X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9c824f2977a2e8a502b0570c5301caa2a547833a..650ff63d999552a4758328444b22504077db998f:/src/jpeg/jmorecfg.h?ds=sidebyside

diff --git a/src/jpeg/jmorecfg.h b/src/jpeg/jmorecfg.h
index 5e9510042d..898c2570e9 100644
--- a/src/jpeg/jmorecfg.h
+++ b/src/jpeg/jmorecfg.h
@@ -157,15 +157,17 @@ typedef short INT16;
 
 /* INT32 must hold at least signed 32-bit values. */
 
-/* Modified JACS 23/4/99. 1200 means VC++ 6 */
-#if !defined(XMD_H) && !(_MSC_VER >= 1200) && !(__BORLANDC__ >= 0x550)  /* X11/xmd.h correctly defines INT32 */
-typedef long INT32;
-#endif
-
-/* Added JACS 23/4/99, to get INT32 definition */
-#if (_MSC_VER >= 1200) || (__BORLANDC__ >= 0x550)
-#include <windows.h>
-#endif
+/*
+    VZ: due to the horrible mess resulting in INT32 being defined in windows.h
+        for some compilers but not for the other ones, I have globally replace
+        INT32 with JPEG_INT32 in libjpeg code to avoid the eight level ifdef
+        which used to be here. The problem is that, of course, now we'll have
+        conflicts when upgrading to the next libjpeg release -- however
+        considering their frequency (1 in the last 5 years) it seems that
+        it is not too high a price to pay for the clean compilation with all
+        versions of mingw32 and cygwin
+ */
+typedef long JPEG_INT32;
 
 /* Datatype used for image dimensions.  The JPEG standard only supports
  * images up to 64K*64K due to 16-bit fields in SOF markers.  Therefore
@@ -186,25 +188,29 @@ typedef unsigned int JDIMENSION;
  * or code profilers that require it.
  */
 
-#if defined(__VISAGECPP__) /* need this for /common/imagjpeg.obj but not loclly */
-/* a function called through method pointers: */
-#define METHODDEF(type)		static type _Optlink
-/* a function used only in its module: */
-#define LOCAL(type)		static type _Optlink
-/* a function referenced thru EXTERNs: */
-#define GLOBAL(type)		type
-/* a reference to a GLOBAL function: */
-#define EXTERN(type)		extern type _Optlink
-#else
+#if defined(__VISAGECPP__)
+#define JPEG_CALLING_CONV _Optlink
+#else /* !Visual Age C++ */
+#define JPEG_CALLING_CONV
+#endif
+
+/* We can't declare a static function as extern "C" as we need to do in C++
+ * programs, so suppress static in METHODDEF when using C++.
+ */
+#if defined(__cplusplus)
+#define JPEG_METHOD_LINKAGE
+#else /* !__cplusplus */
+#define JPEG_METHOD_LINKAGE static
+#endif
+
 /* a function called through method pointers: */
-#define METHODDEF(type)		static type
+#define METHODDEF(type)		JPEG_METHOD_LINKAGE type JPEG_CALLING_CONV
 /* a function used only in its module: */
-#define LOCAL(type)		static type
+#define LOCAL(type)		static type JPEG_CALLING_CONV
 /* a function referenced thru EXTERNs: */
 #define GLOBAL(type)		type
 /* a reference to a GLOBAL function: */
-#define EXTERN(type)		extern type
-#endif
+#define EXTERN(type)		extern type JPEG_CALLING_CONV
 
 /* This macro is used to declare a "method", that is, a function pointer.
  * We want to supply prototype parameters if the compiler can cope.