trunk/multiarch-wrapper/multiarch-wrapper.c

#define _GNU_SOURCE

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

#ifndef DEF_SUFFIX
#  define DEF_SUFFIX "64"
#endif

int main(int argc, char **argv)
{
  char *filename;
  char *suffix;

  if(!(suffix = getenv("USE_ARCH")))
    if(!(suffix = getenv("BUILDENV")))
      suffix = DEF_SUFFIX;

  if (asprintf(&filename, "%s-%s", argv[0], suffix) < 0) {
    perror(argv[0]);
    return -1;
  }

  int status = EXIT_FAILURE;
  pid_t pid = fork();

  if (pid == 0) {
    execvp(filename, argv);
    perror(filename);
    goto end;
  } else if (pid < 0) {
    goto end_error;
  } else {
    if (waitpid(pid, &status, 0) != pid) {
      status = EXIT_FAILURE;
      goto end_error;
    }
    status = WEXITSTATUS(status);
  }
  goto end;

end_error:
  perror(argv[0]);
end:
  free(filename);

  return status;
}


1	#define _GNU_SOURCE
2
3	#include <errno.h>
4	#include <stdio.h>
5	#include <stdlib.h>
6	#include <sys/types.h>
7	#include <sys/wait.h>
8	#include <unistd.h>
9
10	#ifndef DEF_SUFFIX
11	# define DEF_SUFFIX "64"
12	#endif
13
14	int main(int argc, char **argv)
15	{
16	char *filename;
17	char *suffix;
18
19	if(!(suffix = getenv("USE_ARCH")))
20	if(!(suffix = getenv("BUILDENV")))
21	suffix = DEF_SUFFIX;
22
23	if (asprintf(&filename, "%s-%s", argv[0], suffix) < 0) {
24	perror(argv[0]);
25	return -1;
26	}
27
28	int status = EXIT_FAILURE;
29	pid_t pid = fork();
30
31	if (pid == 0) {
32	execvp(filename, argv);
33	perror(filename);
34	goto end;
35	} else if (pid < 0) {
36	goto end_error;
37	} else {
38	if (waitpid(pid, &status, 0) != pid) {
39	status = EXIT_FAILURE;
40	goto end_error;
41	}
42	status = WEXITSTATUS(status);
43	}
44	goto end;
45
46	end_error:
47	perror(argv[0]);
48	end:
49	free(filename);
50
51	return status;
52	}
53
54