1 files changed, 62 insertions, 0 deletions
diff --git a/builtins/endianness b/builtins/endianness
new file mode 100755
index 0000000..fb7d76e
--- /dev/null
+++ b/builtins/endianness
@@ -0,0 +1,62 @@
+#!/bin/sh
+
+############################################################
+# Copyright (c) 2009 by Aleksey Cheusov
+#
+# See LICENSE file in the distribution.
+############################################################
+
+set -e
+
+LC_ALL=C
+export LC_ALL
+
+##################################################
+
+pathpart=endianness
+. mkc_check_common.sh
+
+trap "rm -f $tmpc $tmpo" 0
+
+CFLAGS="$CFLAGS -D_GNU_SOURCE -D_ALL_SOURCE"
+
+check_me (){
+	cat > "$tmpc" <<EOF
+$3
+
+int main (int argc, char **argv)
+{
+  #if $1 == $2
+   return 0;
+#else
+   error
+#endif
+}
+EOF
+	if $CC -o "$tmpo" -c $CFLAGS $CPPFLAGS "$tmpc" 2>/dev/null; then
+		return 0
+	else
+		return 1
+	fi
+}
+
+if check_me BYTE_ORDER LITTLE_ENDIAN '
+#include <sys/types.h>
+#include <sys/param.h>
+';
+then
+    echo little
+    exit 0
+fi
+
+if check_me BYTE_ORDER BIG_ENDIAN '
+#include <sys/types.h>
+#include <sys/param.h>
+';
+then
+    echo big
+    exit 0
+fi
+
+echo unknown
+exit 0