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configure.ac: Check for qsort_r function before running the test program

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When cross compiling, test programs cannot be run. In order to make it
easier to cross compile for targets that do not have qsort_r(), check
for the function before trying to run the test program.

This avoid having to populate cache with glib_cv_have_qsort_r=no with
e.g. mingw cross compiler.

https://bugzilla.gnome.org/show_bug.cgi?id=651920
This commit is contained in:
Kalev Lember 2011-06-05 14:34:33 +03:00
parent 886a3499e1
commit 03441e406c
1 changed files with 31 additions and 28 deletions
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59
configure.ac
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@ -579,40 +579,43 @@ AC_HEADER_STDC
AC_FUNC_VPRINTF AC_FUNC_VPRINTF
AC_FUNC_ALLOCA AC_FUNC_ALLOCA
AC_CHECK_FUNCS(mmap posix_memalign memalign valloc fsync pipe2) AC_CHECK_FUNCS(mmap posix_memalign memalign valloc fsync pipe2)
AC_CHECK_FUNCS(atexit on_exit timegm gmtime_r) AC_CHECK_FUNCS(atexit on_exit timegm gmtime_r qsort_r)
# BSD has a qsort_r with wrong argument order # BSD has a qsort_r with wrong argument order
AC_CACHE_CHECK([for qsort_r], glib_cv_have_qsort_r, [ if test x$ac_cv_func_qsort_r = xyes ; then
AC_RUN_IFELSE([AC_LANG_SOURCE([[ AC_CACHE_CHECK([if qsort_r uses glibc compatible argument order], glib_cv_have_qsort_r, [
#define _GNU_SOURCE AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdlib.h> #define _GNU_SOURCE
#include <stdlib.h>
static int static int
cmp (const void *a, const void *b, void *c) cmp (const void *a, const void *b, void *c)
{ {
const int *ia = a; const int *ia = a;
const int *ib = b; const int *ib = b;
if (*ia < *ib) if (*ia < *ib)
return -1; return -1;
else if (*ia > *ib) else if (*ia > *ib)
return 1; return 1;
else else
return 0; return 0;
} }
int int
main (int argc, char **argv) main (int argc, char **argv)
{ {
int arr[3] = { 1, 2, 0 }; int arr[3] = { 1, 2, 0 };
int d = 3; int d = 3;
qsort_r (arr, 3, sizeof (int), cmp, &d); qsort_r (arr, 3, sizeof (int), cmp, &d);
if (arr[0] == 0 && arr[1] == 1 && arr[2] == 2) if (arr[0] == 0 && arr[1] == 1 && arr[2] == 2)
return 0; return 0;
else else
return 1; return 1;
}]])],[glib_cv_have_qsort_r=yes],[glib_cv_have_qsort_r=no])]) }]])],[glib_cv_have_qsort_r=yes],[glib_cv_have_qsort_r=no])])
fi
if test x$glib_cv_have_qsort_r = xyes ; then if test x$glib_cv_have_qsort_r = xyes ; then
AC_DEFINE(HAVE_QSORT_R, 1, [Define to 1 if you have the 'qsort_r' function]) AC_DEFINE(HAVE_QSORT_R, 1, [Define to 1 if you have the 'qsort_r' function])