Configure runs,
-	the value is reset to a plain "sed" and is not useful.
-
-seedfunc (randfunc.U):
-	Indicates the random number generating seed function.
-	Values include srand48, srandom, and srand.
-
-selectminbits (selectminbits.U):
-	This variable holds the minimum number of bits operated by select.
-	That is, if you do select(n, ...), how many bits at least will be
-	cleared in the masks if some activity is detected.  Usually this
-	is either n or 32*ceil(n/32), especially many little-endians do
-	the latter.  This is only useful if you have select(), naturally.
-
-selecttype (selecttype.U):
-	This variable holds the type used for the 2nd, 3rd, and 4th
-	arguments to select.  Usually, this is 'fd_set *', if HAS_FD_SET
-	is defined, and 'int *' otherwise.  This is only useful if you 
-	have select(), naturally.
-
-sendmail (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-sh (sh.U):
-	This variable contains the full pathname of the shell used
-	on this system to execute Bourne shell scripts.  Usually, this will be
-	/bin/sh, though it's possible that some systems will have /bin/ksh,
-	/bin/pdksh, /bin/ash, /bin/bash, or even something such as
-	D:/bin/sh.exe.
-	This unit comes before Options.U, so you can't set sh with a '-D'
-	option, though you can override this (and startsh)
-	with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
-
-shar (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-sharpbang (spitshell.U):
-	This variable contains the string #! if this system supports that
-	construct.
-
-shmattype (d_shmat.U):
-	This symbol contains the type of pointer returned by shmat().
-	It can be 'void *' or 'char *'.
-
-shortsize (intsize.U):
-	This variable contains the value of the SHORTSIZE symbol which
-	indicates to the C program how many bytes there are in a short.
-
-shrpenv (libperl.U):
-	If the user builds a shared libperl.so, then we need to tell the
-	'perl' executable where it will be able to find the installed libperl.so. 
-	One way to do this on some systems is to set the environment variable
-	LD_RUN_PATH to the directory that will be the final location of the
-	shared libperl.so.  The makefile can use this with something like
-	$shrpenv $(CC) -o perl perlmain.o $libperl $libs
-	Typical values are
-	shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
-	or
-	shrpenv=''
-	See the main perl Makefile.SH for actual working usage.
-	Alternatively, we might be able to use a command line option such
-	as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
-	$archlibexp/CORE (Linux).
-
-shsharp (spitshell.U):
-	This variable tells further Configure units whether your sh can
-	handle # comments.
-
-sig_count (sig_name.U):
-	This variable holds a number larger than the largest valid
-	signal number.  This is usually the same as the NSIG macro.
-
-sig_name (sig_name.U):
-	This variable holds the signal names, space separated. The leading
-	SIG in signal name is removed.  A ZERO is prepended to the
-	list.  This is currently not used.
-
-sig_name_init (sig_name.U):
-	This variable holds the signal names, enclosed in double quotes and
-	separated by commas, suitable for use in the SIG_NAME definition 
-	below.  A "ZERO" is prepended to the list, and the list is 
-	terminated with a plain 0.  The leading SIG in signal names
-	is removed. See sig_num.
-
-sig_num (sig_name.U):
-	This variable holds the signal numbers, space separated. A ZERO is
-	prepended to the list (corresponding to the fake SIGZERO), and 
-	the list is terminated with a 0.  Those numbers correspond to 
-	the value of the signal listed in the same place within the
-	sig_name list.
-
-sig_num_init (sig_name.U):
-	This variable holds the signal numbers, enclosed in double quotes and
-	separated by commas, suitable for use in the SIG_NUM definition 
-	below.  A "ZERO" is prepended to the list, and the list is 
-	terminated with a plain 0.
-
-sig_size (sig_name.U):
-	This variable contains the number of elements of the sig_name
-	and sig_num arrays, excluding the final NULL entry.
-
-signal_t (d_voidsig.U):
-	This variable holds the type of the signal handler (void or int).
-
-sitearch (sitearch.U):
-	This variable contains the eventual value of the SITEARCH symbol,
-	which is the name of the private library for this package.  It may
-	have a ~ on the front. It is up to the makefile to eventually create
-	this directory while performing installation (with ~ substitution).
-	The standard distribution will put nothing in this directory.
