2 files changed, 4 insertions, 0 deletions
diff --git a/embed.fnc b/embed.fnc
index aed661b77c..f727f00a1b 100644
--- a/embed.fnc
+++ b/embed.fnc
@@ -11,6 +11,7 @@
 :	m		Implemented as a macro - no export, no
 :			proto, no #define
 :	d		function has documentation with its source
+:	D		function is deprecated
 :	s		static function, should have an S_ prefix in
 :			source file; for macros (m), suffix the usage
 :			example with a semicolon
diff --git a/embed.pl b/embed.pl
index 50da23207d..9c55cb4b65 100755
--- a/embed.pl
+++ b/embed.pl
@@ -253,6 +253,9 @@ sub write_protos {
 	if ( $flags =~ /r/ ) {
 	    push @attrs, "__attribute__noreturn__";
 	}
+	if ( $flags =~ /D/ ) {
+	    push @attrs, "__attribute__deprecated__";
+	}
 	if ( $is_malloc ) {
 	    push @attrs, "__attribute__malloc__";
 	}