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-Type "make" to check the validity of the f2c source and compile f2c.
-
-On a PC, you may need to compile xsum.c with -DMSDOS (i.e., with
-MSDOS #defined). If your system does not understand ANSI/ISO C
-syntax (i.e., if you have a K&R C compiler), compile xsum.c with
--DKR_headers. (Eventually this will also be required of the f2c
-source proper.)
-
-On non-Unix systems where files have separate binary and text modes,
-you may need to "make xsumr.out" rather than "make xsum.out".
-
-If (in accordance with what follows) you need to modify the makefile
-or any of the source files, first issue a "make xsum.out" (or, if
-appropriate, "make xsumr.out") to check the validity of the f2c source,
-then make your changes, then type "make f2c".
-
-The file usignal.h is for the benefit of strictly ANSI include files
-on a UNIX system -- the ANSI signal.h does not define SIGHUP or SIGQUIT.
-You may need to modify usignal.h if you are not running f2c on a UNIX
-system.
-
-Should you get the message "xsum0.out xsum1.out differ", see what lines
-are different (`diff xsum0.out xsum1.out`) and ask netlib to send you
-the files in question "from f2c/src". For example, if exec.c and
-expr.c have incorrect check sums, you would send netlib the message
- send exec.c expr.c from f2c/src
-
-On some systems, the malloc and free in malloc.c let f2c run faster
-than do the standard malloc and free. Other systems cannot tolerate
-redefinition of malloc and free. If yours is such a system, you may
-either modify the makefile appropriately, or simply execute
- cc -c -DCRAY malloc.c
-before typing "make". Still other systems have a -lmalloc that
-provides performance competitive with that from malloc.c; you may
-wish to compare the two on your system.
-
-On some BSD systems, you may need to create a file named "string.h"
-whose single line is
-#include <strings.h>
-you may need to add " -Dstrchr=index" to the "CFLAGS =" assignment
-in the makefile, and you may need to add " memset.o" to the "OBJECTS ="
-assignment in the makefile -- see the comments in memset.c .
-
-For non-UNIX systems, you may need to change some things in sysdep.c,
-such as the choice of intermediate file names.
-
-On some systems, you may need to modify parts of sysdep.h (which is
-included by defs.h). In particular, for Sun 4.1 systems and perhaps
-some others, you need to comment out the typedef of size_t. For some
-systems (e.g., IRIX 4.0.1 and AIX) it is better to add
-#define ANSI_Libraries
-to the beginning of sysdep.h (or to supply -DANSI_Libraries in the
-makefile).
-
-Alas, some systems #define __STDC__ but do not provide a true standard
-(ANSI or ISO) C environment, e.g. do not provide stdlib.h . If yours
-is such a system, then (a) you should complain loudly to your vendor
-about __STDC__ being erroneously defined, and (b) you should insert
-#undef __STDC__
-at the beginning of sysdep.h . You may need to make other adjustments.
-
-For some non-ANSI versions of stdio, you must change the values given
-to binread and binwrite in sysdep.c from "rb" and "wb" to "r" and "w".
-You may need to make this change if you run f2c and get an error
-message of the form
- Compiler error ... cannot open intermediate file ...
-
-On many systems, it is best to combine libF77 and libI77 into a single
-library, say libf2c, as suggested in "readme from f2c". If you do this,
-then you should adjust the definition of link_msg in sysdep.c
-appropriately (e.g., replacing "-lF77 -lI77" by "-lf2c").
-
-Some older C compilers object to
- typedef void (*foo)();
-or to
- typedef void zap;
- zap (*foo)();
-If yours is such a compiler, change the definition of VOID in
-f2c.h from void to int.
-
-For convenience with systems that use control-Z to denote end-of-file,
-f2c treats control-Z characters (ASCII 26, '\x1a') that appear at the
-beginning of a line as an end-of-file indicator. You can disable this
-test by compiling lex.c with NO_EOF_CHAR_CHECK #defined, or can
-change control-Z to some other character by #defining EOF_CHAR to
-be the desired value.
-
-Please send bug reports to dmg@research.att.com . The old index file
-(now called "readme" due to unfortunate changes in netlib conventions:
-"send readme from f2c") will report recent changes in the recent-change
-log at its end; all changes will be shown in the "changes" file
-("send changes from f2c"). To keep current source, you will need to
-request xsum0.out and version.c, in addition to the changed source
-files.
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