CMake add depedency to the install target

Question

I've got the following problem using cmake. I use UseDoxygen from http://tobias.rautenkranz.ch/cmake/doxygen/ to generate the documentation for my library. This works fine, but know I want to realize the following: When I call "make install" I want to build to Documentation and install it too. Therefore I add

install(DIRECTORY ${DOXYFILE_OUTPUT_DIR}/${DOXYFILE_HTML_DIR} DESTINATION share/doc/mylib/)
add_dependencies(install doc) 

to my CMakeLists.txt. This results in an error:

  CMake Error at CMakeModules/UseDoxygen.cmake:145 (add_dependencies):
  add_dependencies Adding dependency to non-existent target: install
Call Stack (most recent call first):
  CMakeLists.txt:141 (include)

Is it possible to get a easy workaround for this? Because if the targets are not connected the install step installs nothing unless "make doc" is done manually befor calling "make install".

regards Grisu

Answer 1

We build our documentation by adding it with add_custom_target with the ALL option specified so it builds with the all target.

Then to install, it's just the install command. There is no need to add anything to the install target.

If you add the documentation to the all target, then doing make install will also build the documentation.