Fix STR #2582 (Mac OS): The problem: under Mac OS, file config.h can be used with distinct

architectures when using configure --with-archflags option, thus file config.h should not contain
architecture-dependent definitions.
The fix: 1) don't use autoconf's endianness determination procedure because it can't give a result
that fits both big and little endian architectures.
2) have config.h include a mac-specific file under Mac OS.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@8511 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

configh.in

@@ -161,8 +161,12 @@
  *
  * Byte order of your machine: 1 = big-endian, 0 = little-endian.
  */
-
+ 
+#ifdef __APPLE__
+#include <mac_endianness.h>
+#else
 #define WORDS_BIGENDIAN 0
+#endif
 
 /*
  * U16, U32, U64:

configure.in

@@ -427,7 +427,9 @@ dnl this will only be used to compile resources for Windows .exe files
 AC_PATH_TOOL(RC,windres)
 
 dnl Architecture checks...
-AC_C_BIGENDIAN
+if test "$uname" != Darwin; then
+  AC_C_BIGENDIAN
+fi
 
 AC_CHECK_SIZEOF(short, 2)
 AC_CHECK_SIZEOF(int, 4)

mac_endianness.h

@@ -0,0 +1,38 @@
+/*
+ * "$Id$"
+ *
+ * Mac-specific configuration file for the Fast Light Tool Kit (FLTK).
+ *
+ * Copyright 1998-2011 by Bill Spitzak and others.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA.
+ *
+ * Please report all bugs and problems on the following page:
+ *
+ *     http://www.fltk.org/str.php
+ */
+ 
+#ifdef __APPLE__
+#  ifdef __BIG_ENDIAN__
+#    define WORDS_BIGENDIAN 1
+#  else
+#    define WORDS_BIGENDIAN 0
+#  endif
+#endif
+
+/*
+ * End of "$Id$".
+ */