调试查找 package() 错误
注意： 显示的 CMake 错误消息已包含非标准库/工具安装路径的修复。以下示例仅演示了更详细的 CMake find_package() 输出。
CMake 内部支持的包/模块
cmake_minimum_required(VERSION 2.8)
project(FindPackageTest)
find_package(Boost REQUIRED)
给出了一些错误
CMake Error at [...]/Modules/FindBoost.cmake:1753 (message):
Unable to find the requested Boost libraries.
Unable to find the Boost header files. Please set BOOST_ROOT to the root
directory containing Boost or BOOST_INCLUDEDIR to the directory containing
Boost's headers.
而且你想知道它试图找到库的位置，你可以检查你的软件包是否有像 Boost 模块那样的 _DEBUG 选项来获得更详细的输出
$ cmake -D Boost_DEBUG=ON ..
CMake 启用包/库
如果以下代码（将 Xyz 替换为你的库 ）
cmake_minimum_required(VERSION 2.8)
project(FindPackageTest)
find_package(Xyz REQUIRED)
给出了一些错误
CMake Error at CMakeLists.txt:4 (find_package):
By not providing "FindXyz.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Xyz", but
CMake did not find one.
Could not find a package configuration file provided by "Xyz" with any of
the following names:
XyzConfig.cmake
xyz-config.cmake
Add the installation prefix of "Xyz" to CMAKE_PREFIX_PATH or set "Xyz_DIR"
to a directory containing one of the above files. If "Xyz" provides a
separate development package or SDK, be sure it has been installed.
而且你想知道它在哪里找到了库，你可以使用未记录的 CMAKE_FIND_DEBUG_MODE 全局变量来获得更详细的输出
$ cmake -D CMAKE_FIND_DEBUG_MODE=ON ..