cross/COMMON/buwrapper.c

   1 /*      $NetBSD: buwrapper.c,v 1.1 1999/01/04 22:37:30 tv Exp $ */
   2
   3 #include <err.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <sysexits.h>
   7 #include <unistd.h>
   8
   9 /*
  10  * Wrapper for binutils programs.
  11  *
  12  * This frontend sets the appropriate environment variables that tell
  13  * binutils programs which target will be used.
  14  */
  15
  16 static const char binsubdir[] = "libexec/binutils";
  17
  18 #define PATHLEN sizeof(PREFIX) + sizeof(binsubdir) + 20
  19
  20 int main(int argc, char **argv) {
  21         char path[PATHLEN], *p, *prog;
  22
  23         /* quickly find last part of path component */
  24         if (p = strrchr(argv[0], '/'))
  25                 p++;
  26         else
  27                 p = argv[0];
  28         if (prog = strrchr(p, '-'))
  29                 prog++;
  30         else
  31                 prog = p;
  32
  33         /* make program pathname */
  34         snprintf(path, PATHLEN, "%s/%s/%s", PREFIX, binsubdir, prog);
  35
  36         /* set up environment */
  37         setenv("GNUTARGET", GNUTARGET, 0);
  38 #ifdef LDEMULATION
  39         setenv("LDEMULATION", LDEMULATION, 0);
  40 #endif
  41 #ifdef LD_RPATH_LINK
  42         setenv("LD_RPATH_LINK", LD_RPATH_LINK, 1);
  43 #endif
  44
  45         /* run it! */
  46         execv(path, argv);
  47
  48         /* we shouldn't get here. */
  49         err(EX_OSERR, "(buwrapper): exec %s", path);
  50 }