[nfc] define POINTSET_API instead of redefining extern

diff --git a/lib/common/pointset.h b/lib/common/pointset.h
index 4d275f44fe07768c90a02a8afc5da6be76dddb42..8e8d49b4a0196a4f97ab127cacfbe88efcaf3488 100644 (file)
--- a/lib/common/pointset.h
+++ b/lib/common/pointset.h
@@ -21,36 +21,39 @@ extern "C" {
     typedef Dict_t PointSet;
     typedef Dict_t PointMap;
 #ifdef GVDLL
-#define extern __declspec(dllexport)
+#define POINTSET_API __declspec(dllexport)
 #else
-#define extern
+#define POINTSET_API
 #endif
 
 /*visual studio*/
 #ifdef _WIN32
 #ifndef GVC_EXPORTS
-#undef extern
-#define extern __declspec(dllimport)
+#undef POINTSET_API
+#define POINTSET_API __declspec(dllimport)
 #endif
 #endif
 /*end visual studio*/
+#ifndef POINTSET_API
+#define POINTSET_API extern
+#endif
 
-       extern PointSet *newPS(void);
-    extern void freePS(PointSet *);
-    extern void insertPS(PointSet *, point);
-    extern void addPS(PointSet *, int, int);
-    extern int inPS(PointSet *, point);
-    extern int isInPS(PointSet *, int, int);
-    extern int sizeOf(PointSet *);
-    extern point *pointsOf(PointSet *);
-
-    extern PointMap *newPM(void);
-    extern void clearPM(PointMap *);
-    extern void freePM(PointMap *);
-    extern int insertPM(PointMap *, int, int, int);
-    extern int updatePM(PointMap * pm, int x, int y, int v);
-
-#undef extern
+       POINTSET_API PointSet *newPS(void);
+    POINTSET_API void freePS(PointSet *);
+    POINTSET_API void insertPS(PointSet *, point);
+    POINTSET_API void addPS(PointSet *, int, int);
+    POINTSET_API int inPS(PointSet *, point);
+    POINTSET_API int isInPS(PointSet *, int, int);
+    POINTSET_API int sizeOf(PointSet *);
+    POINTSET_API point *pointsOf(PointSet *);
+
+    POINTSET_API PointMap *newPM(void);
+    POINTSET_API void clearPM(PointMap *);
+    POINTSET_API void freePM(PointMap *);
+    POINTSET_API int insertPM(PointMap *, int, int, int);
+    POINTSET_API int updatePM(PointMap * pm, int x, int y, int v);
+
+#undef POINTSET_API
 #ifdef __cplusplus
 }
 #endif