CMAKE_PREFIX_PATH

CMAKE_PREFIX_PATH is used by CMake to identify the location of CMake package configurations. It has a similar purpose to LIBRARY_PATH and CPATH. It is used to locate packages and headers at compile time.

CMAKE_PREFIX_PATH is organized as a colon-separated list.

export CMAKE_PREFIX_PATH="/path1:/path2:/path3"

CMAKE_PREFIX_PATH contains three paths in this example.