在Visual Studio（VC++）中，使用mingw32 gcc編譯的庫檔案（*.a）

新增gcc編譯好的庫到連結依賴中之後，如果編譯出現：無法解析的外部符號， 例如：

Build started...

1>------ Build started: Project: x264Test, Configuration: Debug Win32 ------

1>x264Test.cpp

1>libx264.a(base.o) : error LNK2019: unresolved external symbol ___chkstk_ms referenced in function _x264_vfprintf.isra.0

1>libx264.a(base.o) : error LNK2019: unresolved external symbol ___umoddi3 referenced in function _x264_reduce_fraction64

1>libx264.a(base.o) : error LNK2019: unresolved external symbol ___udivdi3 referenced in function _x264_reduce_fraction64

1>libx264.a(base.o) : error LNK2019: unresolved external symbol ___mingw_vsscanf referenced in function _sscanf

1>libx264.a(base.o) : error LNK2019: unresolved external symbol ___mingw_vsprintf referenced in function _sprintf

1>libx264.a(base.o) : error LNK2019: unresolved external symbol ___mingw_vfprintf referenced in function _fprintf.constprop.0

1>libx264.a(base.o) : error LNK2019: unresolved external symbol ___mingw_vsnprintf referenced in function _x264_vfprintf.isra.0

1>libx264.a(base.o) : error LNK2019: unresolved external symbol _fseeko64 referenced in function _x264_slurp_file

1>libx264.a(base.o) : error LNK2019: unresolved external symbol _ftello64 referenced in function _x264_slurp_file

1>libx264.a(base.o) : error LNK2019: unresolved external symbol _strtok_r referenced in function _x264_param_parse

1>libx264.a(base.o) : error LNK2019: unresolved external symbol ___mingw_strtod referenced in function _x264_param_parse

1>D:\FPiano工作區\x264Test\Debug\x264Test.exe : fatal error LNK1120: 11 unresolved externals

1>Done building project "x264Test.vcxproj" -- FAILED.

========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

需要複製：

C:\msys64\mingw32\lib\gcc\i686-w64-mingw32\11.2.0\libgcc.a

C:\msys64\mingw32\i686-w64-mingw32\lib\libmingwex.a（32位的）

或

C:\msys64\mingw64\x86_64-w64-mingw32\lib\libmingwex.a（64位的）

到工程目錄中。（或工程中包含其放置的目錄）

並設定連結依賴libgcc.a ，libmingwex.a

同理：

在Visual Studio（VC++）中，使用mingw32 gcc編譯的dll檔案，要新增相關的dll檔案到工程中。