linux – CMAKE_PREFIX_PATH无法帮助CMake查找Qt5

概述从这里： https://stackoverflow.com/a/28327499/462608 我试过这个： cmake_minimum_required(VERSION 2.8.12)project(qtquick_hello_cmake)set(CMAKE_PREFIX_PATH "/opt/Qt5.9.1/5.9.1/")set(CMAKE_INCLUDE_CURRENT_DI 从这里： https://stackoverflow.com/a/28327499/462608

我试过这个：

cmake_minimum_required(VERSION 2.8.12)project(qtquick_hello_cmake)set(CMAKE_PREFIX_PATH "/opt/Qt5.9.1/5.9.1/")set(CMAKE_INCLUDE_CURRENT_DIR ON)set(CMAKE_autoMOC ON)set(CMAKE_autoRCC ON)find_package(Qt5 COMPONENTS Quick Core required)qt5_add_resources(RESOURCES qml.qrc)add_executable(${PROJECT_name} "main.cpp" "qml.qrc")qt5_use_modules(${PROJECT_name} Quick Core)target_link_librarIEs(${PROJECT_name} Qt5::Core Qt5::Quick)

这是cmake的输出.

:~/junk/qtquick_hello_cmake$cmake .CMake Error at CMakeLists.txt:11 (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  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.-- Configuring incomplete,errors occurred!See also "/home/.../junk/qtquick_hello_cmake/CMakefiles/CMakeOutput.log".

这表明/opt/Qt5.9.1/确实存在.

:~/junk/qtquick_hello_cmake$cd /opt/Qt5.9.1/5.9.1/:/opt/Qt5.9.1/5.9.1$lsandroID_armv7  androID_x86  gcc_64  Src

这里我使用-DCMAKE选项运行cmake,但输出仍然相同：

:~/junk/qtquick_hello_cmake$cmake -DCMAKE_PREFIX_PATH=/opt/Qt5.9.1/5.9.1/ -DWITH_QT5=1 .CMake Error at CMakeLists.txt:11 (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",errors occurred!See also "/home/.../junk/qtquick_hello_cmake/CMakefiles/CMakeOutput.log".

目录的内容：

:~/junk/qtquick_hello_cmake$lsCMakeCache.txt  CMakefiles  CMakeLists.txt  main.cpp  main.qml  qml.qrc

解决方法 我安装了以下缺少的包：

sudo apt-get install qtbase5-devsudo apt-get install qtdeclarative5-dev

现在不需要附加任何类型的前缀：

:~/junk/qtquick_hello_cmake$cat CMakeLists.txt    cmake_minimum_required(VERSION 2.8.12)    project(qtquick_hello_cmake)    set(CMAKE_INCLUDE_CURRENT_DIR ON)    set(CMAKE_autoMOC ON)    set(CMAKE_autoRCC ON)    find_package(Qt5 COMPONENTS Quick Core required)    qt5_add_resources(RESOURCES qml.qrc)    add_executable(${PROJECT_name} "main.cpp" "qml.qrc")    qt5_use_modules(${PROJECT_name} Quick Core)    target_link_librarIEs(${PROJECT_name} Qt5::Core Qt5::Quick):~/junk/qtquick_hello_cmake$lsbuild  CMakeLists.txt  main.cpp  main.qml  qml.qrc:~/junk/qtquick_hello_cmake$cd build/:~/junk/qtquick_hello_cmake/build$rm -rf *:~/junk/qtquick_hello_cmake/build$cmake ../-- The C compiler IDentification is GNU 4.8.4-- The CXX compiler IDentification is GNU 4.8.4-- Check for working C compiler: /usr/bin/cc-- Check for working C compiler: /usr/bin/cc -- works-- Detecting C compiler ABI info-- Detecting C compiler ABI info - done-- Check for working CXX compiler: /usr/bin/c++-- Check for working CXX compiler: /usr/bin/c++ -- works-- Detecting CXX compiler ABI info-- Detecting CXX compiler ABI info - done-- Configuring done-- Generating done-- Build files have been written to: /home/.../junk/qtquick_hello_cmake/build

错误现在消失了.

谢谢：
https://answers.ros.org/question/236324/could-not-find-a-package-configuration-file-provided-by-qt5widgets/
https://askubuntu.com/questions/508503/whats-the-development-package-for-qt5-in-14-04

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