-	After perl has been installed, users may install their own local
-	architecture-dependent modules in this directory with
-	MakeMaker Makefile.PL
-	or equivalent.  See INSTALL for details.
-
-sitearchexp (sitearch.U):
-	This variable is the ~name expanded version of sitearch, so that you
-	may use it directly in Makefiles or shell scripts.
-
-sitebin (sitebin.U):
-	This variable holds the name of the directory in which the user wants
-	to put add-on publicly executable files for the package in question.  It
-	is most often a local directory such as /usr/local/bin. Programs using
-	this variable must be prepared to deal with ~name substitution.
-	The standard distribution will put nothing in this directory.
-	After perl has been installed, users may install their own local
-	executables in this directory with
-	MakeMaker Makefile.PL
-	or equivalent.  See INSTALL for details.
-
-sitebinexp (sitebin.U):
-	This is the same as the sitebin variable, but is filename expanded at
-	configuration time, for use in your makefiles.
-
-sitelib (sitelib.U):
-	This variable contains the eventual value of the SITELIB symbol,
-	which is the name of the private library for this package.  It may
-	have a ~ on the front. It is up to the makefile to eventually create
-	this directory while performing installation (with ~ substitution).
-	The standard distribution will put nothing in this directory.
-	After perl has been installed, users may install their own local
-	architecture-independent modules in this directory with
-	MakeMaker Makefile.PL
-	or equivalent.  See INSTALL for details.
-
-sitelib_stem (sitelib.U):
-	This variable is $sitelibexp with any trailing version-specific component
-	removed.  The elements in inc_version_list (inc_version_list.U) can
-	be tacked onto this variable to generate a list of directories to search.
-
-sitelibexp (sitelib.U):
-	This variable is the ~name expanded version of sitelib, so that you
-	may use it directly in Makefiles or shell scripts.
-
-siteprefix (siteprefix.U):
-	This variable holds the full absolute path of the directory below
-	which the user will install add-on packages.
-	See INSTALL for usage and examples.
-
-siteprefixexp (siteprefix.U):
-	This variable holds the full absolute path of the directory below
-	which the user will install add-on packages.  Derived from siteprefix.
-
-sizesize (sizesize.U):
-	This variable contains the size of a sizetype in bytes.
-
-sizetype (sizetype.U):
-	This variable defines sizetype to be something like size_t, 
-	unsigned long, or whatever type is used to declare length 
-	parameters for string functions.
-
-sleep (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-smail (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-so (so.U):
-	This variable holds the extension used to identify shared libraries
-	(also known as shared objects) on the system. Usually set to 'so'.
-
-sockethdr (d_socket.U):
-	This variable has any cpp '-I' flags needed for socket support.
-
-socketlib (d_socket.U):
-	This variable has the names of any libraries needed for socket support.
-
-socksizetype (socksizetype.U):
-	This variable holds the type used for the size argument
-	for various socket calls like accept.  Usual values include
-	socklen_t, size_t, and int.
-
-sort (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the sort program.  After Configure runs,
-	the value is reset to a plain "sort" and is not useful.
-
-spackage (package.U):
-	This variable contains the name of the package being constructed,
-	with the first letter uppercased, i.e. suitable for starting
-	sentences.
-
-spitshell (spitshell.U):
-	This variable contains the command necessary to spit out a runnable
-	shell on this system.  It is either cat or a grep '-v' for # comments.
-
-sPRId64 (quadfio.U):
-	This variable, if defined, contains the string used by stdio to
-	format 64-bit decimal numbers (format 'd') for output.
-
-sPRIeldbl (longdblfio.U):
-	This variable, if defined, contains the string used by stdio to
-	format long doubles (format 'e') for output.
-
-sPRIEUldbl (longdblfio.U):
-	This variable, if defined, contains the string used by stdio to
-	format long doubles (format 'E') for output.
-	The 'U' in the name is to separate this from sPRIeldbl so that even
-	case-blind systems can see the difference.
-
-sPRIfldbl (longdblfio.U):
-	This variable, if defined, contains the string used by stdio to
-	format long doubles (format 'f') for output.
-
-sPRIFUldbl (longdblfio.U):
-	This variable, if defined, contains the string used by stdio to
-	format long doubles (format 'F') for output.
-	The 'U' in the name is to separate this from sPRIfldbl so that even
-	case-blind systems can see the difference.
