What is cmake_install.cmake

问题:

I wrote a very simple HelloWorld.c program and ran Cmake. It created a cmake_install.cmake file in my build directory. Can somebody explain to me why CMake generated the file cmake_install.cmake? What is it's purpose and how can I use it?

CMakelists.txt :

cmake_minimum_required(VERSION 3.0)
PROJECT(FirstExample)
add_executable(prog first.c) 

Thanks!

回答1:

You don't use cmake_install.cmake directly. It contains instructions that cmake uses to install your program.

With your current CMakeLists.txt, the generated file doesn't do much. To create a useful install you would need to add more INSTALL commands to your CMakeLists.txt using the syntax below.

INSTALL(TARGETS targets... [EXPORT <export-name>]
    [[ARCHIVE|LIBRARY|RUNTIME|FRAMEWORK|BUNDLE|
      PRIVATE_HEADER|PUBLIC_HEADER|RESOURCE]
     [DESTINATION <dir>]
     [INCLUDES DESTINATION [<dir> ...]]
     [PERMISSIONS permissions...]
     [CONFIGURATIONS [Debug|Release|...]]
     [COMPONENT <component>]
     [OPTIONAL] [NAMELINK_ONLY|NAMELINK_SKIP]
    ] [...])

For further reading on this command, check out the documentation site and wiki.

回答2:

As previous answer tells, the cmake_install.cmake contains the commands generated by install command from your CMakeLists.txt.

You can execute it by cmake -P cmake_install.cmake and it performs the installation of your project even on windows.

https://cmake.org/pipermail/cmake/2007-April/013657.html