[matplotlib-devel] building mpl on windows for wx blitting

[Charlie M. <cw...@gm...>]

Hi all.  Trying to build the next mpl release, and I am running into a
hurdle with wx.  We are trying to include the _wxagg module in the
next release and this has not been done before.  I am able to
successfully build wx under mingw, and the entire mpl compilation goes
fine until I hit the linking stage for _wxagg.  Error output pasted
below.  Googling these errors hasn't led me to anything obvious.=20
There are a lot of mentions of the vtable for xxx undefined
references.  Does anybody have any clues?

Thanks,

--------------------------------------------------
building 'matplotlib.backends._wxagg' extension
gcc options: '-O2 -Wall -Wstrict-prototypes'
compile options: '-Iwin32_static\include -I. -Isrc -Iswig
-Iagg23/include -I. -Iwin32_static\include -I.
-Iwin32_static\include\freetype2 -I.\freetype2 -Isrc\freetype2
-Iswig\freetype2 -Iagg23/include\freetype2 -I.\freetype2
-Iwin32_static\include\freetype2 -I.\freetype2 -Ic:\Python24\include
-Ic:\Python24\PC -c'
g++ -shared build\temp.win32-2.4\Release\src\_wxagg.o
build\temp.win32-2.4\Release\src\mplutils.o
build\temp.win32-2.4\Release\cxx\cxxsupport.o
build\temp.win32-2.4\Release\cxx\cxx_extensions.o
build\temp.win32-2.4\Release\cxx\indirectpythoninterface.o
build\temp.win32-2.4\Release\cxx\cxxextensions.o -Lwin32_static\lib
-Lwin32_static\lib -Lc:\Python24\libs -Lc:\Python24\PCBuild -lpng -lz
-lstdc++ -lm -lfreetype -lz -lgw32c -lstdc++ -lm -lwxmsw26 -lwxpng
-lwxregex -lwxzlib -lwxexpat -lwxjpeg -lwxtiff -lpython24 -lmsvcr71 -o
build\lib.win32-2.4\matplotlib\backends\_wxagg.pyd
build\temp.win32-2.4\Release\src\_wxagg.o(.text+0x7c3):_wxagg.cpp:
undefined reference to `wxImage::wxImage(int, int, unsigned char*,
bool)'
build\temp.win32-2.4\Release\src\_wxagg.o(.text$_ZN13_wxagg_module24convert=
_agg_to_wx_bitmapERKN2Py5TupleE[_wxagg_module::convert_agg_to_wx_bitmap(Py:=
:Tuple
const&)]+0x38d):_wxagg.cpp: undefined reference to
`wxImage::wxImage(wxImage const*)'
build\temp.win32-2.4\Release\src\_wxagg.o(.text$_ZN13_wxagg_module24convert=
_agg_to_wx_bitmapERKN2Py5TupleE[_wxagg_module::convert_agg_to_wx_bitmap(Py:=
:Tuple
const&)]+0x3b8):_wxagg.cpp: undefined reference to `vtable for
wxBitmap'
build\temp.win32-2.4\Release\src\_wxagg.o(.text$_ZN13_wxagg_module24convert=
_agg_to_wx_bitmapERKN2Py5TupleE[_wxagg_module::convert_agg_to_wx_bitmap(Py:=
:Tuple
const&)]+0x3df):_wxagg.cpp: undefined reference to
`wxBitmap::CreateFromImage(wxImage const&, int)'
build\temp.win32-2.4\Release\src\_wxagg.o(.text$_ZN13_wxagg_module24convert=
_agg_to_wx_bitmapERKN2Py5TupleE[_wxagg_module::convert_agg_to_wx_bitmap(Py:=
:Tuple
const&)]+0x3e6):_wxagg.cpp: undefined reference to `vtable for
wxObject'
build\temp.win32-2.4\Release\src\_wxagg.o(.text$_ZN13_wxagg_module24convert=
_agg_to_wx_bitmapERKN2Py5TupleE[_wxagg_module::convert_agg_to_wx_bitmap(Py:=
:Tuple
const&)]+0x3fc):_wxagg.cpp: undefined reference to `wxObject::UnRef()'
build\temp.win32-2.4\Release\src\_wxagg.o(.text$_ZN13_wxagg_module24convert=
_agg_to_wx_bitmapERKN2Py5TupleE[_wxagg_module::convert_agg_to_wx_bitmap(Py:=
:Tuple
const&)]+0x415):_wxagg.cpp: undefined reference to
`wxImage::Destroy()'
build\temp.win32-2.4\Release\src\_wxagg.o(.text$_ZN13_wxagg_module24convert=
_agg_to_wx_bitmapERKN2Py5TupleE[_wxagg_module::convert_agg_to_wx_bitmap(Py:=
:Tuple
const&)]+0x55d):_wxagg.cpp: undefined reference to `vtable for
wxObject'
build\temp.win32-2.4\Release\src\_wxagg.o(.text$_ZN13_wxagg_module24convert=
_agg_to_wx_bitmapERKN2Py5TupleE[_wxagg_module::convert_agg_to_wx_bitmap(Py:=
:Tuple
const&)]+0x56b):_wxagg.cpp: undefined reference to `wxObject::UnRef()'
build\temp.win32-2.4\Release\src\_wxagg.o(.text$_ZN13_wxagg_module24convert=
_agg_to_wx_bitmapERKN2Py5TupleE[_wxagg_module::convert_agg_to_wx_bitmap(Py:=
:Tuple
const&)]+0x580):_wxagg.cpp: undefined reference to `vtable for
wxObject'
build\temp.win32-2.4\Release\src\_wxagg.o(.text$_ZN13_wxagg_module24convert=
_agg_to_wx_bitmapERKN2Py5TupleE[_wxagg_module::convert_agg_to_wx_bitmap(Py:=
:Tuple
const&)]+0x593):_wxagg.cpp: undefined reference to `wxObject::UnRef()'
collect2: ld returned 1 exit status
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