-
-sPRIgldbl (longdblfio.U):
-	This variable, if defined, contains the string used by stdio to
-	format long doubles (format 'g') for output.
-
-sPRIGUldbl (longdblfio.U):
-	This variable, if defined, contains the string used by stdio to
-	format long doubles (format 'G') for output.
-	The 'U' in the name is to separate this from sPRIgldbl so that even
-	case-blind systems can see the difference.
-
-sPRIi64 (quadfio.U):
-	This variable, if defined, contains the string used by stdio to
-	format 64-bit decimal numbers (format 'i') for output.
-
-sPRIo64 (quadfio.U):
-	This variable, if defined, contains the string used by stdio to
-	format 64-bit octal numbers (format 'o') for output.
-
-sPRIu64 (quadfio.U):
-	This variable, if defined, contains the string used by stdio to
-	format 64-bit unsigned decimal numbers (format 'u') for output.
-
-sPRIx64 (quadfio.U):
-	This variable, if defined, contains the string used by stdio to
-	format 64-bit hexadecimal numbers (format 'x') for output.
-
-sPRIXU64 (quadfio.U):
-	This variable, if defined, contains the string used by stdio to
-	format 64-bit hExADECimAl numbers (format 'X') for output.
-	The 'U' in the name is to separate this from sPRIx64 so that even
-	case-blind systems can see the difference.
-
-src (src.U):
-	This variable holds the path to the package source. It is up to
-	the Makefile to use this variable and set VPATH accordingly to
-	find the sources remotely.
-
-sSCNfldbl (longdblfio.U):
-	This variable, if defined, contains the string used by stdio to
-	format long doubles (format 'f') for input.
-
-ssizetype (ssizetype.U):
-	This variable defines ssizetype to be something like ssize_t, 
-	long or int.  It is used by functions that return a count 
-	of bytes or an error condition.  It must be a signed type.
-	We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
-
-startperl (startperl.U):
-	This variable contains the string to put on the front of a perl
-	script to make sure (hopefully) that it runs with perl and not some
-	shell. Of course, that leading line must be followed by the classical
-	perl idiom:
-	eval 'exec perl -S $0 ${1+"$@"}'
-	if $running_under_some_shell;
-	to guarantee perl startup should the shell execute the script. Note
-	that this magic incatation is not understood by csh.
-
-startsh (startsh.U):
-	This variable contains the string to put on the front of a shell
-	script to make sure (hopefully) that it runs with sh and not some
-	other shell.
-
-static_ext (Extensions.U):
-	This variable holds a list of XS extension files we want to
-	link statically into the package.  It is used by Makefile.
-
-stdchar (stdchar.U):
-	This variable conditionally defines STDCHAR to be the type of char
-	used in stdio.h.  It has the values "unsigned char" or "char".
-
-stdio_base (d_stdstdio.U):
-	This variable defines how, given a FILE pointer, fp, to access the
-	_base field (or equivalent) of stdio.h's FILE structure.  This will
-	be used to define the macro FILE_base(fp).
-
-stdio_bufsiz (d_stdstdio.U):
-	This variable defines how, given a FILE pointer, fp, to determine
-	the number of bytes store in the I/O buffer pointer to by the
-	_base field (or equivalent) of stdio.h's FILE structure.  This will
-	be used to define the macro FILE_bufsiz(fp).
-
-stdio_cnt (d_stdstdio.U):
-	This variable defines how, given a FILE pointer, fp, to access the
-	_cnt field (or equivalent) of stdio.h's FILE structure.  This will
-	be used to define the macro FILE_cnt(fp).
-
-stdio_filbuf (d_stdstdio.U):
-	This variable defines how, given a FILE pointer, fp, to tell
-	stdio to refill it's internal buffers (?).  This will
-	be used to define the macro FILE_filbuf(fp).
-
-stdio_ptr (d_stdstdio.U):
-	This variable defines how, given a FILE pointer, fp, to access the
-	_ptr field (or equivalent) of stdio.h's FILE structure.  This will
-	be used to define the macro FILE_ptr(fp).
-
-stdio_stream_array (stdio_streams.U):
-	This variable tells the name of the array holding the stdio streams.
-	Usual values include _iob, __iob, and __sF.
-
-strings (i_string.U):
-	This variable holds the full path of the string header that will be
-	used. Typically /usr/include/string.h or /usr/include/strings.h.
