project(NetRadiant C CXX)
option(BUILD_RADIANT "Build the gui" ON)
-if (NOT CMAKE_INSTALL_PREFIX)
- set(CMAKE_INSTALL_PREFIX "${PROJECT_SOURCE_DIR}/install")
+if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+ set(CMAKE_INSTALL_PREFIX "${PROJECT_SOURCE_DIR}/install" CACHE PATH "..." FORCE)
endif ()
#-----------------------------------------------------------------------