getconf.tproj/progenv.gperf

   1 %{
   2 /*
   3  * Copyright is disclaimed as to the contents of this file.
   4  *
   5  * $FreeBSD: src/usr.bin/getconf/progenv.gperf,v 1.2 2003/08/22 17:32:07 markm Exp $
   6  */
   7
   8 #include <sys/types.h>
   9
  10 #include <string.h>
  11 #include <unistd.h>
  12
  13 #include "getconf.h"
  14
  15 /*
  16  * Override gperf's built-in external scope.
  17  */
  18 static const struct map *in_word_set(const char *str);
  19
  20 /*
  21  * The Standard seems a bit ambiguous over whether the POSIX_V6_*
  22  * are specified with or without a leading underscore, so we just
  23  * use both.
  24  */
  25 /*
  26  * The alt_path member gives the path containing another `getconf'
  27  * executable which was compiled using the specified programming
  28  * environment.  If it is NULL, the current executable is good enough.
  29  * If we ever support multiple environments, this table will need to
  30  * be updated.  (We cheat here and define the supported environments
  31  * statically.)
  32  */
  33 #if defined(__alpha__) || defined(__sparc64__)
  34 #define have_LP64_OFF64         NULL
  35 #endif
  36
  37 #if defined(__i386__) || defined(__powerpc__)
  38 #define have_ILP32_OFFBIG       NULL
  39 #endif
  40
  41 %}
  42 struct map { const char *name; const char *alt_path; int valid; };
  43 %%
  44 POSIX_V6_ILP32_OFF32, notdef
  45 POSIX_V6_ILP32_OFFBIG, have_ILP32_OFFBIG
  46 POSIX_V6_LP64_OFF64, have_LP64_OFF64
  47 POSIX_V6_LPBIG_OFFBIG, notdef
  48 _POSIX_V6_ILP32_OFF32, notdef
  49 _POSIX_V6_ILP32_OFFBIG, have_ILP32_OFFBIG
  50 _POSIX_V6_LP64_OFF64, have_LP64_OFF64
  51 _POSIX_V6_LPBIG_OFFBIG, notdef
  52 %%
  53 int
  54 find_progenv(const char *name, const char **alt_path)
  55 {
  56         const struct map *rv;
  57
  58         rv = in_word_set(name);
  59         if (rv != NULL) {
  60                 if (rv->valid) {
  61                         *alt_path = rv->alt_path;
  62                         return 1;
  63                 }
  64                 return -1;
  65         }
  66         return 0;
  67 }