Add required OpenBSC files and lib to the build

Note that since the channel drivers are shared objects,
you'll need to compile OpenBSC with:

$ make CFLAGS=-fPIC

(or whatever is needed for your platform ...)

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>

Makefile

@@ -1,4 +1,11 @@
 ASTSRC?=../asterisk
+OPENBSCSRC?=../openbsc
+
+
+OPENBSC_SRC = bsc_init.c vty_interface.c vty_interface_layer3.c
+OPENBSC_LIBS = libmsc.a libbsc.a libmsc.a libvty.a
+OPENBSC_INCLUDES = -I$(OPENBSCSRC)/include
+OPENBSC_LDFLAGS = -ldl -ldbi -lcrypt
 
 
 ASTTOPDIR=$(ASTSRC)
@@ -45,4 +52,8 @@ all: _all
 
 include $(ASTTOPDIR)/Makefile.moddir_rules
 
+# Add OpenBSC stuff in the mix
+chan_openbsc.o:: _ASTCFLAGS+=$(OPENBSC_INCLUDES)
+chan_openbsc.so: $(addprefix $(OPENBSCSRC)/src/,$(patsubst %.c,%.o,$(OPENBSC_SRC))) $(addprefix $(OPENBSCSRC)/src/,$(OPENBSC_LIBS))
+chan_openbsc.so:: _ASTLDFLAGS+=$(OPENBSC_LDFLAGS)
 

chan_openbsc.c

@@ -17,6 +17,8 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision: $")
 #include <pthread.h>
 #include <unistd.h>
 
+#include <openbsc/gsm_data.h>
+
 #include "asterisk/channel.h"
 #include "asterisk/logger.h"
 #include "asterisk/module.h"
@@ -27,6 +29,9 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision: $")
 /* ---------------------------------------------------------------------{{{ */
 
 
+struct gsm_network *bsc_gsmnet = 0;
+
+
 /* Main thread */
 static int g_done;
 static pthread_t g_main_tid;