使用 Github Actions 为 Windows 编译 QT 应用程序时出错
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【中文标题】使用 Github Actions 为 Windows 编译 QT 应用程序时出错【英文标题】：Error compiling a QT app for Windows with Github Actions 【发布时间】：2021-11-18 09:06:27 【问题描述】：我试图让 Github Actions 在 Windows 上编译我的项目，但它失败了。在我的机器上编译时，它编译得很好。为什么在 Github Actions 上会失败？
我也尝试过使用 juppel/install-qt-action@v2.5.3 安装 QT，但我得到了同样的错误
该项目在 Mac 和 Linux 上编译良好p>
编译输出：
Info: creating stash file D:\a\dsda-launcher\dsda-launcher\dsda-launcher\build\.qmake.stash
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C:/ProgramData/Chocolatey/lib/make/tools/install/bin/make.exe -f Makefile.Release
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make[1]: Entering directory 'D:/a/dsda-launcher/dsda-launcher/dsda-launcher/build'
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'C:\Qt\5.15.2\mingw81_64\bin\uic.exe' ../mainwindow.ui -o ui_mainwindow.h
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g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -Wall -Wextra -Wextra -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DAPP_NAME=dsda-launcher -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CONCURRENT_LIB -DQT_CORE_LIB -DQT_NEEDS_QMAIN -I../../dsda-launcher -I. -IC:/Qt/5.15.2/mingw81_64/include -IC:/Qt/5.15.2/mingw81_64/include/QtWidgets -IC:/Qt/5.15.2/mingw81_64/include/QtGui -IC:/Qt/5.15.2/mingw81_64/include/QtANGLE -IC:/Qt/5.15.2/mingw81_64/include/QtNetwork -IC:/Qt/5.15.2/mingw81_64/include/QtConcurrent -IC:/Qt/5.15.2/mingw81_64/include/QtCore -Irelease -I. -I/include -IC:/Qt/5.15.2/mingw81_64/mkspecs/win32-g++ -o release/main.o ../main.cpp
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g++ -c -fno-keep-inline-dllexport -O2 -std=gnu++11 -Wall -Wextra -Wextra -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DAPP_NAME=dsda-launcher -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CONCURRENT_LIB -DQT_CORE_LIB -DQT_NEEDS_QMAIN -I../../dsda-launcher -I. -IC:/Qt/5.15.2/mingw81_64/include -IC:/Qt/5.15.2/mingw81_64/include/QtWidgets -IC:/Qt/5.15.2/mingw81_64/include/QtGui -IC:/Qt/5.15.2/mingw81_64/include/QtANGLE -IC:/Qt/5.15.2/mingw81_64/include/QtNetwork -IC:/Qt/5.15.2/mingw81_64/include/QtConcurrent -IC:/Qt/5.15.2/mingw81_64/include/QtCore -Irelease -I. -I/include -IC:/Qt/5.15.2/mingw81_64/mkspecs/win32-g++ -o release/mainwindow.o ../mainwindow.cpp
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../mainwindow.cpp: In function 'QString lowerCase(std::__cxx11::string)':
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../mainwindow.cpp:77:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' aka 'long long unsigned int' [-Wsign-compare]
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for(int i=0;i<word.length();i++)
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~^~~~~~~~~~~~~~
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../mainwindow.cpp: In constructor 'MainWindow::MainWindow(QWidget*)':
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../mainwindow.cpp:211:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' aka 'long long unsigned int' [-Wsign-compare]
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for(int i=0;i<tp.length();i++) // Loop the chars to find the 4 quotes
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~^~~~~~~~~~~~
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../mainwindow.cpp:266:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' aka 'long long unsigned int' [-Wsign-compare]
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for(int i=0;i<tp.length();i++)
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~^~~~~~~~~~~~
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../mainwindow.cpp:308:46: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' aka 'long long unsigned int' [-Wsign-compare]
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for(int i=0;i<tp.length();i++)
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~^~~~~~~~~~~~
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../mainwindow.cpp: In member function 'void MainWindow::on_LaunchGameButton_clicked(bool, bool)':
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../mainwindow.cpp:881:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' aka 'long long unsigned int' [-Wsign-compare]
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for(int i=0; i<dehFiles.length();i++)
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~^~~~~~~~~~~~~~~~~~
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../mainwindow.cpp:893:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' aka 'long long unsigned int' [-Wsign-compare]
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for(int i=0; i<files.length();i++)
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~^~~~~~~~~~~~~~~
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In file included from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/windows.h:65,
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from ../mainwindow.cpp:1068:
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C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/excpt.h:14:8: error: expected unqualified-id before string constant
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extern "C"
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^~~
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In file included from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/minwindef.h:6,
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from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/windef.h:8,
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from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/windows.h:69,
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from ../mainwindow.cpp:1068:
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C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/specstrings.h:18:8: error: expected unqualified-id before string constant
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extern "C"
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^~~
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In file included from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/windef.h:8,
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from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/windows.h:69,
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from ../mainwindow.cpp:1068:
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C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/minwindef.h:19:8: error: expected unqualified-id before string constant
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extern "C"
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^~~
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In file included from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/x86intrin.h:27,
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from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/winnt.h:1554,
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from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/minwindef.h:163,
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from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/windef.h:8,
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from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/windows.h:69,
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from ../mainwindow.cpp:1068:
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C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/ia32intrin.h:55:25: error: expected '' before end of line
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#pragma GCC push_options
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^
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../mainwindow.cpp:751:1: note: to match this ''
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^
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In file included from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/x86intrin.h:27,
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from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/winnt.h:1554,
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from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/minwindef.h:163,
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from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/windef.h:8,
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from C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/x86_64-w64-mingw32/include/windows.h:69,
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from ../mainwindow.cpp:1068:
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C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/ia32intrin.h: At global scope:
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C:/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/ia32intrin.h:55:25: error: expected declaration before end of line
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#pragma GCC push_options
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^
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make[1]: *** [Makefile.Release:725: release/mainwindow.o] Error 1
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make[1]: Leaving directory 'D:/a/dsda-launcher/dsda-launcher/dsda-launcher/build'
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make: *** [Makefile:45: release] Error 2
Github 操作代码：
steps:
- name: Install qt
run: |
choco install qt5-default
- uses: actions/checkout@v2
- name: build
run: |
C:\Qt\5.15.2\mingw81_64\bin\qmake.exe ..
make.exe
【问题讨论】：
【参考方案1】：找到了解决办法。在包含任何其他标题之前，我必须致电 #include <windows.h>。我不知道为什么，但它确实有效。
https://forum.qt.io/topic/38780/solved-errors-with-windows-h
【讨论】：
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