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在windows 10 上用ninja编译gn构建工具时编译器遇到C4819
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問題發現經過
平臺：Windows10 LTSC,VS2017,python3.9
F:
\program
\git
> git clone https://bitbucket.org/chromiumembedded/cef/src/master/ gn
F:
\program
\git
> cd gn
F:
\program
\git
\gn
> python build/gen.py
F:
\program
\git
\gn
> vcvarsall x64
**********************************************************************
** Visual Studio
2017 Developer Command Prompt v15.9.21
** Copyright
(c
) 2017 Microsoft Corporation
**********************************************************************
[vcvarsall.bat
] Environment initialized for:
'x64'
F:
\program
\git
\gn
> ninja -C out
[51/284
] CXX src/gn/command_help.obj
FAILED: src/gn/command_help.obj
ninja -t msvc -- cl.exe /nologo /showIncludes /FC -I
..\src -I. /O2 /DNDEBUG /Zc:inline /DNOMINMAX /DUNICODE /DWIN32_LEAN_AND_MEAN /DWINVER
=0x0A00 /D_CRT_SECURE_NO_DEPRECATE /D_SCL_SECURE_NO_DEPRECATE /D_UNICODE /D_WIN32_WINNT
=0x0A00 /FS /W4 /WX /Zi /wd4099 /wd4100 /wd4127 /wd4244 /wd4267 /wd4505 /wd4838 /wd4996 /std:c++17 /GR- /D_HAS_EXCEPTIONS
=0 /c
..\src
\gn
\command_help.cc /Fosrc/gn/command_help.obj
f:
\program
\git
\gn
\src
\gn
\escape.h: error C2220: warning treated as error - no
'object' file generated
f:
\program
\git
\gn
\src
\gn
\escape.h: warning C4819: The
file contains a character that cannot be represented
in the current code page
(936). Save the
file in Unicode
format to prevent data loss
解決方法
修改gn/build/gen.py 第525行：
修改前
'/wd4244','/wd4267','/wd4505','/wd4838','/wd4996','/std:c++17','/GR-','/D_HAS_EXCEPTIONS=0',])
添加一個’/wd4819’,
'/wd4244','/wd4267','/wd4505','/wd4838','/wd4819','/wd4996','/std:c++17','/GR-','/D_HAS_EXCEPTIONS=0',])
之后刪除 out/src 文件，重新ninja -C out ，成功
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