WhyCan Forum(哇酷开发者社区)

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CMakeLists.txt 链接Ubuntu下qt5的库

set(CMAKE_C_COMPILER /usr/bin/gcc)
set(CMAKE_CXX_COMPILER /usr/bin/g++)
set(DQT_QMAKE_EXECUTABL /usr/bin/qmake)
set(Qt5Core_DIR /home/xiaoguoguo/Qt5.6.3/5.6.3/gcc_64/lib/cmake/Qt5Core)
find_package(Qt5Core REQUIRED)
target_link_libraries(${PROJECT_NAME} Qt::5Core)

能生成出来Makefile，make之后成功编译。
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CMakeLists.txt 链接buildroot下qt5的库
set(CMAKE_C_COMPILER /home/xiaoguoguo/arm926t/buildroot-2017.11/output/host/bin/arm-926t-linux-gnueabi-gcc)
set(CMAKE_CXX_COMPILER /home/xiaoguoguo/arm926t/buildroot-2017.11/output/host/bin/arm-926t-linux-gnueabi-g++)
set(DQT_QMAKE_EXECUTABL /home/xiaoguoguo/arm926t/buildroot-2017.11/output/host/bin/qmake)
set(Qt5Core_DIR /home/xiaoguoguo/arm926t/buildroot-2017.11/output/build/qt5base-5.9.2/lib/cmake/Qt5Core/)
find_package(Qt5Core REQUIRED)
target_link_libraries(${PROJECT_NAME} Qt5Core)
Makefile生成失败，提示内容如下

CMake Error at /home/xiaoguoguo/arm926t/buildroot-2017.11/output/build/qt5base-5.9.2/lib/cmake/Qt5Core/Qt5CoreConfig.cmake:27 (message):
  The imported target "Qt5::Core" references the file

     "/home/xiaoguoguo/arm926t/buildroot-2017.11/output/build/qt5base-5.9.2/include/qt5/"

  but this file does not exist.  Possible reasons include:

  * The file was deleted, renamed, or moved to another location.

  * An install or uninstall procedure did not complete successfully.

  * The installation package was faulty and contained

     "/home/xiaoguoguo/arm926t/buildroot-2017.11/output/build/qt5base-5.9.2/lib/cmake/Qt5Core/Qt5CoreConfig.cmake"

  but not all the files it references.

Call Stack (most recent call first):
  /home/xiaoguoguo/arm926t/buildroot-2017.11/output/build/qt5base-5.9.2/lib/cmake/Qt5Core/Qt5CoreConfig.cmake:63 (_qt5_Core_check_file_exists)
  CMakeLists.txt:12 (find_package)

-- Configuring incomplete, errors occurred!
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Qt5CoreConfig.cmake:27 (message):
  The imported target "Qt5::Core" references the file
根据这个错误提示找到Qt5CoreConfig.cmake:27

25 macro(_qt5_Core_check_file_exists file)
26     if(NOT EXISTS "${file}" )
27         message(FATAL_ERROR "The imported target \"Qt5::Core\" references the file
28    \"${file}\"

然后百度一下第27行，大多数是说该文件的

14    get_filename_component(_qt5Core_install_prefix "${CMAKE_CURRENT_LIST_DIR}/../../../" ABSOLUTE)

这一句有问题。

Qt5CoreConfig.cmake从编译完buildroot就没有更改过，该怎么更正呢？