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1.1 root 1: Type "make" to check the validity of the f2c source and compile f2c.
2:
3: On a PC, you may need to compile xsum.c with -DMSDOS (i.e., with
4: MSDOS #defined). If your system does not understand ANSI/ISO C
5: syntax (i.e., if you have a K&R C compiler), compile xsum.c with
6: -DKR_headers. (Eventually this will also be required of the f2c
7: source proper.)
8:
9: On non-Unix systems where files have separate binary and text modes,
10: you may need to "make xsumr.out" rather than "make xsum.out".
11:
12: If (in accordance with what follows) you need to modify the makefile
13: or any of the source files, first issue a "make xsum.out" (or, if
14: appropriate, "make xsumr.out") to check the validity of the f2c source,
15: then make your changes, then type "make f2c".
16:
17: The file usignal.h is for the benefit of strictly ANSI include files
18: on a UNIX system -- the ANSI signal.h does not define SIGHUP or SIGQUIT.
19: You may need to modify usignal.h if you are not running f2c on a UNIX
20: system.
21:
22: Should you get the message "xsum0.out xsum1.out differ", see what lines
23: are different (`diff xsum0.out xsum1.out`) and ask netlib to send you
24: the files in question "from f2c/src". For example, if exec.c and
25: expr.c have incorrect check sums, you would send netlib the message
26: send exec.c expr.c from f2c/src
27:
28: On some systems, the malloc and free in malloc.c let f2c run faster
29: than do the standard malloc and free. Other systems cannot tolerate
30: redefinition of malloc and free. If yours is such a system, you may
31: either modify the makefile appropriately, or simply execute
32: cc -c -DCRAY malloc.c
33: before typing "make". Still other systems have a -lmalloc that
34: provides performance competitive with that from malloc.c; you may
35: wish to compare the two on your system.
36:
37: On some BSD systems, you may need to create a file named "string.h"
38: whose single line is
39: #include <strings.h>
40: you may need to add " -Dstrchr=index" to the "CFLAGS =" assignment
41: in the makefile, and you may need to add " memset.o" to the "OBJECTS ="
42: assignment in the makefile -- see the comments in memset.c .
43:
44: For non-UNIX systems, you may need to change some things in sysdep.c,
45: such as the choice of intermediate file names.
46:
47: On some systems, you may need to modify parts of sysdep.h (which is
48: included by defs.h). In particular, for Sun 4.1 systems and perhaps
49: some others, you need to comment out the typedef of size_t. For some
50: systems (e.g., IRIX 4.0.1 and AIX) it is better to add
51: #define ANSI_Libraries
52: to the beginning of sysdep.h (or to supply -DANSI_Libraries in the
53: makefile).
54:
55: Alas, some systems #define __STDC__ but do not provide a true standard
56: (ANSI or ISO) C environment, e.g. do not provide stdlib.h . If yours
57: is such a system, then (a) you should complain loudly to your vendor
58: about __STDC__ being erroneously defined, and (b) you should insert
59: #undef __STDC__
60: at the beginning of sysdep.h . You may need to make other adjustments.
61:
62: For some non-ANSI versions of stdio, you must change the values given
63: to binread and binwrite in sysdep.c from "rb" and "wb" to "r" and "w".
64: You may need to make this change if you run f2c and get an error
65: message of the form
66: Compiler error ... cannot open intermediate file ...
67:
68: On many systems, it is best to combine libF77 and libI77 into a single
69: library, say libf2c, as suggested in "readme from f2c". If you do this,
70: then you should adjust the definition of link_msg in sysdep.c
71: appropriately (e.g., replacing "-lF77 -lI77" by "-lf2c").
72:
73: Some older C compilers object to
74: typedef void (*foo)();
75: or to
76: typedef void zap;
77: zap (*foo)();
78: If yours is such a compiler, change the definition of VOID in
79: f2c.h from void to int.
80:
81: For convenience with systems that use control-Z to denote end-of-file,
82: f2c treats control-Z characters (ASCII 26, '\x1a') that appear at the
83: beginning of a line as an end-of-file indicator. You can disable this
84: test by compiling lex.c with NO_EOF_CHAR_CHECK #defined, or can
85: change control-Z to some other character by #defining EOF_CHAR to
86: be the desired value.
87:
88: Please send bug reports to [email protected] . The old index file
89: (now called "readme" due to unfortunate changes in netlib conventions:
90: "send readme from f2c") will report recent changes in the recent-change
91: log at its end; all changes will be shown in the "changes" file
92: ("send changes from f2c"). To keep current source, you will need to
93: request xsum0.out and version.c, in addition to the changed source
94: files.
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