[gccgo] Use AC_C_BIGENDIAN rather than <endian.h>

[gccgo] Use AC_C_BIGENDIAN rather than <endian.h>

[Ian Lance Taylor]

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I committed this patch to the gccgo branch to use the AC_C_BIGENDIAN
configure test rather than assume that the system provides <endian.h>.

Ian



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Index: runtime/go-reflect-chan.c
===================================================================
--- runtime/go-reflect-chan.c	(revision 154387)
+++ runtime/go-reflect-chan.c	(working copy)
@@ -6,8 +6,8 @@
 
 #include <stdlib.h>
 #include <stdint.h>
-#include <endian.h>
 
+#include "config.h"
 #include "go-type.h"
 #include "channel.h"
 
@@ -40,7 +40,7 @@ chansend (unsigned char *ch, unsigned ch
       } u;
 
       __builtin_memset (u.b, 0, sizeof (uint64_t));
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#ifndef WORDS_BIGENDIAN
       __builtin_memcpy (u.b, val, channel->element_size);
 #else
       __builtin_memcpy (u.b + sizeof (uint64_t) - channel->element_size, val,
@@ -89,7 +89,7 @@ chanrecv (unsigned char *ch, unsigned ch
 	  u.v = s.__val;
 	}
 
-#if __BYTE_ORDER == __LITTLE_ENDIAN
+#ifndef WORDS_BIGENDIAN
       __builtin_memcpy (val, u.b, channel->element_size);
 #else
       __builtin_memcpy (val, u.b + sizeof (uint64_t) - channel->element_size,
Index: configure.ac
===================================================================
--- configure.ac	(revision 154445)
+++ configure.ac	(working copy)
@@ -6,7 +6,7 @@
 
 # Process this file with autoreconf to produce configure.
 
-AC_PREREQ(2.59)
+AC_PREREQ(2.64)
 AC_INIT(package-unused, version-unused,, libgo)
 AC_CONFIG_SRCDIR(Makefile.am)
 AC_CONFIG_HEADER(config.h)
@@ -159,6 +159,8 @@ else
 fi
 AC_SUBST(SPLIT_STACK)
 
+AC_C_BIGENDIAN
+
 AC_CACHE_SAVE
 
 if test ${multilib} = yes; then