diff --git a/cmake/modules/AppUtilities.cmake b/cmake/modules/AppUtilities.cmake
index d6a1fc0..b1ac058 100644
--- a/cmake/modules/AppUtilities.cmake
+++ b/cmake/modules/AppUtilities.cmake
@@ -63,6 +63,22 @@ function (add_appstream_file)
string(REGEX REPLACE "\n([^$])" "\n \\1" META_APP_APPDATA_BODY "${META_APP_APPDATA_BODY}")
endif ()
+ # make the day of the last modification the release date
+ set(META_RELEASE_DATE_${META_PROJECT_VARNAME_UPPER} "" CACHE STRING "release date of ${META_PROJECT_NAME}")
+ if (META_RELEASE_DATE_${META_PROJECT_VARNAME_UPPER} STREQUAL "")
+ execute_process(
+ COMMAND
+ sh -c "date --iso-8601 --reference=\"$(find . -type f -not -path '*.git/*' -printf '%T@ %P\n' | sort -n | awk '{print $2}' | tail -n1)\""
+ WORKING_DIRECTORY
+ "${CMAKE_SOURCE_DIR}"
+ OUTPUT_VARIABLE META_RELEASE_DATE
+ )
+ string(STRIP "${META_RELEASE_DATE}" META_RELEASE_DATE)
+ set(META_RELEASE_DATE_${META_PROJECT_VARNAME_UPPER} "${META_RELEASE_DATE}" CACHE STRING "release date of ${META_PROJECT_NAME}" FORCE)
+ else ()
+ set(META_RELEASE_DATE "${META_RELEASE_DATE_${META_PROJECT_VARNAME_UPPER}}")
+ endif ()
+
# create appstream desktop file from template
set(APPSTREAM_FILE "${CMAKE_CURRENT_BINARY_DIR}/resources/${META_ID}.appdata.xml")
configure_file("${APP_APPSTREAM_TEMPLATE_FILE}" "${APPSTREAM_FILE}" @ONLY)
diff --git a/cmake/templates/appdata.xml.in b/cmake/templates/appdata.xml.in
index 91f8eaa..b5a94bb 100644
--- a/cmake/templates/appdata.xml.in
+++ b/cmake/templates/appdata.xml.in
@@ -14,6 +14,6 @@
@META_TARGET_NAME@
-
+