X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=include%2Fwimlib%2Fcompiler-gcc.h;h=cb42c894800e668bf24c4098fa567a97f4e84121;hp=db6e3249b68ee92d06335bb02bb4a73460907198;hb=af795d1f88e9d8f1fad0613eac93c6775b4f6735;hpb=0ecb0529b5fcacc1abafa1f3f02a40c44783ada8

diff --git a/include/wimlib/compiler-gcc.h b/include/wimlib/compiler-gcc.h
index db6e3249..cb42c894 100644
--- a/include/wimlib/compiler-gcc.h
+++ b/include/wimlib/compiler-gcc.h
@@ -25,8 +25,19 @@
 #endif
 #define _malloc_attribute	__attribute__((malloc))
 #define inline			inline __attribute__((always_inline))
+#define noinline		__attribute__((noinline))
 
-#define CPU_IS_BIG_ENDIAN	(__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
+/* Newer gcc supports __BYTE_ORDER__.  Older gcc doesn't.  */
+#ifdef __BYTE_ORDER__
+#  define CPU_IS_BIG_ENDIAN	(__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
+#elif defined(HAVE_CONFIG_H)
+#  include "config.h"
+#  ifdef WORDS_BIGENDIAN
+#    define CPU_IS_BIG_ENDIAN 1
+#  else
+#    define CPU_IS_BIG_ENDIAN 0
+#  endif
+#endif
 
 #if defined(__x86_64__) || defined(__i386__)
 #  define UNALIGNED_ACCESS_SPEED 3