cmake 文件应该安装在哪里？

cmake 文件应该安装在哪里？我目前有安装目标

cmake_minimum_required(VERSION 2.8.10)
project(projectname)
include(CMakePackageConfigHelpers)
include(GNUInstallDirs)

add_library(projectnameINTERFACE)
target_include_directories(projectnameINTERFACE
        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/projectname>
        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/>
)


configure_package_config_file(projectnameConfig.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/projectnameConfig.cmake INSTALL_DESTINATION ${CMAKE_INSTALL_PREFIX})
install(TARGETS projectnameEXPORT projectname-targets)

install(EXPORT projectname-targets FILE projectnameTargets.cmake DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/cmake)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/projectnameConfig.cmake DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/cmake)
install(DIRECTORY ./ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/projectname FILES_MATCHING PATTERN "*.h" PATTERN ".git" EXCLUDE)

是路径${CMAKE_INSTALL_PREFIX}/share/projectname/cmake正确的？

对于 Windows 版本，应该安装CMAKE_INSTALL_PREFIX=C:/libs/project。在 Linux 中安装时使用CMAKE_INSTALL_PREFIX=/usr or /usr/local，我不确定 cmake 文件是否应该安装在/usr/share/cmake或类似的文件夹。

最后，它应该适用于这两种方法（/usr and path/to/libdir）以合理的方式。

根据官方 cmake 文档，有几种可能的方式来安装这些 cmake 文件。为了使用以下方式找到图书馆，位置很重要find_package()命令。根据平台的不同，可能的位置有：

<prefix>/                                                       (Windows)
<prefix>/(cmake|CMake)/                                         (Windows)
<prefix>/<name>*/                                               (Windows)
<prefix>/<name>*/(cmake|CMake)/                                 (Windows)
<prefix>/(lib/<arch>|lib*|share)/cmake/<name>*/                 (Unix)
<prefix>/(lib/<arch>|lib*|share)/<name>*/                       (Unix)
<prefix>/(lib/<arch>|lib*|share)/<name>*/(cmake|CMake)/         (Unix)
<prefix>/<name>*/(lib/<arch>|lib*|share)/cmake/<name>*/         (Windows/Unix)
<prefix>/<name>*/(lib/<arch>|lib*|share)/<name>*/               (Windows/Unix)
<prefix>/<name>*/(lib/<arch>|lib*|share)/<name>*/(cmake|CMake)/ (Windows/Unix)
<prefix>/<name>.framework/Resources/                            (macOS)
<prefix>/<name>.framework/Resources/CMake/                      (macOS)
<prefix>/<name>.framework/Versions/*/Resources/                 (macOS)
<prefix>/<name>.framework/Versions/*/Resources/CMake/           (macOS)
<prefix>/<name>.app/Contents/Resources/                         (macOS)
<prefix>/<name>.app/Contents/Resources/CMake/                   (macOS)

前缀由以下定义CMAKE_INSTALL_PREFIX变量默认为C:/Program Files/${PROJECT_NAME}在 Windows 和/usr/local在 Unix 上。

在我的 Arch Linux 系统上，大多数库都使用<prefix>/lib*/cmake/<name>*/（Unix 风格）位置。对于 Windows 个人来说，我更喜欢<prefix>/cmake地点。

有关更多详细信息，我建议您阅读 CMake 版本的官方文档（对于 v3.14，请参阅下面参考文献中的链接）。

参考:

1. https://cmake.org/cmake/help/v3.14/variable/CMAKE_INSTALL_PREFIX.html https://cmake.org/cmake/help/v3.14/variable/CMAKE_INSTALL_PREFIX.html
2. https://cmake.org/cmake/help/v3.14/command/find_package.html?highlight=find_package#id5 https://cmake.org/cmake/help/v3.14/command/find_package.html?highlight=find_package#id5