我在我的项目中使用Qt 5.12.11。由于我想在Linux和Windows上都使用该软件，我选择了gcc编译器（我使用MSYS2，因此gcc是10.3.0）。本地构建在Linux和Windows上都没有问题，但是通过GitHub Actions构建时找不到qt（无论我是否设置了CMAKE_PREFIX_PATH或Qt5_DIR）。
所以这就是我陷入困境的地方。是否有人遇到过这样的问题或者有任何想法呢？
GitHub Action看起来像：
直接从CMakeLists中发送消息到CMAKE_PREFIX_PATH返回结果。
所以这就是我陷入困境的地方。是否有人遇到过这样的问题或者有任何想法呢？
GitHub Action看起来像：
name: Build
on:
push:
branches: [ master ]
pull_request:
branches: [ master ]
env:
BUILD_TYPE: Release
jobs:
build:
runs-on: windows-latest
defaults:
run:
shell: msys2 {0}
steps:
- uses: msys2/setup-msys2@v2
with:
install: mingw-w64-x86_64-toolchain
msystem: mingw64
release: false
- name: Install Qt
uses: jurplel/install-qt-action@v2
with:
version: '5.12.11'
host: 'windows'
target: 'desktop'
arch: 'win64_mingw73'
dir: '${{github.workspace}}/qt/'
install-deps: 'true'
- name: List files in Qt
run: find ${{env.Qt5_Dir}}
- uses: actions/checkout@v2
- name: Configure CMake
run: cmake -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_PREFIX_PATH="${{env.Qt5_Dir}}/lib/cmake/" -DQt5_DIR=${{env.Qt5_Dir}}/lib/cmake/Qt5/ -G "CodeBlocks - MinGW Makefiles" -B '${{github.workspace}}'/build
- name: Build
run: cmake --build '${{github.workspace}}'/build --target RePr
我还尝试过使用-DCMAKE_PREFIX_PATH="${{env.Qt5_Dir}}/lib/cmake/Qt5/"，但是没有帮助。:( 如果我从CMakeLists直接设置CMAKE_PREFIX_PATH，我会观察到相同的行为。
出现问题的CMakeLists很简单和通常（它是一个使用qt的嵌套包，因此不要困惑于不同的CMakeLists项目和构建目标）。
cmake_minimum_required(VERSION 3.14)
project(RePr_controller)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_AUTOUIC ON)
set(QT_VERSION 5)
set(REQUIRED_LIBS Core Gui Widgets)
set(REQUIRED_LIBS_QUALIFIED Qt5::Core Qt5::Gui Qt5::Widgets)
add_library(${PROJECT_NAME} main_window.cpp main_window.h main_window.ui resources/resources.qrc)
add_dependencies(${PROJECT_NAME} FacadeLib)
target_link_libraries(${PROJECT_NAME} FacadeLib Utils)
find_package(Qt${QT_VERSION} COMPONENTS ${REQUIRED_LIBS} REQUIRED)
target_link_libraries(${PROJECT_NAME} ${REQUIRED_LIBS_QUALIFIED})
直接从CMakeLists中发送消息到CMAKE_PREFIX_PATH返回结果。
D:/a/RePr/RePr/qt/Qt/5.12.11/mingw73_64/lib/cmake/
Qt5已经到了
D:/a/RePr/RePr/qt/Qt/5.12.11/mingw73_64/lib/cmake/Qt5/Qt5Config.cmake
最后，我从配置步骤中获得了这个消息
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="D:/a/RePr/RePr/qt/Qt/5.12.11/mingw73_64/lib/cmake/" -DQt5_DIR=D:/a/RePr/RePr/qt/Qt/5.12.11/mingw73_64/lib/cmake/Qt5/ -G "CodeBlocks - MinGW Makefiles" -B 'D:\a\RePr\RePr'/build
shell: D:\a\_temp\msys\msys2.CMD {0}
env:
BUILD_TYPE: Release
MSYSTEM: MINGW64
pythonLocation: C:\hostedtoolcache\windows\Python\3.9.6\x64
Qt5_Dir: D:/a/RePr/RePr/qt/Qt/5.12.11/mingw73_64
QT_PLUGIN_PATH: D:/a/RePr/RePr/qt/Qt/5.12.11/mingw73_64/plugins
QML2_IMPORT_PATH: D:/a/RePr/RePr/qt/Qt/5.12.11/mingw73_64/qml
-- The C compiler identification is GNU 10.3.0
-- The CXX compiler identification is GNU 10.3.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/msys64/mingw64/bin/gcc.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: C:/msys64/mingw64/bin/g++.exe - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at Controller/CMakeLists.txt:17 (find_package):
By not providing "FindQt5.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Qt5", but
-- Configuring incomplete, errors occurred!
See also "D:/a/RePr/RePr/build/CMakeFiles/CMakeOutput.log".
CMake did not find one.
Could not find a package configuration file provided by "Qt5" with any of
the following names:
Qt5Config.cmake
qt5-config.cmake
Add the installation prefix of "Qt5" to CMAKE_PREFIX_PATH or set "Qt5_DIR"
to a directory containing one of the above files. If "Qt5" provides a
separate development package or SDK, be sure it has been installed.
Error: Process completed with exit code 1.