Adapted from https://github.com/OpenMandrivaAssociation/mediastreamer/blob/master/mediastreamer2-5.3.6-cmake-config-location.patch

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -680,7 +680,7 @@ if(ENABLE_TOOLS AND NOT ANDROID)
 )
 
 include(CMakePackageConfigHelpers)
-set(CMAKE_MODULES_INSTALL_DIR "${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME}/cmake")
+set(CMAKE_MODULES_INSTALL_DIR "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}/")
 configure_package_config_file("cmake/${PROJECT_NAME}Config.cmake.in" "${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
 	INSTALL_DESTINATION "${CMAKE_MODULES_INSTALL_DIR}"
 	PATH_VARS MS2_PLUGINS_DIR