Skip to content

Instantly share code, notes, and snippets.

@WesleyCh3n
Created September 13, 2021 13:34
Show Gist options
  • Save WesleyCh3n/de421a3706ee4c08730553032a0b6cf2 to your computer and use it in GitHub Desktop.
Save WesleyCh3n/de421a3706ee4c08730553032a0b6cf2 to your computer and use it in GitHub Desktop.

Can I do "make uninstall" with CMake?

By default, CMake does not provide the "make uninstall" target, so you cannot do this. We do not want "make uninstall" to remove useful files from the system. If you want an "uninstall" target in your project, then nobody prevents you from providing one. You need to delete the files listed in install_manifest.txt file. Here is how to do it. First create file cmake_uninstall.cmake.in in the top-level directory of the project:

if(NOT EXISTS "@CMAKE_BINARY_DIR@/install_manifest.txt")
  message(FATAL_ERROR "Cannot find install manifest: @CMAKE_BINARY_DIR@/install_manifest.txt")
endif()

file(READ "@CMAKE_BINARY_DIR@/install_manifest.txt" files)
string(REGEX REPLACE "\n" ";" files "${files}")
foreach(file ${files})
  message(STATUS "Uninstalling $ENV{DESTDIR}${file}")
  if(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
    exec_program(
      "@CMAKE_COMMAND@" ARGS "-E remove \"$ENV{DESTDIR}${file}\""
      OUTPUT_VARIABLE rm_out
      RETURN_VALUE rm_retval
      )
    if(NOT "${rm_retval}" STREQUAL 0)
      message(FATAL_ERROR "Problem when removing $ENV{DESTDIR}${file}")
    endif()
  else(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
    message(STATUS "File $ENV{DESTDIR}${file} does not exist.")
  endif()
endforeach()

Then in the top-level CMakeLists.txt add the following logic:

# uninstall target
if(NOT TARGET uninstall)
  configure_file(
    "${CMAKE_CURRENT_SOURCE_DIR}/cmake_uninstall.cmake.in"
    "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
    IMMEDIATE @ONLY)

  add_custom_target(uninstall
    COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
endif()

Now you will have an "uninstall" target at the top-level directory of your build tree. Instead of creating an "uninstall" target, Unix users could enter this command in the shell:

xargs rm < install_manifest.txt
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment