Better endianness test, because BSD

1 files changed, 16 insertions, 1 deletions

diff --git a/configure b/configure
index a8ee590..7a5e371 100755
--- a/configure
+++ b/configure
@@ -184,11 +184,24 @@ tryendianness () {
   if iscached endianness ; then return ; fi
   for i in endian.h sys/endian.h machine/endian.h ; do
     cat > "$tmpc" <<EOF
+#undef _POSIX_C_SOURCE
+#undef _XOPEN_SOURCE
+#ifndef _BSD_SOURCE
+#define _BSD_SOURCE
+#endif
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#ifndef _DEFAULT_SOURCE
+#define _DEFAULT_SOURCE
+#endif
 #include <$i>
 int a = 1 ;
 EOF
     if trybasic "$tmpc" ; then
       cat > "$tmpc" <<EOF
+#undef _POSIX_C_SOURCE
+#undef _XOPEN_SOURCE
 #ifndef _BSD_SOURCE
 #define _BSD_SOURCE
 #endif
@@ -203,10 +216,12 @@ int a = LITTLE_ENDIAN ;
 int b = BIG_ENDIAN ;
 int c = BYTE_ORDER ;
 EOF
-      trybasic "$tmpc" || exit 5
+      trybasic "$tmpc" || continue
       for j in little big pdp ; do
         k=`echo $j | tr a-z A-Z`
         cat > "$tmpc" <<EOF
+#undef _POSIX_C_SOURCE
+#undef _XOPEN_SOURCE
 #ifndef _BSD_SOURCE
 #define _BSD_SOURCE
 #endif