Merge branch 'wip/lantw/check-getauxval-for-freebsd-12' into 'master'

gutils: Check whether getauxval function exists

See merge request GNOME/glib!423

configure.ac

@@ -862,6 +862,7 @@ AC_CHECK_FUNCS(getmntent_r setmntent endmntent hasmntopt getfsstat getvfsstat fa
 case $host_os in aix*) ac_cv_func_splice=no ;; esac # AIX splice() is something else
 AC_CHECK_FUNCS(splice)
 AC_CHECK_FUNCS(prlimit)
+AC_CHECK_FUNCS(getauxval)
 
 # To avoid finding a compatibility unusable statfs, which typically
 # successfully compiles, but warns to use the newer statvfs interface:

glib/gutils.c

@@ -2503,7 +2503,7 @@ const gchar *g_get_tmp_dir_utf8 (void) { return g_get_tmp_dir (); }
 gboolean
 g_check_setuid (void)
 {
-#if defined(HAVE_SYS_AUXV_H)
+#if defined(HAVE_SYS_AUXV_H) && defined(HAVE_GETAUXVAL) && defined(AT_SECURE)
   unsigned long value;
   int errsv;
 

meson.build

@@ -397,6 +397,7 @@ functions = [
   'fchown',
   'fdwalk',
   'fsync',
+  'getauxval',
   'getc_unlocked',
   'getfsstat',
   'getgrgid_r',