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the vernerable fortran to c compiler, mirror of netlib packed in repo, w/ debian packaging scripts
This project forked from barak/f2c
the vernerable fortran to c compiler, mirror of netlib packed in repo, w/ debian packaging scripts
To compile f2c on Linux or Unix systems, copy makefile.u to makefile, edit makefile if necessary (see the comments in it and below) and type "make" (or maybe "nmake", depending on your system). To compile f2c.exe on MS Windows systems with Microsoft Visual C++, copy makefile.vc makefile nmake With other PC compilers, you may need to compile xsum.c with -DMSDOS (i.e., with MSDOS #defined). If your compiler does not understand ANSI/ISO C syntax (i.e., if you have a K&R C compiler), compile with -DKR_headers . 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 any of the source files (excluding the makefile), 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 (e.g., [email protected]) to send you the files in question, plus the current xsum0.out (which may have changed) "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 xsum0.out from f2c/src You can also ftp these files from netlib.bell-labs.com; for more details, ask [email protected] to "send readme from f2c". On some systems, the malloc and free in malloc.c let f2c run faster than do the standard malloc and free. Other systems may not tolerate redefinition of malloc and free (though changes of 8 Nov. 1994 may render this less of a problem than hitherto). If your system permits use of a user-supplied malloc, you may wish to change the MALLOC = line in the makefile to "MALLOC = malloc.o", or to type make MALLOC=malloc.o instead of 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. If your system does not permit user-supplied malloc routines, then f2c may fault with "MALLOC=malloc.o", or may display other untoward behavior. 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 ... In the days of yore, two libraries, libF77 and libI77, were used with f77 (the Fortran compiler on which f2c is based). Separate source for these libraries is still available from netlib, but it is more convenient to combine them into a single library, libf2c. Source for this combined library is also available from netlib in f2c/libf2c.zip, e.g., http://netlib.bell-labs.com/netlib/f2c/libf2c.zip or http://www.netlib.org/f2c/libf2c.zip (and similarly for other netlib mirrors). After unzipping libf2c.zip, copy the relevant makefile.* to makefile, edit makefile if necessary (see the comments in it and in libf2c/README) and invoke "make" or "nmake". The resulting library is called *f2c.lib on MS Windows systems and libf2c.a or libf2c.so on Linux and Unix systems; makefile.u just shows how to make libf2c.a. Details on creating the shared-library variant, libf2c.so, are system-dependent; some that have worked under Linux appear below. For some other systems, you can glean the details from the system-dependent makefile variants in directory http://www.netlib.org/ampl/solvers/funclink or http://netlib.bell-labs.com/netlib/ampl/solvers/funclink, etc. In general, under Linux it is necessary to compile libf2c (or libI77) with -DNON_UNIX_STDIO . Under at least one variant of Linux, you can make and install a shared-library version of libf2c by compiling libI77 with -DNON_UNIX_STDIO, creating libf2c.a as above, and then executing mkdir t ln lib?77/*.o t cd t; cc -shared -o ../libf2c.so -Wl,-soname,libf2c.so.1 *.o cd .. rm -r t rm /usr/lib/libf2c* mv libf2c.a libf2c.so /usr/lib cd /usr/lib ln libf2c.so libf2c.so.1 ln libf2c.so libf2c.so.1.0.0 On some other systems, /usr/local/lib is the appropriate installation directory. 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. If your machine has IEEE, VAX, or IBM-mainframe arithmetic, but your printf is inaccurate (e.g., with Symantec C++ version 6.0, printf("%.17g",12.) prints 12.000000000000001), you can make f2c print correctly rounded numbers by compiling with -DUSE_DTOA and adding dtoa.o g_fmt.o to the makefile's OBJECTS = line, so it becomes OBJECTS = $(OBJECTSd) malloc.o dtoa.o g_fmt.o Also add the rule dtoa.o: dtoa.c $(CC) -c $(CFLAGS) -DMALLOC=ckalloc -DIEEE... dtoa.c (without the initial tab) to the makefile, where IEEE... is one of IEEE_MC68k, IEEE_8087, VAX, or IBM, depending on your machine's arithmetic. See the comments near the start of dtoa.c. The relevant source files, dtoa.c and g_fmt.c, are available separately from netlib's fp directory. For example, you could send the E-mail message send dtoa.c g_fmt.c from fp to [email protected] (or use anonymous ftp from ftp.netlib.org and look in directory /netlib/fp). The makefile has a rule for creating tokdefs.h. If you cannot use the makefile, an alternative is to extract tokdefs.h from the beginning of gram.c: it's the first 100 lines. File mem.c has #ifdef CRAY lines that are appropriate for machines with the conventional CRAY architecture, but not for "Cray" machines based on DEC Alpha chips, such as the T3E; on such machines, you may need to make a suitable adjustment, e.g., add #undef CRAY to sysdep.h. Please send bug reports to dmg at acm.org (with " at " changed to "@"). 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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