I'v recently compiled wxWidgets 3.0.3 with mingw-w64 7.2.0, but due some problems with exception handling now I'm trying recompile them with llvm 5.0.0 (using x86_64-w64-windows-gnu target, standard library from mingw-w64 7.2.0, 64 bit, seh, posix threads) which has not those problems.
I have not find instructions how to build current stable version (3.0.3) of wxWidgets with Clang on Windows. So I'm trying a command like
mingw32-make.exe -f makefile.gcc MONOLITHIC=1 SHARED=1 BUILD=debug CXXFLAGS=" -fexceptions -fasynchronous-unwind-tables -fnon-call-exceptions -std=gnu++11 -pthread " LDFLAGS=" -fexceptions -fasynchronous-unwind-tables -fnon_call_exceptions -pthread " CC="clang -target x86_64-w64-windows-gnu" CXX="clang++ -target x86_64-w64-windows-gnu" COMPILER_PREFIX="clang"
in ..\build\msw subdirectory to build one of the possible configurations.
(With mingw-w64 I used also LDFLAGS=" -Wl,--allow-multiple-definition ", possible here will be problems with multiple symbols too. I've also pathched source code as I had problems with wxPrintf)
The first error I have:
../../src/msw/mediactrl_am.cpp:2234:10: error: case value evaluates to
4294966687, which cannot be narrowed to type 'DISPID' (aka 'long')
[-Wc++11-narrowing]
case 0xfffffd9f: // readystatechange in IActiveMovie2 and IMediaPlayer
^
1 error generated.
My account on wxWidgets forum not activated yet, so I ask here.
May be somebody knows correct way how to repair this issue?
The obvious fix for this particular problem seems to be to replace this value with -609.
However I need to warn you that, to the best of my knowledge, nobody has compiled wxMSW using clang so far (even though clang can be used for compiling wxGTK and wxOSX, of course), so you may well run into other, less trivial, problems later. I'd also recommend trying to compile the latest git master instead of 3.0.3 as any non-trivial changes that might be required for clang build are unlikely to be done in the stable 3.0 branch.