linux windows example - How to use CMAKE_INSTALL_PREFIX
There are two ways to use this variable:
passing it as a command line argument just like Job mentioned:
cmake -DCMAKE_INSTALL_PREFIX=< install_path > ..
assigning value to it in
SET(CMAKE_INSTALL_PREFIX < install_path >)
But do remember to place it BEFORE
PROJECT(< project_name>)command, otherwise it will not work!
I want to generate Makefile with install target, making installation to /usr instead of default /usr/local. Assuming that build directory is done in the source subdirectory, I execute:
cmake -DCMAKE_INSTALL_PREFIX:PATH=/usr ..
Now I execute:
make make install
All files are still installed to usr/local. What is wrong?
Edit: There is no CMAKE_INSTALL_PREFIX in any of CMakeLists.txt project files. Before running cmake, I delete everything from the output directory. install directives in CMakeLists.txt look like:
install(TARGETS mylibrary DESTINATION lib)