--- a/CMakeLists.txt	Sat Jul 02 19:05:05 2022 +0300
+++ b/CMakeLists.txt	Sun Jul 03 12:20:26 2022 +0300
@@ -182,6 +182,14 @@
 	WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
 add_dependencies(${TARGET_NAME} linelength)
 
+add_custom_target(indentlevel ALL
+	COMMAND python3
+		"${CMAKE_SOURCE_DIR}/tools/indentlevel.py"
+		${SOURCE_FILES}
+		${HEADER_FILESl}
+	WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
+add_dependencies(${TARGET_NAME} indentlevel)
+
 # Collect the current hg revision into hginfo.h
 add_custom_target(revision_check ALL
 	COMMAND python3 "${CMAKE_SOURCE_DIR}/tools/updaterevision.py" --cwd "$(CMAKE_SOURCE_DIR)" hginfo.h