--- utils/Makefile	(Asterisk 13.20)
+++ utils/Makefile	(working copy)
@@ -160,3 +160,3 @@
 aelparse.o: _ASTCFLAGS+=-I$(ASTTOPDIR)/res -Wno-unused
-aelparse: LIBS+=-lm
+aelparse: LIBS+=-lm $(AST_CLANG_BLOCKS_LIBS)
 aelparse: aelparse.o aelbison.o pbx_ael.o hashtab.o lock.o ael_main.o ast_expr2f.o ast_expr2.o strcompat.o pval.o extconf.o
@@ -170,2 +170,3 @@
 
+conf2ael: LIBS+=$(AST_CLANG_BLOCKS_LIBS)
 conf2ael: conf2ael.o ast_expr2f.o ast_expr2.o hashtab.o lock.o aelbison.o aelparse.o pbx_ael.o pval.o extconf.o strcompat.o