ament_cmake_symlink_install.cmake breaks CPack

[stewpend0us]

When I do a symlink install and then try to cpack: ament_cmake_symlink_install.cmake fails.

When cpack runs CMAKE_CURRENT_BINARY_DIR is not set. This casuses ament to try to create symlink_install_manifest.txt in the root directory which causes it (and cpack) to fail.

Error message:

CMake Error at /.../.../ament_cmake_symlink_install/ament_cmake_symlink_install.cmake:5 (file):
  file failed to open for writing (Permission denied):

    /symlink_install_manifest.txt

Work around:

manually create /symlink_install_manifest.txt that way ament will find the file and write to it and cpack will not fail.

better yet: ln -s /dev/null /symlink_install_manifest.txt

[stewpend0us]

Welp. Turns out while this does get me an install file the install file doesn't have any content. I gues CMake/CPack aren't capable of following symlinks...