| Subject: | Another 64-bit troubles with mingw-w64 compiler |
Hi,
I have done another testing with mingw-w64 bit compiler.
After fixing #53471 and #53293 Alien::wxWidgets works nice with 32-bit
compiler from mingw-w64 projects. However there are still some issue
concerning 64-bit compiler by mingw-w64 (yes they do not deliver only
64-bit compiler).
Here are 2 of them (both tested on Alien::wxWidgets 0.50 +
wxWidgets-2.8.10):
1) filefn.h issue
I have experienced this error during compilation:
g++ -c -o gcc_mswudll\basedll_appbase.o -O2 -mthreads -DHAVE_W32API_H
-D__WXMSW__ -D_UNICODE -I..\..\lib\gcc_dll\mswu -I..\..\include -Wall
-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib
-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 DWXMAKINGDLL_BASE
-DwxUSE_BASE=1 -Wno-ctor-dtor -privacy
-MTgcc_mswudll\basedll_appbase.o -MFgcc_mswudll\basedll_appbase.o.d -MD
-MP ../../src/common/appbase.cpp
In file included from ..\..\include/wx/utils.h:21,
from ../../src/common/appbase.cpp:35:
..\..\include/wx/filefn.h:286: error: 'stati64' in namespace '::' does
not name a type
make: *** [gcc_mswudll\basedll_appbase.o] Error 1
The problem is in this section of filefn.h:
#if defined(__BORLANDC__) || defined(__DMC__) || defined(__WATCOMC__) ||
defined(__MINGW64__)
#define wxPOSIX_IDENT(func) ::func
#else // by default assume MSVC-compatible names
#define wxPOSIX_IDENT(func) _ ## func
#define wxHAS_UNDERSCORES_IN_POSIX_IDENTS
#endif
I do not know why there is defined(__MINGW64__) because AFAIK mingw-w64
compiler fits into #else branche (uses underscore).
Fix is to remove defined(__MINGW64__) from #if condition
Note:
__MINGW64__ is defined by 64-bit compiler from mingw-w64 project
__MINGW32__ is defined by both 32/64-bit compilers from mingw-w64 project
2) Problem with src/msw/thread.cpp
g++ -c -o gcc_mswudll\basedll_thread.o -O2 -mthreads -DHAVE_W32API_H
-D__WXMSW__ -D_UNICODE -I..\..\lib\gcc_dll\mswu -I..\..\include -Wall
-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib
-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DWXMAKINGDLL_BASE
-DwxUSE_BASE=1 -Wno-ctor-dtor-privacy
-MTgcc_mswudll\basedll_thread.o -MFgcc_mswudll\basedll_thread.o.d -MD
-MP ../../src/msw/thread.cpp
../../src/msw/thread.cpp: In static member function 'static
THREAD_RETVAL wxThreadInternal::DoThreadStart(wxThread*)':
../../src/msw/thread.cpp:525: error: cast from 'void*' to
'THREAD_RETVAL' losesprecision
../../src/msw/thread.cpp: In member function 'wxThreadError
wxThreadInternal::WaitForTerminate(wxCriticalSection&, void**, wxThread*)':
../../src/msw/thread.cpp:845: error: cast from 'void*' to 'DWORD' loses
precision
../../src/msw/thread.cpp: In member function 'void wxThread::Exit(void*)':
../../src/msw/thread.cpp:1165: error: cast from 'void*' to 'unsigned
int' loses precision
gmake: *** [gcc_mswudll\basedll_thread.o] Error 1
The problem is IMHO in this section of
// define wxUSE_BEGIN_THREAD if the compiler has _beginthreadex() function
// which should be used instead of Win32 ::CreateThread() if possible
#if defined(__VISUALC__) || \
(defined(__BORLANDC__) && (__BORLANDC__ >= 0x500)) || \
(defined(__GNUG__) && defined(__MSVCRT__)) || \
defined(__WATCOMC__) || defined(__MWERKS__)
as it should contain also defined(__MINGW64__) or perhaps also
defined(__MINGW32__) - in case of incompatibility with mingw.org headers
we can use defined(__MINGW64_VERSION_MAJOR).
Unfortunately I am short of time to test it further now, I just want to
keep a record of my up-to-now findings.
If anybody wants to analyse issues on MS Windows 64-bit platform here
you can download my strawberry-like manual build of 64-bit perl:
http://svn.ali.as/cpan/users/kmx/strawberry_64bit-pre/
--
kmx