MacOS与qt5失败

Question

我试图使用cmake构建cpp/qt5 5项目，但是编译返回一个有关QT5的错误。

我安装了国产QT5，

当我这么做时：

brew --prefix qt5

我得到了

 /usr/local/Cellar/qt5/5.6.0

所以我在我的项目的build文件夹中，我做：

cmake .. -DCMAKE_PREFIX_PATH=$(brew --prefix qt5) -G Xcode -DBUILD_TESTS=ON -DBUILD_TESTS_COVERAGE=off

请返回此错误：

    CMake Error at CMakeLists.txt:124 (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.

CMakelist.txt中的错误行：

    ## QT5 ##

find_package(Qt5 COMPONENTS Core Gui Widgets Concurrent Qml Quick REQUIRED)

set_target_properties(${BIN_NAME} PROPERTIES AUTOMOC ON)
set_target_properties(${BIN_NAME} PROPERTIES AUTOUIC ON)
target_link_libraries(${BIN_NAME} PUBLIC Qt5::Core PUBLIC Qt5::Widgets PUBLIC Qt5::Gui PUBLIC Qt5::Qml PUBLIC Qt5::Quick PUBLIC Qt5::Concurrent)

#########

我还尝试在命令中添加一个-DQt5_DIR=$(brew --prefix qt5)，结果是相同的。

有什么想法吗？谢谢

Answer 1

尝试：

-DQt5_DIR=$(brew --prefix qt5)/lib/cmake/Qt5

注意，在使用set_target_properties时可以指定多个属性，在使用target_link_libraries时可以为多个值指定PUBLIC作用域。

set_target_properties(${BIN_NAME}
    PROPERTIES
    AUTOMOC ON
    AUTOUIC ON
)
target_link_libraries(${BIN_NAME}
    PUBLIC
    Qt5::Core
    Qt5::Widgets
    Qt5::Gui
    Qt5::Qml
    Qt5::Quick
    Qt5::Concurrent
)