Updates for the new building code on MinGW

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/libobjc/trunk@20818 72102866-910b-0410-8b05-ffd578937521

ChangeLog.GNUstep

@@ -1,3 +1,8 @@
+2005-03-01 Nicola Pero <n.pero@mi.flashnet.it>
+
+	* objc/objc-decls.h: On MinGW, do not use
+	dllexport.
+
 2004-02-17  Adam Fedor  <fedor@gnu.org>
 
 	* GNUmakefile: Add defs for darwin.

objc/objc-decls.h

@@ -6,8 +6,17 @@
 #ifdef GNUSTEP_WITH_DLL
 
 #if BUILD_libobjc_DLL
+#
+# if defined(__MINGW32__)
+  /* On Mingw, the compiler will export all symbols automatically, so
+   * __declspec(dllexport) is not needed.
+   */
+#  define objc_EXPORT  extern
+#  define objc_DECLARE 
+# else
 #  define objc_EXPORT  __declspec(dllexport)
 #  define objc_DECLARE __declspec(dllexport)
+# endif
 #else
 #  define objc_EXPORT  extern __declspec(dllimport)
 #  define objc_DECLARE extern __declspec(dllimport)