Merge branch 'define-use-svg-in-features.h'

Move wxUSE_SVG definition to wx/defs.h and work around OpenVMS
compilation problems.

See https://github.com/wxWidgets/wxWidgets/pull/2606

include/wx/bmpbndl.h

@@ -18,13 +18,6 @@ class wxBitmapBundleImpl;
 class WXDLLIMPEXP_FWD_CORE wxImageList;
 class WXDLLIMPEXP_FWD_CORE wxWindow;
 
-// It should be possible to implement SVG rasterizing without raw bitmap
-// support using wxDC::DrawSpline(), but currently we don't do it and so
-// FromSVG() is only available in the ports providing raw bitmap access.
-#ifdef wxHAS_RAW_BITMAP
-    #define wxHAS_SVG
-#endif
-
 // ----------------------------------------------------------------------------
 // wxBitmapBundle provides 1 or more versions of a bitmap, all bundled together
 // ----------------------------------------------------------------------------

include/wx/features.h

@@ -95,6 +95,15 @@
     #define wxHAVE_RAW_BITMAP
 #endif
 
+/*
+    While it should be possible to implement SVG rasterizing without raw bitmap
+    support using wxDC::DrawSpline(), currently we don't do it and so FromSVG()
+    is only available in the ports providing raw bitmap access.
+ */
+#ifdef wxHAS_RAW_BITMAP
+    #define wxHAS_SVG
+#endif
+
 
 // Previously this symbol wasn't defined for all compilers as Bind() couldn't
 // be implemented for some of them (notably MSVC 6), but this is not the case

src/generic/bmpsvg.cpp

@@ -19,8 +19,6 @@
 // for compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
-#include "wx/bmpbndl.h"
-
 #ifdef wxHAS_SVG
 
 // Try to help people updating their sources from Git and forgetting to
@@ -38,20 +36,13 @@
 
 #ifdef wxHAS_SVG
 
-#ifndef WX_PRECOMP
-    #include "wx/utils.h"                   // Only for wxMin()
-#endif // WX_PRECOMP
+// Note that we have to include NanoSVG headers before including any of wx
+// headers, notably wx/unichar.h which defines global operator==() overloads
+// for wxUniChar that confuse OpenVMS C++ compiler and break compilation of
+// these headers with errors about ambiguous operator==(char,enum).
 
-#ifdef wxUSE_FFILE
-    #include "wx/ffile.h"
-#elif wxUSE_FILE
-    #include "wx/file.h"
-#else
-    #define wxNO_SVG_FILE
-#endif
-#include "wx/rawbmp.h"
-
-#include "wx/private/bmpbndl.h"
+// This is required by NanoSVG headers, but not included by them.
+#include <stdio.h>
 
 // Disable some warnings inside NanoSVG code that we're not interested in.
 #ifdef __VISUALC__
@@ -75,6 +66,22 @@
     #pragma warning(pop)
 #endif
 
+#ifndef WX_PRECOMP
+    #include "wx/utils.h"                   // Only for wxMin()
+#endif // WX_PRECOMP
+
+#include "wx/bmpbndl.h"
+#ifdef wxUSE_FFILE
+    #include "wx/ffile.h"
+#elif wxUSE_FILE
+    #include "wx/file.h"
+#else
+    #define wxNO_SVG_FILE
+#endif
+#include "wx/rawbmp.h"
+
+#include "wx/private/bmpbndl.h"
+
 // ----------------------------------------------------------------------------
 // private helpers
 // ----------------------------------------------------------------------------