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Diffstat (limited to 'contrib/perl5/hints/dec_osf.sh')
| -rw-r--r-- | contrib/perl5/hints/dec_osf.sh | 334 |
1 files changed, 334 insertions, 0 deletions
diff --git a/contrib/perl5/hints/dec_osf.sh b/contrib/perl5/hints/dec_osf.sh new file mode 100644 index 0000000..a531ea8 --- /dev/null +++ b/contrib/perl5/hints/dec_osf.sh @@ -0,0 +1,334 @@ +# hints/dec_osf.sh + +# * If you want to debug perl or want to send a +# stack trace for inclusion into an bug report, call +# Configure with the additional argument -Doptimize=-g2 +# or uncomment this assignment to "optimize": +# +#optimize=-g2 +# +# If you want both to optimise and debug with the DEC cc +# you must have -g3, e.g. "-O4 -g3", and (re)run Configure. +# +# * gcc can always have both -g and optimisation on. +# +# * debugging optimised code, no matter what compiler +# one is using, can be surprising and confusing because of +# the optimisation tricks like code motion, code removal, +# loop unrolling, and inlining. The source code and the +# executable code simply do not agree any more while in +# mid-execution, the optimiser only cares about the results. +# +# * Configure will automatically add the often quoted +# -DDEBUGGING for you if the -g is specified. +# +# * There is even more optimisation available in the new +# (GEM) DEC cc: -O5 and -fast. "man cc" will tell more about them. +# The jury is still out whether either or neither help for Perl +# and how much. Based on very quick testing, -fast boosts +# raw data copy by about 5-15% (-fast brings in, among other +# things, inlined, ahem, fast memcpy()), while on the other +# hand searching things (index, m//, s///), seems to get slower. +# Your mileage will vary. +# +# * The -std is needed because the following compiled +# without the -std and linked with -lm +# +# #include <math.h> +# #include <stdio.h> +# int main(){short x=10,y=sqrt(x);printf("%d\n",y);} +# +# will in Digital UNIX 3.* and 4.0b print 0 -- and in Digital +# UNIX 4.0{,a} dump core: Floating point exception in the printf(), +# the y has become a signaling NaN. +# +# * Compilation warnings like: +# +# "Undefined the ANSI standard macro ..." +# +# can be ignored, at least while compiling the POSIX extension +# and especially if using the sfio (the latter is not a standard +# part of Perl, never mind if it says little to you). +# + +# If using the DEC compiler we must find out the DEC compiler style: +# the style changed between Digital UNIX (aka DEC OSF/1) 3 and +# Digital UNIX 4. The old compiler was originally from Ultrix and +# the MIPS company, the new compiler is originally from the VAX world +# and it is called GEM. Many of the options we are going to use depend +# on the compiler style. + +# do NOT, I repeat, *NOT* take away those leading tabs + # reset + _DEC_uname_r= + _DEC_cc_style= + # set + _DEC_uname_r=`uname -r` + # _DEC_cc_style set soon below +# Configure Black Magic (TM) + +case "$cc" in +*gcc*) ;; # pass +*) # compile something small: taint.c is fine for this. + # the main point is the '-v' flag of 'cc'. + case "`cc -v -I. -c taint.c -o /tmp/taint$$.o 2>&1`" in + */gemc_cc*) # we have the new DEC GEM CC + _DEC_cc_style=new + ;; + *) # we have the old MIPS CC + _DEC_cc_style=old + ;; + esac + # cleanup + rm -f /tmp/taint$$.o + ;; +esac + +# be nauseatingly ANSI +case "$cc" in +*gcc*) ccflags="$ccflags -ansi" + ;; +*) ccflags="$ccflags -std" + ;; +esac + +# for gcc the Configure knows about the -fpic: +# position-independent code for dynamic loading + +# we want optimisation + +case "$optimize" in +'') case "$cc" in + *gcc*) + optimize='-O3' ;; + *) case "$_DEC_cc_style" in + new) optimize='-O4' + ccflags="$ccflags -fprm d -ieee" + ;; + old) optimize='-O2 -Olimit 3200' ;; + esac + ccflags="$ccflags -D_INTRINSICS" + ;; + esac + ;; +esac + +# Make glibpth agree with the compiler suite. Note that /shlib +# is not here. That's on purpose. Even though that's where libc +# really lives from V4.0 on, the linker (and /sbin/loader) won't +# look there by default. The sharable /sbin utilities were all +# built with "-Wl,-rpath,/shlib" to get around that. This makes +# no attempt to figure out the additional location(s) searched by +# gcc, since not all versions of gcc are easily coerced into +# revealing that information. +glibpth="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc" +glibpth="$glibpth /usr/lib /usr/local/lib /var/shlib" + +# dlopen() is in libc +libswanted="`echo $libswanted | sed -e 's/ dl / /'`" + +# libPW contains nothing useful for perl +libswanted="`echo $libswanted | sed -e 's/ PW / /'`" + +# libnet contains nothing useful for perl here, and doesn't work +libswanted="`echo $libswanted | sed -e 's/ net / /'`" + +# libbsd contains nothing used by perl that is not already in libc +libswanted="`echo $libswanted | sed -e 's/ bsd / /'`" + +# libc need not be separately listed +libswanted="`echo $libswanted | sed -e 's/ c / /'`" + +# ndbm is already in libc +libswanted="`echo $libswanted | sed -e 's/ ndbm / /'`" + +# the basic lddlflags used always +lddlflags='-shared -expect_unresolved "*"' + +# Fancy compiler suites use optimising linker as well as compiler. +# <spider@Orb.Nashua.NH.US> +case "$_DEC_uname_r" in +*[123].