X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=sdccconf_in.h;h=cd08da4a9ce3afb0e5ee28ad79705a445f6736cf;hb=5a1d5e778e85664f4e6657019348b4756b16eacb;hp=4c6511561bbdf7b49704bcc7e06cbcd900dfd6b5;hpb=385e73259dae7053602559c58a6e7cf9972d13d3;p=fw%2Fsdcc

diff --git a/sdccconf_in.h b/sdccconf_in.h
index 4c651156..cd08da4a 100644
--- a/sdccconf_in.h
+++ b/sdccconf_in.h
@@ -54,7 +54,31 @@
 #undef TYPE_UWORD
 #undef TYPE_UDWORD
 
-#undef WORDS_BIGENDIAN
+/*
+ * find out the endianess of host machine
+ * in order to be able to make Mac OS X unified binaries
+ */
+/* This is tricky since these might be defined with a blank replacement list */
+/* such as on SPARC Solaris. However, configure gets it right, so it's ok */
+/* that (_BIG_ENDIAN+0) is false, even though it is defined. */
+#if (__BIG_ENDIAN__+0) || (_BIG_ENDIAN+0)
+/* 1) trust the compiler */
+# define WORDS_BIGENDIAN 1
+#elif __LITTLE_ENDIAN__
+/* do nothing */
+#elif (defined BYTE_ORDER && defined BIG_ENDIAN && defined LITTLE_ENDIAN && BYTE_ORDER && BIG_ENDIAN && LITTLE_ENDIAN)
+/* 2) trust the header files */
+# if BYTE_ORDER == BIG_ENDIAN 
+#   define WORDS_BIGENDIAN 1
+# endif
+#else 
+/* 3) trust the configure; this actually doesn't work for unified Mac OS X binaries :-( */
+# undef BUILD_WORDS_BIGENDIAN
+# if (defined BUILD_WORDS_BIGENDIAN && BUILD_WORDS_BIGENDIAN)
+#   define WORDS_BIGENDIAN  1
+# endif
+/* 4) assume that host is a little endian machine */
+#endif
 
 #undef OPT_DISABLE_MCS51
 #undef OPT_DISABLE_GBZ80