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dnl
dnl AC_PROG_GPERF (MINIMUM-VERSION)
dnl
dnl Check for availability of gperf.
dnl Abort if not found or if current version is not up to par.
dnl
AC_DEFUN([AC_PROG_GPERF],[
AC_PATH_PROG(GPERF, gperf, no)
if test "$GPERF" = no; then
AC_MSG_ERROR(Could not find gperf)
fi
min_gperf_version=ifelse([$1], ,2.7,$1)
AC_MSG_CHECKING(for gperf - version >= $min_gperf_version)
gperf_major_version=`$GPERF --version | \
sed 's/GNU gperf \([[0-9]]*\).\([[0-9]]*\)/\1/'`
gperf_minor_version=`$GPERF --version | \
sed 's/GNU gperf \([[0-9]]*\).\([[0-9]]*\)/\2/'`
no_gperf=""
dnl
dnl Now check if the installed gperf is sufficiently new.
dnl
AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static char*
my_strdup (char *str)
{
char *new_str;
if (str)
{
new_str = malloc ((strlen (str) + 1) * sizeof(char));
strcpy (new_str, str);
}
else
new_str = NULL;
return new_str;
}
int
main ()
{
char *tmp_version;
int major;
int minor;
/* HP/UX 9 (%@#!) writes to sscanf strings */
tmp_version = my_strdup("$min_gperf_version");
if (sscanf(tmp_version, "%d.%d", &major, &minor) != 2) {
printf ("%s, bad version string\n", "$min_gperf_version");
return 1;
}
if (($gperf_major_version > major) ||
(($gperf_major_version == major) && ($gperf_minor_version >= minor))) {
return 0;
} else {
printf ("\n");
printf ("*** An old version of gperf ($gperf_major_version.$gperf_minor_version) was found.\n");
printf ("*** You need a version of gperf newer than %d.%d.%d. The latest version of\n",
major, minor);
printf ("*** gperf is always available from ftp://ftp.gnu.org.\n");
printf ("***\n");
return 1;
}
}
],,no_gperf=yes,[/bin/true])
if test "x$no_gperf" = x ; then
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
])
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