[MacPorts] #31804: wxWidgets-python 2.8.10.1 + --enable-graphics_ctx -> error: build failure

[MacPorts]

#31804: wxWidgets-python 2.8.10.1 + --enable-graphics_ctx -> error: build failure
-----------------------------------------+--------------------------------
  Reporter:  guillaume.chevrot@…         |      Owner:  macports-tickets@…
      Type:  defect                      |     Status:  reopened
  Priority:  Normal                      |  Milestone:
 Component:  ports                       |    Version:
Resolution:                              |   Keywords:
      Port:  wxWidgets-python wxWidgets  |
-----------------------------------------+--------------------------------
Changes (by mojca@…):

 * cc: justjoheinz@…, jwa@…, jameskyle@…, ryandesign@…, mojca@… (added)
 * status:  closed => reopened
 * version:  2.0.3 =>
 * resolution:  invalid =>
 * port:  wxWidgets-python => wxWidgets-python wxWidgets


Comment:

 I tested with {{{wxWidgets}}} 2.8.12, not with {{{wxWidgets-python}}}, but
 it shouldn't make a difference. I succeeded to compile the package as
 64-bit on 10.7 by using {{{gtk2/x11}}}. To allow the  switch {{{--enable-
 graphics_ctx}}} to work I had to do the following (I still need to come up
 with a proper patch):

 - the following code in {{{build/lib/wx/include/gtk2-unicode-
 release-2.8/wx/setup.h}}} is problematic and I defined {{{wxUSE_CAIRO}}}
 to {{{1}}} unconditionally:
 {{{
 #if !defined(__WIN32__) && !defined(__APPLE__)
 #define wxUSE_CAIRO 1
 #else
 #define wxUSE_CAIRO 0
 #endif
 }}}

 - not sure if needed, but a patch from a later upstream version:
 {{{
 --- src/generic/graphicc.cpp.orig
 +++ src/generic/graphicc.cpp
 @@ -1474,10 +1480,10 @@ wxGraphicsContext *
 wxCairoRenderer::CreateContext( const wxMemoryDC& dc)

  wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void
 * context )
  {
 -#if __WXMSW__
 +#ifdef __WXMSW__
      return new wxCairoContext(this,(HDC)context);
  #endif
 -#if __WXGTK__
 +#ifdef __WXGTK__
      return new wxCairoContext(this,(cairo_t*)context);
  #endif
  }
 }}}

 - I had to add {{{-lcairo, -lGL -lGLU}}} to {{{build/Makefile}}} (I'm not
 sure if both GL and GLU are needed, but some symbols were undefined and I
 didn't test if adding just one or the other would still work.)

 After that the port installed fine. If anyone has more experience with
 coming up with a nice patch (given that it compiles on >= 10.6), I would
 be grateful. I'm attaching a {{{Portfile}}} (it might have some
 dependencies from browser:users/mojca/wxports, but it should be enough to
 get the idea of what I have I tested / how I configured the port).

-- 
Ticket URL: <https://trac.macports.org/ticket/31804#comment:3>
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