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comparison src/prefix-args.c @ 0:376386a54a3c r19-14

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Import from CVS: tag r19-14
author cvs
date Mon, 13 Aug 2007 08:45:50 +0200
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1 /* prefix-args.c - echo each argument, prefixed by a string.
2 Jim Blandy <jimb@occs.cs.oberlin.edu> - September 1992
3
4 When using GCC 2 as the linker in the build process, options
5 intended for the linker need to be prefixed with the "-Xlinker"
6 option. If an option takes an argument, we need to use -Xlinker
7 twice - once for the option and once for its argument. For
8 example, to run the linker with the options "-Bstatic" "-e"
9 "_start", you'd need to pass the following options to GCC:
10
11 -Xlinker -Bstatic -Xlinker -e -Xlinker _start.
12
13 The Emacs makefile used to use a Bourne Shell `for' loop to prefix
14 each linker option with "-Xlinker", but 1) the for loop was hairier
15 than one might hope because it had to work when there were no
16 arguments to pass to the linker - the shell barfs on a loop like
17 this:
18
19 for arg in ; do echo -Xlinker "$arg"; done
20
21 and 2) the whole compilation command containing this loop seems to
22 exit with a non-zero status and halt the build under Ultrix.
23
24 If I can't write a completely portable program to do this in C,
25 I'm quitting and taking up gardening. */
26
27 /* Synched up with: FSF 19.30. */
28
29 #include <stdio.h>
30 #include <stdlib.h>
31
32 void
33 main (int argc, char **argv)
34 {
35 char *progname;
36 char *prefix;
37
38 progname = argv[0];
39 argc--, argv++;
40
41 if (argc < 1)
42 {
43 fprintf (stderr, "Usage: %s PREFIX ARGS...\n"
44 "Echo each ARG preceded by PREFIX and a space.\n", progname);
45 exit (2);
46 }
47
48 prefix = argv[0];
49 argc--, argv++;
50
51 for (; argc > 0; argc--, argv++)
52 printf ("%s %s%c", prefix, argv[0], (argc > 1) ? ' ' : '\n');
53
54 exit (0);
55 }