+if ENABLE_GSM
+
+GSM_INCLUDE +=
+
+GSM_SOURCE += gsm_audio.c gsm.cpp gsm_conf.c
+
+GSM_LIB += /usr/lib/libgsm.a
+
+#gsm_audio.po: gsm_audio.c gsm_audio.h
+# $(CC) -D_GNU_SOURCE -fPIC -c gsm_audio.c -o gsm_audio.po
+
+endif
+
+if ENABLE_GSM_BS
+
+GSM_INCLUDE += -DWITH_GSM_BS -I./openbsc/include -I./libosmocore/include -I./openbsc
+
+GSM_SOURCE += gsm_bs.cpp
+
+endif
+
+if ENABLE_GSM_MS
+
+GSM_INCLUDE += -DPACKAGE_VERSION=0 -DWITH_GSM_MS -I./layer23/include -I./libosmocore/include
+
+GSM_SOURCE += gsm_ms.cpp layer23/src/mobile/app_mobile.c
+
+GSM_LIB += ./layer23/src/mobile/libmobile.a \
+ ./layer23/src/common/liblayer23.a \
+ ./libosmocore/build-host/src/.libs/libosmocore.a \
+ ./libosmocore/build-host/src/vty/.libs/libosmovty.a \
+ ./libosmocore/build-host/src/codec/.libs/libosmocodec.a
+
+endif
+
+if ENABLE_SS5
+
+SS5_INCLUDE = -DWITH_SS5
+
+SS5_SOURCE = ss5.cpp ss5_encode.c ss5_decode.c
+
+endif