More flexible ability to install CMake modules.

FindMagnum.cmake is not installed by default to avoid the need for root
privileges when installing, enable it with WITH_FIND_MODULE CMake flag.

CMakeLists.txt

@@ -36,6 +36,8 @@ option(TARGET_GLES "Build for OpenGL ES instead of desktop OpenGL" OFF)
 cmake_dependent_option(TARGET_GLES2 "Build for OpenGL ES 2" ON "TARGET_GLES" OFF)
 cmake_dependent_option(TARGET_DESKTOP_GLES "Build for OpenGL ES on desktop" OFF "TARGET_GLES" OFF)
 
+option(WITH_FIND_MODULE "Install FindMagnum.cmake module into CMake's module dir (might require admin privileges)" OFF)
+
 # Parts of the library
 option(WITH_AUDIO "Build Audio library" ON)
 option(WITH_DEBUGTOOLS "Build DebugTools library" ON)
@@ -127,7 +129,7 @@ include(CorradeLibSuffix)
 set(MAGNUM_BINARY_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/bin)
 set(MAGNUM_LIBRARY_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX})
 set(MAGNUM_DATA_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/share/magnum)
-set(MAGNUM_CMAKE_MODULE_INSTALL_DIR ${CMAKE_ROOT}/Modules)
+set(MAGNUM_CMAKE_FIND_MODULE_INSTALL_DIR ${CMAKE_ROOT}/Modules)
 set(MAGNUM_INCLUDE_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/include/Magnum)
 
 add_subdirectory(external)

modules/CMakeLists.txt

@@ -22,6 +22,6 @@
 #   DEALINGS IN THE SOFTWARE.
 #
 
-if(NOT CMAKE_CROSSCOMPILING)
-    install(FILES FindMagnum.cmake DESTINATION ${MAGNUM_CMAKE_MODULE_INSTALL_DIR})
+if(WITH_FIND_MODULE)
+    install(FILES FindMagnum.cmake DESTINATION ${MAGNUM_CMAKE_FIND_MODULE_INSTALL_DIR})
 endif()

modules/FindMagnum.cmake

@@ -78,8 +78,8 @@
 #   directory
 #  MAGNUM_PLUGINS_AUDIOIMPORTER_INSTALL_DIR  - Audio omporter plugin
 #   installation directory
-#  MAGNUM_CMAKE_MODULE_INSTALL_DIR      - Installation dir for CMake
-#   modules
+#  MAGNUM_CMAKE_FIND_MODULE_INSTALL_DIR - Installation dir for CMake
+#   Find* modules
 #  MAGNUM_INCLUDE_INSTALL_DIR           - Header installation directory
 #  MAGNUM_PLUGINS_INCLUDE_INSTALL_DIR   - Plugin header installation
 #   directory
@@ -341,7 +341,7 @@ set(MAGNUM_PLUGINS_FONTCONVERTER_INSTALL_DIR ${MAGNUM_PLUGINS_INSTALL_DIR}/fontc
 set(MAGNUM_PLUGINS_IMAGECONVERTER_INSTALL_DIR ${MAGNUM_PLUGINS_INSTALL_DIR}/imageconverters)
 set(MAGNUM_PLUGINS_IMPORTER_INSTALL_DIR ${MAGNUM_PLUGINS_INSTALL_DIR}/importers)
 set(MAGNUM_PLUGINS_AUDIOIMPORTER_INSTALL_DIR ${MAGNUM_PLUGINS_INSTALL_DIR}/audioimporters)
-set(MAGNUM_CMAKE_MODULE_INSTALL_DIR ${CMAKE_ROOT}/Modules)
+set(MAGNUM_CMAKE_FIND_MODULE_INSTALL_DIR ${CMAKE_ROOT}/Modules)
 set(MAGNUM_INCLUDE_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/include/Magnum)
 set(MAGNUM_PLUGINS_INCLUDE_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/include/Magnum/Plugins)
 mark_as_advanced(FORCE