Support old CMake versions without TIMESTAMP
@@ -6,6 +6,13 @@ MACRO (TODAY RESULT)
if (DEFINED ENV{SOURCE_DATE_EPOCH} AND NOT WIN32)
EXECUTE_PROCESS(COMMAND "date" "-u" "-d" "@$ENV{SOURCE_DATE_EPOCH}" "+%Y-%m-%d"
OUTPUT_VARIABLE ${RESULT} OUTPUT_STRIP_TRAILING_WHITESPACE)
+ elseif(CMAKE_VERSION VERSION_LESS "2.8.11")
+ if (WIN32)
+ message(FATAL_ERROR "Your CMake version is too old. Please update to a more recent version >= 2.8.11")
+ else()
+ EXECUTE_PROCESS(COMMAND "date" "-u" "+%Y-%m-%d"
+ OUTPUT_VARIABLE ${RESULT} OUTPUT_STRIP_TRAILING_WHITESPACE)
+ endif()
else()
STRING(TIMESTAMP ${RESULT} "%Y-%m-%d" UTC)
endif()