-
-submit (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-subversion (patchlevel.U):
-	The subversion level of this package.
-	The value of subversion comes from the patchlevel.h file.
-	In a version number such as 5.6.1, this is the "1".
-	In patchlevel.h, this is referred to as "PERL_SUBVERSION".
-	This is unique to perl.
-
-sysman (sysman.U):
-	This variable holds the place where the manual is located on this
-	system. It is not the place where the user wants to put his manual
-	pages. Rather it is the place where Configure may look to find manual
-	for unix commands (section 1 of the manual usually). See mansrc.
-
-tail (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-tar (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-tbl (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-tee (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-test (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the test program.  After Configure runs,
-	the value is reset to a plain "test" and is not useful.
-
-timeincl (i_time.U):
-	This variable holds the full path of the included time header(s).
-
-timetype (d_time.U):
-	This variable holds the type returned by time(). It can be long,
-	or time_t on BSD sites (in which case <sys/types.h> should be
-	included). Anyway, the type Time_t should be used.
-
-touch (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the touch program.  After Configure runs,
-	the value is reset to a plain "touch" and is not useful.
-
-tr (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the tr program.  After Configure runs,
-	the value is reset to a plain "tr" and is not useful.
-
-trnl (trnl.U):
-	This variable contains the value to be passed to the tr(1)
-	command to transliterate a newline.  Typical values are
-	'\012' and '\n'.  This is needed for EBCDIC systems where
-	newline is not necessarily '\012'.
-
-troff (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-u16size (perlxv.U):
-	This variable is the size of an U16 in bytes.
-
-u16type (perlxv.U):
-	This variable contains the C type used for Perl's U16.
-
-u32size (perlxv.U):
-	This variable is the size of an U32 in bytes.
-
-u32type (perlxv.U):
-	This variable contains the C type used for Perl's U32.
-
-u64size (perlxv.U):
-	This variable is the size of an U64 in bytes.
-
-u64type (perlxv.U):
-	This variable contains the C type used for Perl's U64.
-
-u8size (perlxv.U):
-	This variable is the size of an U8 in bytes.
-
-u8type (perlxv.U):
-	This variable contains the C type used for Perl's U8.
-
-uidformat (uidf.U):
-	This variable contains the format string used for printing a Uid_t.
-
-uidsign (uidsign.U):
-	This variable contains the signedness of a uidtype.
-	1 for unsigned, -1 for signed.
-
-uidsize (uidsize.U):
-	This variable contains the size of a uidtype in bytes.
-
-uidtype (uidtype.U):
-	This variable defines Uid_t to be something like uid_t, int, 
-	ushort, or whatever type is used to declare user ids in the kernel.
-
-uname (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the uname program.  After Configure runs,
-	the value is reset to a plain "uname" and is not useful.
-
-uniq (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the uniq program.  After Configure runs,
-	the value is reset to a plain "uniq" and is not useful.
-
-uquadtype (quadtype.U):
-	This variable defines Uquad_t to be something like unsigned long,
-	unsigned int, unsigned long long, uint64_t, or whatever type is
-	used for 64-bit integers.
-
-use5005threads (usethreads.U):
-	This variable conditionally defines the USE_5005THREADS symbol,
-	and indicates that Perl should be built to use the 5.005-based
-	threading implementation.
-
-use64bitall (use64bits.U):
-	This variable conditionally defines the USE_64_BIT_ALL symbol,
-	and indicates that 64-bit integer types should be used
-	when available.  The maximal possible
-	64-bitness is employed: LP64 or ILP64, meaning that you will
-	be able to use more than 2 gigabytes of memory.  This mode is
-	even more binary incompatible than USE_64_BIT_INT. You may not
-	be able to run the resulting executable in a 32-bit CPU at all or
-	you may need at least to reboot your OS to 64-bit mode.
-
-use64bitint (use64bits.U):
-	This variable conditionally defines the USE_64_BIT_INT symbol,
-	and indicates that 64-bit integer types should be used
-	when available.  The minimal possible 64-bitness
-	is employed, just enough to get 64-bit integers into Perl.
-	This may mean using for example "long longs", while your memory
-	may still be limited to 2 gigabytes.
-
-usedl (dlsrc.U):
-	This variable indicates if the system supports dynamic
-	loading of some sort.  See also dlsrc and dlobj.
