Add dependency to libosmocodec (part of libosmocore)

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/src/Makefile.am b/src/Makefile.am
index 13b69bd..842cbbe 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,5 +1,6 @@
 INCLUDES = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)
-AM_CFLAGS=-Wall
+AM_CFLAGS=-Wall $(LIBOSMOCODEC_CFLAGS)
+AM_LDFLAGS=$(LIBOSMOCODEC_LIBS)
 
 bin_PROGRAMS = gapk
 gapk_SOURCES =	main.c	\