X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/384b8d9f3d9e239d5e639e406c4703a9ccbf8ad6..7bd30a12ade503fd135c686ecc98a6f6d5fecbeb:/include/wx/dlimpexp.h

diff --git a/include/wx/dlimpexp.h b/include/wx/dlimpexp.h
index 5d6c9e72a0..12e98fea54 100644
--- a/include/wx/dlimpexp.h
+++ b/include/wx/dlimpexp.h
@@ -22,14 +22,25 @@
 #elif defined(__WINDOWS__)
     /*
        __declspec works in BC++ 5 and later, Watcom C++ 11.0 and later as well
-       as VC++ and gcc
+       as VC++.
      */
-#    if defined(__VISUALC__) || defined(__BORLANDC__) || defined(__GNUC__) || defined(__WATCOMC__)
+#    if defined(__VISUALC__) || defined(__BORLANDC__) || defined(__WATCOMC__)
 #        define WXEXPORT __declspec(dllexport)
 #        define WXIMPORT __declspec(dllimport)
-#    else /* compiler doesn't support __declspec() */
-#        define WXEXPORT
-#        define WXIMPORT
+    /*
+        While gcc also supports __declspec(dllexport), it creates unusably huge
+        DLL files since gcc 4.5 (while taking horribly long amounts of time),
+        see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43601. Because of this
+        we rely on binutils auto export/import support which seems to work
+        quite well for 4.5+.
+     */
+#    elif defined(__GNUC__) && !wxCHECK_GCC_VERSION(4, 5)
+        /*
+            __declspec could be used here too but let's use the native
+            __attribute__ instead for clarity.
+        */
+#       define WXEXPORT __attribute__((dllexport))
+#       define WXIMPORT __attribute__((dllimport))
 #    endif
 #elif defined(__WXPM__)
 #    if defined (__WATCOMC__)
@@ -266,10 +277,13 @@
 
 #ifdef WXMAKINGDLL_WEB
 #    define WXDLLIMPEXP_WEB WXEXPORT
+#    define WXDLLIMPEXP_DATA_WEB(type) WXEXPORT type
 #elif defined(WXUSINGDLL)
 #    define WXDLLIMPEXP_WEB WXIMPORT
+#    define WXDLLIMPEXP_DATA_WEB(type) WXIMPORT type
 #else /* not making nor using DLL */
 #    define WXDLLIMPEXP_WEB
+#    define WXDLLIMPEXP_DATA_WEB(type) type
 #endif
 
 /*