diff -dur asterisk-15.2.2.orig/main/Makefile asterisk-15.2.2/main/Makefile
--- asterisk-15.2.2.orig/main/Makefile	2018-03-12 10:54:07.000000000 +0100
+++ asterisk-15.2.2/main/Makefile	2018-03-12 11:20:07.000000000 +0100
@@ -273,7 +273,7 @@
 
 $(ASTPJ_LIB).$(ASTPJ_SO_VERSION): _ASTLDFLAGS+=-Wl,-soname=$(ASTPJ_LIB).$(ASTPJ_SO_VERSION) $(PJ_LDFLAGS)
 $(ASTPJ_LIB).$(ASTPJ_SO_VERSION): _ASTCFLAGS+=-fPIC -DAST_MODULE=\"asteriskpj\" -DAST_NOT_MODULE $(PJ_CFLAGS)
-$(ASTPJ_LIB).$(ASTPJ_SO_VERSION): LIBS+=$(PJPROJECT_LDLIBS) $(OPENSSL_LIB) $(UUID_LIB) -lm -lpthread $(RT_LIB)
+$(ASTPJ_LIB).$(ASTPJ_SO_VERSION): LIBS+=$(PJPROJECT_LDLIBS) -lbcg729 $(OPENSSL_LIB) $(UUID_LIB) -lm -lpthread $(RT_LIB)
 ifeq ($(GNU_LD),1)
     $(ASTPJ_LIB).$(ASTPJ_SO_VERSION): SO_SUPPRESS_SYMBOLS=-Wl,--version-script,libasteriskpj.exports,--warn-common
 endif