diff --git a/configure.ac b/configure.ac
index fbddb34..c09b27f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -20,6 +20,7 @@
 AC_PROG_CC
 
 # Checks for libraries.
+PKG_CHECK_MODULES(LIBOSMOCODEC, libosmocodec >= 0.1.25)
 
 # Checks for header files.
 AC_CHECK_HEADERS([stdint.h stdlib.h string.h unistd.h])
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	\