X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b5dbe15d0bacde245539f54c4d97af6b4696f01f..558820fd083635d3e1dc026a56b2f14870cb5c38:/include/wx/dlimpexp.h

diff --git a/include/wx/dlimpexp.h b/include/wx/dlimpexp.h
index 6a82f65610..13078ba563 100644
--- a/include/wx/dlimpexp.h
+++ b/include/wx/dlimpexp.h
@@ -16,7 +16,10 @@
 #ifndef _WX_DLIMPEXP_H_
 #define _WX_DLIMPEXP_H_
 
-#if defined(__WXMSW__)
+#if defined(HAVE_VISIBILITY)
+#    define WXEXPORT __attribute__ ((visibility("default")))
+#    define WXIMPORT __attribute__ ((visibility("default")))
+#elif defined(__WINDOWS__)
     /*
        __declspec works in BC++ 5 and later, Watcom C++ 11.0 and later as well
        as VC++ and gcc
@@ -78,8 +81,6 @@
 #    define WXMAKINGDLL_CORE
 #    define WXMAKINGDLL_ADV
 #    define WXMAKINGDLL_QA
-#    define WXMAKINGDLL_ODBC
-#    define WXMAKINGDLL_DBGRID
 #    define WXMAKINGDLL_HTML
 #    define WXMAKINGDLL_GL
 #    define WXMAKINGDLL_XML
@@ -138,17 +139,6 @@
 #    define WXDLLIMPEXP_DATA_ADV(type) type
 #endif
 
-#ifdef WXMAKINGDLL_ODBC
-#    define WXDLLIMPEXP_ODBC WXEXPORT
-#    define WXDLLIMPEXP_DATA_ODBC(type) WXEXPORT type
-#elif defined(WXUSINGDLL)
-#    define WXDLLIMPEXP_ODBC WXIMPORT
-#    define WXDLLIMPEXP_DATA_ODBC(type) WXIMPORT type
-#else /* not making nor using DLL */
-#    define WXDLLIMPEXP_ODBC
-#    define WXDLLIMPEXP_DATA_ODBC(type) type
-#endif
-
 #ifdef WXMAKINGDLL_QA
 #    define WXDLLIMPEXP_QA WXEXPORT
 #    define WXDLLIMPEXP_DATA_QA(type) WXEXPORT type
@@ -160,17 +150,6 @@
 #    define WXDLLIMPEXP_DATA_QA(type) type
 #endif
 
-#ifdef WXMAKINGDLL_DBGRID
-#    define WXDLLIMPEXP_DBGRID WXEXPORT
-#    define WXDLLIMPEXP_DATA_DBGRID(type) WXEXPORT type
-#elif defined(WXUSINGDLL)
-#    define WXDLLIMPEXP_DBGRID WXIMPORT
-#    define WXDLLIMPEXP_DATA_DBGRID(type) WXIMPORT type
-#else /* not making nor using DLL */
-#    define WXDLLIMPEXP_DBGRID
-#    define WXDLLIMPEXP_DATA_DBGRID(type) type
-#endif
-
 #ifdef WXMAKINGDLL_HTML
 #    define WXDLLIMPEXP_HTML WXEXPORT
 #    define WXDLLIMPEXP_DATA_HTML(type) WXEXPORT type
@@ -238,27 +217,74 @@
     #define WXDLLIMPEXP_STC
 #endif
 
