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5303ab61 RS |
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 | #include <stdio.h> | |
28 | ||
dfcf069d | 29 | int |
5303ab61 RS |
30 | main (argc, argv) |
31 | int argc; | |
32 | char **argv; | |
33 | { | |
34 | char *progname; | |
35 | char *prefix; | |
36 | ||
37 | progname = argv[0]; | |
38 | argc--, argv++; | |
39 | ||
40 | if (argc < 1) | |
41 | { | |
42 | fprintf (stderr, "Usage: %s PREFIX ARGS...\n\ | |
43 | Echo each ARG preceded by PREFIX and a space.\n", progname); | |
44 | exit (2); | |
45 | } | |
46 | ||
47 | prefix = argv[0]; | |
48 | argc--, argv++; | |
49 | ||
50 | for (; argc > 0; argc--, argv++) | |
51 | printf ("%s %s%c", prefix, argv[0], (argc > 1) ? ' ' : '\n'); | |
52 | ||
53 | exit (0); | |
54 | } |