*) # old loader + lddlflags="$lddlflags -O3" + ;; +*) lddlflags="$lddlflags $optimize -msym" + # -msym: If using a sufficiently recent /sbin/loader, + # keep the module symbols with the modules. + ;; +esac +# Yes, the above loses if gcc does not use the system linker. +# If that happens, let me know about it. <jhi@iki.fi> + + +# If debugging or (old systems and doing shared) +# then do not strip the lib, otherwise, strip. +# As noted above the -DDEBUGGING is added automagically by Configure if -g. +case "$optimize" in + *-g*) ;; # left intentionally blank +*) case "$_DEC_uname_r" in + *[123].*) + case "$useshrplib" in + false|undef|'') lddlflags="$lddlflags -s" ;; + esac + ;; + *) lddlflags="$lddlflags -s" + ;; + esac + ;; +esac + +if [ "X$usethreads" = "X$define" ]; then + # Threads interfaces changed with V4.0. + case "$_DEC_uname_r" in + *[123].*) libswanted="$libswanted pthreads mach exc c_r" + ccflags="-threads $ccflags" + ;; + *) libswanted="$libswanted pthread exc" + ccflags="-pthread $ccflags" + ;; + esac + usemymalloc='n' +fi + +# +# Make embedding in things like INN and Apache more memory friendly. +# Keep it overridable on the Configure command line, though, so that +# "-Uuseshrplib" prevents this default. +# + +# This or the glibpth change above breaks the build. Commented out +# for this snapshot. +#case "$_DEC_cc_style.$useshrplib" in +# new.) useshrplib="$define" ;; +#esac + +# +# Unset temporary variables no more needed. +# + +unset _DEC_cc_style +unset _DEC_uname_r + +# +# History: +# +# perl5.004_57: +# +# 19-Dec-1997 Spider Boardman <spider@Orb.Nashua.NH.US> +# +# * Newer Digial UNIX compilers enforce signaling for NaN without +# -ieee. Added -fprm d at the same time since it's friendlier for +# embedding. +# +# * Fixed the library search path to match cc, ld, and /sbin/loader. +# +# * Default to building -Duseshrplib on newer systems. -Uuseshrplib +# still overrides. +# +# * Fix -pthread additions for useshrplib. ld has no -pthread option. +# +# +# perl5.004_04: +# +# 19-Sep-1997 Spider Boardman <spider@Orb.Nashua.NH.US> +# +# * libnet on Digital UNIX is for JAVA, not for sockets. +# +# +# perl5.003_28: +# +# 22-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi> +# +# * Restructuring Spider's suggestions. +# +# * Older Digital UNIXes cannot handle -Olimit ... for $lddlflags. +# +# * ld -s cannot be used in older Digital UNIXes when doing shared. +# +# +# 21-Feb-1997 Spider Boardman <spider@Orb.Nashua.NH.US> +# +# * -hidden removed. +# +# * -DSTANDARD_C removed. +# +# * -D_INTRINSICS added. (that -fast does not seem to buy much confirmed) +# +# * odbm not in libc, only ndbm. Therefore dbm back to $libswanted. +# +# * -msym for the newer runtime loaders. +# +# * $optimize also in $lddflags. +# +# +# perl5.003_27: +# +# 18-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi> +# +# * unset _DEC_cc_style and more commentary on -std. +# +# +# perl5.003_26: +# +# 15-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi> +# +# * -std and -ansi. +# +# +# perl5.003_24: +# +# 30-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi> +# +# * Fixing the note on -DDEBUGGING. +# +# * Note on -O5 -fast. +# +# +# perl5.003_23: +# +# 26-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi> +# +# * Notes on how to do both optimisation and debugging. +# +# +# 25-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi> +# +# * Remove unneeded libraries from $libswanted: PW, bsd, c, dbm +# +# * Restructure the $lddlflags build. +# +# * $optimize based on which compiler we have. +# +# +# perl5.003_22: +# +# 23-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> +# +# * Added comments 'how to create a debugging version of perl' +# +# * Fixed logic of this script to prevent stripping of shared +# objects by the loader (see ld man page for -s) is debugging +# is set via the -g switch. +# +# +# 21-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> +# +# * now 'dl' is always removed from libswanted. Not only if +# optimize is an empty string. +# +# +# 17-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> +# +# * Removed 'dl' from libswanted: When the FreePort binary +# translator for Sun binaries is installed Configure concludes +# that it should use libdl.x.yz.fpx.so :-( +# Because the dlopen, dlclose,... calls are in the +# C library it not necessary at all to check for the +# dl library. Therefore dl is removed from libswanted. +# +# +# 1-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> +# +# * Set -Olimit to 3200 because perl_yylex.c got too big +# for the optimizer. +# |
