ceph/src/boost/tools/build/src/engine/boehm_gc/if_not_there.c

   1 /* Conditionally execute a command based if the file argv[1] doesn't exist */
   2 /* Except for execvp, we stick to ANSI C.                                  */
   3 # include "private/gcconfig.h"
   4 # include <stdio.h>
   5 # include <stdlib.h>
   6 # include <unistd.h>
   7 #ifdef __DJGPP__
   8 #include <dirent.h>
   9 #endif /* __DJGPP__ */
  10
  11 int main(int argc, char **argv, char **envp)
  12 {
  13     FILE * f;
  14 #ifdef __DJGPP__
  15     DIR * d;
  16 #endif /* __DJGPP__ */
  17     if (argc < 3) goto Usage;
  18     if ((f = fopen(argv[1], "rb")) != 0
  19         || (f = fopen(argv[1], "r")) != 0) {
  20         fclose(f);
  21         return(0);
  22     }
  23 #ifdef __DJGPP__
  24     if ((d = opendir(argv[1])) != 0) {
  25             closedir(d);
  26             return(0);
  27     }
  28 #endif
  29     printf("^^^^Starting command^^^^\n");
  30     fflush(stdout);
  31     execvp(argv[2], argv+2);
  32     exit(1);
  33
  34 Usage:
  35     fprintf(stderr, "Usage: %s file_name command\n", argv[0]);
  36     return(1);
  37 }
  38