Adapted from https://github.com/OpenMandrivaAssociation/bctoolbox/blob/master/bctoolbox-5.3.6-cmake-fix_cmake_path.patch

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -167,7 +167,7 @@
 endif()
 
 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 CMAKE_MODULES_INSTALL_DIR