-
-useithreads (usethreads.U):
-	This variable conditionally defines the USE_ITHREADS symbol,
-	and indicates that Perl should be built to use the interpreter-based
-	threading implementation.
-
-uselargefiles (uselfs.U):
-	This variable conditionally defines the USE_LARGE_FILES symbol,
-	and indicates that large file interfaces should be used when
-	available.
-
-uselongdouble (uselongdbl.U):
-	This variable conditionally defines the USE_LONG_DOUBLE symbol,
-	and indicates that long doubles should be used when available.
-
-usemorebits (usemorebits.U):
-	This variable conditionally defines the USE_MORE_BITS symbol,
-	and indicates that explicit 64-bit interfaces and long doubles
-	should be used when available.
-
-usemultiplicity (usemultiplicity.U):
-	This variable conditionally defines the MULTIPLICITY symbol,
-	and indicates that Perl should be built to use multiplicity.
-
-usemymalloc (mallocsrc.U):
-	This variable contains y if the malloc that comes with this package
-	is desired over the system's version of malloc.  People often include
-	special versions of malloc for effiency, but such versions are often
-	less portable.  See also mallocsrc and mallocobj.
-	If this is 'y', then -lmalloc is removed from $libs.
-
-usenm (usenm.U):
-	This variable contains 'true' or 'false' depending whether the
-	nm extraction is wanted or not.
-
-useopcode (Extensions.U):
-	This variable holds either 'true' or 'false' to indicate
-	whether the Opcode extension should be used.  The sole
-	use for this currently is to allow an easy mechanism
-	for users to skip the Opcode extension from the Configure
-	command line.
-
-useperlio (useperlio.U):
-	This variable conditionally defines the USE_PERLIO symbol,
-	and indicates that the PerlIO abstraction should be
-	used throughout.
-
-useposix (Extensions.U):
-	This variable holds either 'true' or 'false' to indicate
-	whether the POSIX extension should be used.  The sole
-	use for this currently is to allow an easy mechanism
-	for hints files to indicate that POSIX will not compile
-	on a particular system.
-
-usesfio (d_sfio.U):
-	This variable is set to true when the user agrees to use sfio.
-	It is set to false when sfio is not available or when the user
-	explicitely requests not to use sfio.  It is here primarily so
-	that command-line settings can override the auto-detection of
-	d_sfio without running into a "WHOA THERE".
-
-useshrplib (libperl.U):
-	This variable is set to 'yes' if the user wishes
-	to build a shared libperl, and 'no' otherwise.
-
-usesocks (usesocks.U):
-	This variable conditionally defines the USE_SOCKS symbol,
-	and indicates that Perl should be built to use SOCKS.
-
-usethreads (usethreads.U):
-	This variable conditionally defines the USE_THREADS symbol,
-	and indicates that Perl should be built to use threads.
-
-usevendorprefix (vendorprefix.U):
-	This variable tells whether the vendorprefix
-	and consequently other vendor* paths are in use.
-
-usevfork (d_vfork.U):
-	This variable is set to true when the user accepts to use vfork.
-	It is set to false when no vfork is available or when the user
-	explicitely requests not to use vfork.
-
-usrinc (usrinc.U):
-	This variable holds the path of the include files, which is
-	usually /usr/include. It is mainly used by other Configure units.
-
-uuname (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-uvoformat (perlxvf.U):
-	This variable contains the format string used for printing
-	a Perl UV as an unsigned octal integer. 
-
-uvsize (perlxv.U):
-	This variable is the size of a UV in bytes.
-
-uvtype (perlxv.U):
-	This variable contains the C type used for Perl's UV.
-
-uvuformat (perlxvf.U):
-	This variable contains the format string used for printing
-	a Perl UV as an unsigned decimal integer. 
-
-uvxformat (perlxvf.U):
-	This variable contains the format string used for printing
-	a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
-
-uvXUformat (perlxvf.U):
-	This variable contains the format string used for printing
-	a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
-
-vendorarch (vendorarch.U):
-	This variable contains the value of the PERL_VENDORARCH symbol.
-	It may have a ~ on the front. 
-	The standard distribution will put nothing in this directory.
