File: GSettings.cmake

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# See: https://raw.githubusercontent.com/ammonkey/marlin/master/cmake/GSettings.cmake
# GSettings.cmake, CMake macros written for Marlin, feel free to re-use them.

option (GSETTINGS_LOCALINSTALL "Install GSettings Schemas locally instead of to the GLib prefix" ON)

option (GSETTINGS_COMPILE "Compile GSettings Schemas after installation" ${GSETTINGS_LOCALINSTALL})

if(GSETTINGS_LOCALINSTALL)
	message(STATUS "GSettings schemas will be installed locally.")
endif()

if(GSETTINGS_COMPILE)
	message(STATUS "GSettings shemas will be compiled.")
endif()

macro(add_schema SCHEMA_NAME)

	set(PKG_CONFIG_EXECUTABLE pkg-config)
	# Have an option to not install the schema into where GLib is
	if (GSETTINGS_LOCALINSTALL)
		SET (GSETTINGS_DIR "${CMAKE_INSTALL_PREFIX}/share/glib-2.0/schemas/")
	else (GSETTINGS_LOCALINSTALL)
		execute_process (COMMAND ${PKG_CONFIG_EXECUTABLE} glib-2.0 --variable prefix OUTPUT_VARIABLE _glib_prefix OUTPUT_STRIP_TRAILING_WHITESPACE)
		SET (GSETTINGS_DIR "${_glib_prefix}/share/glib-2.0/schemas/")
	endif (GSETTINGS_LOCALINSTALL)

	# Run the validator and error if it fails
	execute_process (COMMAND ${PKG_CONFIG_EXECUTABLE} gio-2.0 --variable glib_compile_schemas  OUTPUT_VARIABLE _glib_comple_schemas OUTPUT_STRIP_TRAILING_WHITESPACE)
	execute_process (COMMAND ${_glib_comple_schemas} --dry-run --schema-file=${CMAKE_CURRENT_SOURCE_DIR}/${SCHEMA_NAME} ERROR_VARIABLE _schemas_invalid OUTPUT_STRIP_TRAILING_WHITESPACE)

	if (_schemas_invalid)
	  message (SEND_ERROR "Schema validation error: ${_schemas_invalid}")
	endif (_schemas_invalid)

	# Actually install and recomple schemas
	message (STATUS "GSettings schemas will be installed into ${GSETTINGS_DIR}")
	install (FILES ${CMAKE_CURRENT_SOURCE_DIR}/${SCHEMA_NAME} DESTINATION ${GSETTINGS_DIR} OPTIONAL)

	if (GSETTINGS_COMPILE)
		install (CODE "message (STATUS \"Compiling GSettings schemas\")")
		install (CODE "execute_process (COMMAND ${_glib_comple_schemas} ${GSETTINGS_DIR})")
	endif ()
endmacro()