[Qt-creator] mingw-w64-crt/crt/crt0_c.c:18: undefined reference to `WinMain'

[Loaden]

Hi, all!
I just try to cross compile for Windows, in final, I can't solved a link
error, It's looks strange.
https://codereview.qt-project.org/#change,29231

linking qtcreator.exe
> linking libQt4ProjectManager.dll
> /usr/bin/x86_64-w64-mingw32-g++ -O2 -Wall -W
> /home/loaden/qpSOFT/Projects/QtCreator/build/windows-x64-mingw64-release/.obj/qtcreator/GeneratedFiles/qtcreator/moc_qtsingleapplication.o
> /home/loaden/qpSOFT/Projects/QtCreator/build/windows-x64-mingw64-release/.obj/qtcreator/GeneratedFiles/qtcreator/moc_qtlocalpeer.o
> /home/loaden/qpSOFT/Projects/QtCreator/build/windows-x64-mingw64-release/.obj/qtcreator/src/shared/qtsingleapplication/qtsingleapplication.o
> /home/loaden/qpSOFT/Projects/QtCreator/build/windows-x64-mingw64-release/.obj/qtcreator/src/shared/qtlockedfile/qtlockedfile_win.o
> /home/loaden/qpSOFT/Projects/QtCreator/build/windows-x64-mingw64-release/.obj/qtcreator/src/shared/qtlockedfile/qtlockedfile.o
> /home/loaden/qpSOFT/Projects/QtCreator/build/windows-x64-mingw64-release/.obj/qtcreator/src/app/main.o
> /home/loaden/qpSOFT/Projects/QtCreator/build/windows-x64-mingw64-release/.obj/qtcreator/src/shared/qtsingleapplication/qtlocalpeer.o
> -Wl,-subsystem,windows -o
> /home/loaden/qpSOFT/Projects/QtCreator/build/windows-x64-mingw64-release/bin/qtcreator.exe
> -Wl,-rpath,$ORIGIN/../lib/qtcreator
> -L/home/loaden/qpSOFT/Projects/MingwQt-x64/qtbase/lib
> -L/home/loaden/qpSOFT/Projects/QtCreator/build/windows-x64-mingw64-release/bin
> -L/home/loaden/qpSOFT/Projects/QtCreator/build/windows-x64-mingw64-release/bin
> -lqtmain -lkernel32 -lgdi32 -lshell32 -lQtCore5 -lQtGui5 -lQtNetwork5
> -lQtWidgets5 -lQtConcurrent5 -luser32 -liphlpapi -lws2_32 -lQtScript5
> -llibExtensionSystem -llibUtils
> */usr/lib/gcc/x86_64-w64-mingw32/4.6/../../../../x86_64-w64-mingw32/lib/libmingw32.a(lib64_libmingw32_a-crt0_c.o):
> In function `main':
> /build/buildd/mingw-w64-2.0.1/build/x86_64-w64-mingw32/all/mingw-w64-crt/../../../../mingw-w64-crt/crt/crt0_c.c:18:
> undefined reference to `WinMain'
> collect2: ld returned 1 exit status*
>
> ERROR: Process failed with exit code 1.
> ERROR: The following products could not be built: GLSLEditor, Git,
> styleplugin, QmlJSEditor, ClassView, QtComponents, CppEditor,
> QmlProjectManager, Macros, SharedContent, qtcdebugger, VcsBase,
> CMakeProjectManager, Welcome, Designer, Help, ResourceEditor,
> GenericProjectManager, AnalyzerBase, RemoteLinux, zeroconf, Valgrind,
> Bookmarks, QmlProfiler, Todo, QmlEditorWidgets, qtcreator_process_stub,
> mdnssd, qtpromaker, qtcreator_ctrlc_stub, qtcreator, GLSL.
> Build failed.
>
>
I look into mingw-w64's *mingw-w64-crt/crt/crt0_c.c:
*
>
> /**
>  * This file has no copyright assigned and is placed in the Public Domain.
>  * This file is part of the w64 mingw-runtime package.
>  * No warranty is given; refer to the file DISCLAIMER.PD within this
> package.
>  */
>
> #include <windows.h>
>
> extern HINSTANCE __mingw_winmain_hInstance;
> extern LPSTR __mingw_winmain_lpCmdLine;
> extern DWORD __mingw_winmain_nShowCmd;
>
> /*ARGSUSED*/
> int main (int     __UNUSED_PARAM(flags),
>       char ** __UNUSED_PARAM(cmdline),
>       char ** __UNUSED_PARAM(inst))
> {
>   return (int) WinMain (__mingw_winmain_hInstance, NULL,
>             __mingw_winmain_lpCmdLine, __mingw_winmain_nShowCmd);
> }
>
It's should never happen, I mean we have owner main entry.
Why we call mingw-w64's main function as entry?
Any comments?

-- 
Please don't ask where I come from, It's a shame!
Best Regards
Yuchen
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