Linking with CMakeLists: ld cannot find library

Question

I have a CMakeLists.txt file, with the following:

target_link_libraries(${PROJECT_NAME} OpenNI2)

When I run cmake

Answer 1

That's because when linking, the linker doesn't look in the current directory but only in a set of predefined directories.

You need to tell CMake where the library is, for example by giving the full path to the library in the target_link_library command, or adding it as an imported library.