pack: correct storage-class attribute declarations in pack.h

diff --git a/lib/pack/pack.h b/lib/pack/pack.h
index 6668c4bb1312301d846f5099d557c6e3b67e36e3..7a5163dda5c50e35d21d516b41acd4672766a784 100644 (file)
--- a/lib/pack/pack.h
+++ b/lib/pack/pack.h
@@ -51,15 +51,16 @@ typedef unsigned int packval_t;
        int flags;       
     } pack_info;
 
-/*visual studio*/
-#ifdef _WIN32
-#ifndef GVC_EXPORTS
+#ifdef GVDLL
+#ifdef GVC_EXPORTS
+#define PACK_API __declspec(dllexport)
+#else
 #define PACK_API __declspec(dllimport)
 #endif
 #endif
-/*end visual studio*/
+
 #ifndef PACK_API
-#define PACK_API extern
+#define PACK_API /* nothing */
 #endif
 
     PACK_API point *putRects(int ng, boxf* bbs, pack_info* pinfo);