-	Vendors who distribute perl may wish to place their own
-	architecture-dependent modules and extensions in this directory with
-	MakeMaker Makefile.PL INSTALLDIRS=vendor 
-	or equivalent.  See INSTALL for details.
-
-vendorarchexp (vendorarch.U):
-	This variable is the ~name expanded version of vendorarch, so that you
-	may use it directly in Makefiles or shell scripts.
-
-vendorbin (vendorbin.U):
-	This variable contains the eventual value of the VENDORBIN symbol.
-	It may have a ~ on the front.
-	The standard distribution will put nothing in this directory.
-	Vendors who distribute perl may wish to place additional
-	binaries in this directory with
-	MakeMaker Makefile.PL INSTALLDIRS=vendor 
-	or equivalent.  See INSTALL for details.
-
-vendorbinexp (vendorbin.U):
-	This variable is the ~name expanded version of vendorbin, so that you
-	may use it directly in Makefiles or shell scripts.
-
-vendorlib (vendorlib.U):
-	This variable contains the eventual value of the VENDORLIB symbol,
-	which is the name of the private library for this package.
-	The standard distribution will put nothing in this directory.
-	Vendors who distribute perl may wish to place their own
-	modules in this directory with
-	MakeMaker Makefile.PL INSTALLDIRS=vendor 
-	or equivalent.  See INSTALL for details.
-
-vendorlib_stem (vendorlib.U):
-	This variable is $vendorlibexp with any trailing version-specific component
-	removed.  The elements in inc_version_list (inc_version_list.U) can
-	be tacked onto this variable to generate a list of directories to search.
-
-vendorlibexp (vendorlib.U):
-	This variable is the ~name expanded version of vendorlib, so that you
-	may use it directly in Makefiles or shell scripts.
-
-vendorprefix (vendorprefix.U):
-	This variable holds the full absolute path of the directory below
-	which the vendor will install add-on packages.
-	See INSTALL for usage and examples.
-
-vendorprefixexp (vendorprefix.U):
-	This variable holds the full absolute path of the directory below
-	which the vendor will install add-on packages.  Derived from vendorprefix.
-
-version (patchlevel.U):
-	The full version number of this package, such as 5.6.1 (or 5_6_1).
-	This combines revision, patchlevel, and subversion to get the
-	full version number, including any possible subversions.
-	This is suitable for use as a directory name, and hence is
-	filesystem dependent.
-
-versiononly (versiononly.U):
-	If set, this symbol indicates that only the version-specific
-	components of a perl installation should be installed.
-	This may be useful for making a test installation of a new
-	version without disturbing the existing installation.
-	Setting versiononly is equivalent to setting installperl's -v option.
-	In particular, the non-versioned scripts and programs such as
-	a2p, c2ph, h2xs, pod2*, and perldoc are not installed
-	(see INSTALL for a more complete list).  Nor are the man
-	pages installed.
-	Usually, this is undef.
-
-vi (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-voidflags (voidflags.U):
-	This variable contains the eventual value of the VOIDFLAGS symbol,
-	which indicates how much support of the void type is given by this
-	compiler.  See VOIDFLAGS for more info.
-
-xlibpth (libpth.U):
-	This variable holds extra path (space-separated) used to find
-	libraries on this platform, for example CPU-specific libraries
-	(on multi-CPU platforms) may be listed here.
-
-xs_apiversion (xs_apiversion.U):
-	This variable contains the version of the oldest perl binary
-	compatible with the present perl.  perl.c:incpush() and
-	lib/lib.pm will automatically search in $sitearch for older
-	directories across major versions back to xs_apiversion.
-	This is only useful if you have a perl library directory tree
-	structured like the default one.
-	See INSTALL for how this works.
-	The versioned site_perl directory was introduced in 5.005,
-	so that is the lowest possible value.
-	Since this can depend on compile time options (such as
-	bincompat) it is set by Configure.  Other non-default sources
-	of potential incompatibility, such as multiplicity, threads,
-	debugging, 64bits, sfio, etc., are not checked for currently,
-	though in principle we could go snooping around in old
-	Config.pm files.
-
-zcat (Loc.U):
-	This variable is defined but not used by Configure.
-	The value is a plain '' and is not useful.
-
-zip (Loc.U):
-	This variable is used internally by Configure to determine the
-	full pathname (if any) of the zip program.  After Configure runs,
-	the value is reset to a plain "zip" and is not useful.
-