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dnl ---------------------------------------------
dnl Check for GNU getopt_long()
dnl ---------------------------------------------
AC_DEFUN([AC_GETOPT_LONG], [
AC_MSG_CHECKING(for GNU getopt_long)
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
static struct option long_options[] = {
{"help" , no_argument, 0, 1 },
{"version" , no_argument, 0, 2 },
{0 , no_argument, 0, 0 }
};
int main (int argc, char **argv) {
int option_index = 0;
int c;
opterr = 0;
while ((c = getopt_long (argc, argv, "?hv",
long_options, &option_index)) != EOF)
;
return 0;
}
]])],
[AC_MSG_RESULT(yes);
ac_getopt_long=yes;
AC_DEFINE(HAVE_GETOPT_LONG,,[Define this if you have GNU getopt_long() implemented])],
[AC_MSG_RESULT(no); ac_getopt_long=no],
[AC_MSG_RESULT(no); ac_getopt_long=no])
AM_CONDITIONAL(HAVE_GETOPT_LONG, test x"$ac_getopt_long" = "xyes")
])
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