Cmake: linking shared library

Question

I\'ve done this before a couple of times, but somehow I\'m stuck this time. I have an executable \"myapp\" and a own shared library \"mylib\". In my cmakelists I have the follow

Answer 1

This is a very common question about "make install". Actually, there are 3 ways to link a library to your executable file. First, you may use -l -L flags in simple cases. As Benjamin said you may use LD_LIRARY_PATH and write something like: export LD_LIBRARY_PATH=/usr/local/my_lib. In fact this is not a good way. It's much better to use RPATH. There is a very useful doc page about it. Check it out. Well if you write something like this in your top level CMakeLists.txt, it will solve the problem:

SET(CMAKE_SKIP_BUILD_RPATH  FALSE)
SET(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE) 
SET(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib64")
SET(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
SET(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib64")