darling/cmake/InstallSymlink.cmake
Lubos Dolezel abf5770f99 Fix #129
2016-02-27 20:41:36 +01:00

42 lines
1.8 KiB
CMake

# This macro can be used to install symlinks, which turns out to be
# non-trivial due to CMake version differences and limitations on how
# files can be installed when building binary packages.
#
# The rule for binary packaging is that files (including symlinks) must
# be installed with the standard CMake install() macro.
#
# The rule for non-binary packaging is that CMake 2.6 cannot install()
# symlinks, but can create the symlink at install-time via scripting.
# Though, we assume that CMake 2.6 isn't going to be used to generate
# packages because versions later than 2.8.3 are superior for that purpose.
#
# _filepath: the absolute path to the file to symlink
# _sympath: absolute path of the installed symlink
macro(InstallSymlink _filepath _sympath)
get_filename_component(_symname ${_sympath} NAME)
get_filename_component(_installdir ${_sympath} PATH)
if (BINARY_PACKAGING_MODE)
execute_process(COMMAND "${CMAKE_COMMAND}" -E create_symlink
${_filepath}
${CMAKE_CURRENT_BINARY_DIR}/${_symname})
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${_symname}
DESTINATION ${_installdir})
else ()
# scripting the symlink installation at install time should work
# for CMake 2.6.x and 2.8.x
install(CODE "
if (\"\$ENV{DESTDIR}\" STREQUAL \"\")
execute_process(COMMAND \"${CMAKE_COMMAND}\" -E create_symlink
${_filepath}
${_installdir}/${_symname})
else ()
execute_process(COMMAND \"${CMAKE_COMMAND}\" -E create_symlink
${_filepath}
\$ENV{DESTDIR}/${_installdir}/${_symname})
endif ()
")
endif ()
endmacro(InstallSymlink)