message(STATUS "processing version.cmake")

if(DEFINED ENV{CANONICALVERSION})
	set(CANONICAL_VERSION_STRING $ENV{CANONICALVERSION})
else()
	execute_process(
		COMMAND bash ${CMAKE_TOP_SRC_DIR}/scripts/get-version.sh
		WORKING_DIRECTORY ${CMAKE_TOP_SRC_DIR}
		OUTPUT_VARIABLE CANONICAL_VERSION_STRING
		OUTPUT_STRIP_TRAILING_WHITESPACE
	)
endif()

if(DEFINED ENV{CANONICALVERSION_4})
	set(CANONICAL_VERSION_STRING_4 $ENV{CANONICALVERSION_4})
else()
	execute_process(
		COMMAND bash ${CMAKE_TOP_SRC_DIR}/scripts/get-version.sh 4
		WORKING_DIRECTORY ${CMAKE_TOP_SRC_DIR}
		OUTPUT_VARIABLE CANONICAL_VERSION_STRING_4
		OUTPUT_STRIP_TRAILING_WHITESPACE
	)
endif()

configure_file(${SRC} ${DST} @ONLY)
if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
	execute_process(
		COMMAND cat ${CMAKE_TOP_SRC_DIR}/packaging/windows/subsurface.nsi.in
		COMMAND sed -e "s/VERSIONTOKEN/${CANONICAL_VERSION_STRING}/"
		COMMAND sed -e "s/PRODVTOKEN/${CANONICAL_VERSION_STRING_4}/"
		OUTPUT_FILE ${CMAKE_BINARY_DIR}/staging/subsurface.nsi
	)
endif()