-/* GCC warns about using __attribute__ on forward declarations, so we need
-   another set of macros for them: */
-#define WXDLLIMPEXP_FWD_BASE      WXDLLIMPEXP_BASE
-#define WXDLLIMPEXP_FWD_NET       WXDLLIMPEXP_NET
-#define WXDLLIMPEXP_FWD_CORE      WXDLLIMPEXP_CORE
-#define WXDLLIMPEXP_FWD_ADV       WXDLLIMPEXP_ADV
-#define WXDLLIMPEXP_FWD_QA        WXDLLIMPEXP_QA
-#define WXDLLIMPEXP_FWD_ODBC      WXDLLIMPEXP_ODBC
-#define WXDLLIMPEXP_FWD_DBGRID    WXDLLIMPEXP_DBGRID
-#define WXDLLIMPEXP_FWD_HTML      WXDLLIMPEXP_HTML
-#define WXDLLIMPEXP_FWD_GL        WXDLLIMPEXP_GL
-#define WXDLLIMPEXP_FWD_XML       WXDLLIMPEXP_XML
-#define WXDLLIMPEXP_FWD_XRC       WXDLLIMPEXP_XRC
-#define WXDLLIMPEXP_FWD_AUI       WXDLLIMPEXP_AUI
-#define WXDLLIMPEXP_FWD_RICHTEXT  WXDLLIMPEXP_RICHTEXT
-#define WXDLLIMPEXP_FWD_MEDIA     WXDLLIMPEXP_MEDIA
-#define WXDLLIMPEXP_FWD_STC       WXDLLIMPEXP_STC
+/*
+   GCC warns about using __attribute__ (and also __declspec in mingw32 case) on
+   forward declarations while MSVC complains about forward declarations without
+   __declspec for the classes later declared with it, so we need a separate set
+   of macros for forward declarations to hide this difference:
+ */
+#if defined(HAVE_VISIBILITY) || (defined(__WINDOWS__) && defined(__GNUC__))
+    #define WXDLLIMPEXP_FWD_BASE
+    #define WXDLLIMPEXP_FWD_NET
+    #define WXDLLIMPEXP_FWD_CORE
+    #define WXDLLIMPEXP_FWD_ADV
+    #define WXDLLIMPEXP_FWD_QA
+    #define WXDLLIMPEXP_FWD_HTML
+    #define WXDLLIMPEXP_FWD_GL
+    #define WXDLLIMPEXP_FWD_XML
+    #define WXDLLIMPEXP_FWD_XRC
+    #define WXDLLIMPEXP_FWD_AUI
+    #define WXDLLIMPEXP_FWD_RICHTEXT
+    #define WXDLLIMPEXP_FWD_MEDIA
+    #define WXDLLIMPEXP_FWD_STC
+#else
+    #define WXDLLIMPEXP_FWD_BASE      WXDLLIMPEXP_BASE
+    #define WXDLLIMPEXP_FWD_NET       WXDLLIMPEXP_NET
+    #define WXDLLIMPEXP_FWD_CORE      WXDLLIMPEXP_CORE
+    #define WXDLLIMPEXP_FWD_ADV       WXDLLIMPEXP_ADV
+    #define WXDLLIMPEXP_FWD_QA        WXDLLIMPEXP_QA
+    #define WXDLLIMPEXP_FWD_HTML      WXDLLIMPEXP_HTML
+    #define WXDLLIMPEXP_FWD_GL        WXDLLIMPEXP_GL
+    #define WXDLLIMPEXP_FWD_XML       WXDLLIMPEXP_XML
+    #define WXDLLIMPEXP_FWD_XRC       WXDLLIMPEXP_XRC
+    #define WXDLLIMPEXP_FWD_AUI       WXDLLIMPEXP_AUI
+    #define WXDLLIMPEXP_FWD_RICHTEXT  WXDLLIMPEXP_RICHTEXT
+    #define WXDLLIMPEXP_FWD_MEDIA     WXDLLIMPEXP_MEDIA
+    #define WXDLLIMPEXP_FWD_STC       WXDLLIMPEXP_STC
+#endif
 
 /* for backwards compatibility, define suffix-less versions too */
 #define WXDLLEXPORT WXDLLIMPEXP_CORE
 #define WXDLLEXPORT_DATA WXDLLIMPEXP_DATA_CORE
 
+/*
+   MSVC up to 6.0 needs to be explicitly told to export template instantiations
+   used by the DLL clients, use this macro to do it like this:
+
+       template <typename T> class Foo { ... };
+       WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE( Foo<int> )
+
+   (notice that currently we only need this for the wxBase library)
+ */
+#if defined(__VISUALC__) && (__VISUALC__ <= 1200)
+    #ifdef WXMAKINGDLL_BASE
+        #define WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE(decl) \
+            template class WXDLLIMPEXP_BASE decl;
+    #else
+        /*
+           We need to disable this warning when using this macro, as
+           recommended by Microsoft itself: 
+
+           http://support.microsoft.com/default.aspx?scid=kb%3ben-us%3b168958
+         */
+        #pragma warning(disable:4231)
+
+        #define WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE(decl) \
+            extern template class WXDLLIMPEXP_BASE decl;
+    #endif
+#else /* not VC <= 6 */
+    #define WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE(decl)
+#endif /* VC6/others */
+
 #endif /* _WX_DLIMPEXP_H_ */