freebsd-dev/usr.bin/getconf/progenv.gperf

%{
/*
 * Copyright is disclaimed as to the contents of this file.
 *
 * $FreeBSD$
 */

#include <sys/types.h>

#include <string.h>
#include <unistd.h>

#include "getconf.h"

/*
 * Override gperf's built-in external scope.
 */
static const struct map *in_word_set(const char *str);

/*
 * The Standard seems a bit ambiguous over whether the POSIX_V6_*
 * are specified with or without a leading underscore, so we just
 * use both.
 */
/*
 * The alt_path member gives the path containing another `getconf'
 * executable which was compiled using the specified programming
 * environment.  If it is NULL, the current executable is good enough.
 * If we ever support multiple environments, this table will need to
 * be updated.  (We cheat here and define the supported environments
 * statically.)
 */
#if defined(__alpha__) || defined(__sparc64__)
#define	have_LP64_OFF64		NULL
#endif

#if defined(__i386__) || defined(__powerpc__)
#define	have_ILP32_OFFBIG	NULL
#endif

%}
struct map { const char *name; const char *alt_path; int valid; };
%%
POSIX_V6_ILP32_OFF32, notdef
POSIX_V6_ILP32_OFFBIG, have_ILP32_OFFBIG
POSIX_V6_LP64_OFF64, have_LP64_OFF64
POSIX_V6_LPBIG_OFFBIG, notdef
_POSIX_V6_ILP32_OFF32, notdef
_POSIX_V6_ILP32_OFFBIG, have_ILP32_OFFBIG
_POSIX_V6_LP64_OFF64, have_LP64_OFF64
_POSIX_V6_LPBIG_OFFBIG, notdef
%%
int
find_progenv(const char *name, const char **alt_path)
{
	const struct map *rv;

	rv = in_word_set(name);
	if (rv != NULL) {
		if (rv->valid) {
			*alt_path = rv->alt_path;
			return 1;
		}
		return -1;
	}
	return 0;
}