X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=jmorecfg.h;h=565f13ef3da024c359891f41da6fae924fc198ae;hb=c2de1e452e66ca7ea3d83f44187562faa330a439;hp=54a7d1c447e4ed862caf5a905b0275efcf3629ef;hpb=e7efa7d39fcacfbb0ce001d546606070a7b17e14;p=ext%2Flibjpeg.git

diff --git a/jmorecfg.h b/jmorecfg.h
index 54a7d1c..565f13e 100644
--- a/jmorecfg.h
+++ b/jmorecfg.h
@@ -180,14 +180,28 @@ typedef unsigned int JDIMENSION;
  * or code profilers that require it.
  */
 
+#if defined(_WIN32)
+#if defined(JPEG_BUILD)
+#define LIBJPEG_API __declspec(dllexport)
+#elif defined(LIBJPEG_IMPORT)
+#define LIBJPEG_API __declspec(dllimport)
+#else
+#define LIBJPEG_API
+#endif
+#elif defined(__GNUC__)
+#define LIBJPEG_API __attribute__((visibility("default")))
+#else
+#define LIBJPEG_API
+#endif
+
 /* a function called through method pointers: */
 #define METHODDEF(type)		static type
 /* a function used only in its module: */
 #define LOCAL(type)		static type
 /* a function referenced thru EXTERNs: */
-#define GLOBAL(type)		type
+#define GLOBAL(type)		LIBJPEG_API type
 /* a reference to a GLOBAL function: */
-#define EXTERN(type)		extern type
+#define EXTERN(type)		LIBJPEG_API extern type
 
 
 /* This macro is used to declare a "method", that is, a function pointer.