[gprs] Build the SGSN stand-alone and not as part of bsc_hack
Instead of continuing to add more and more functionality to the
bsc_hack binary, we should have the new SGSN code run as a separate
executable.
After this commit we now build a 'osmo_sgsn' executable, using its
own osmo_sgsn.cfg config file.
However, the SGSN is not yet functional, mainly due to the fact that
the BSSGP and GMM code are written with the assumption that there
is a msgb->trx->bts and the according 'sturct gsm_bts' data model
around - which clearly is no longer the case outside of bsc_hack.
diff --git a/openbsc/src/gb_proxy_main.c b/openbsc/src/gb_proxy_main.c
index 8f03060..fe72e02 100644
--- a/openbsc/src/gb_proxy_main.c
+++ b/openbsc/src/gb_proxy_main.c
@@ -64,7 +64,7 @@
"This is free software: you are free to change and redistribute it.\n"
"There is NO WARRANTY, to the extent permitted by law.\n";
-static char *config_file = "gb_proxy.cfg";
+static char *config_file = "osmo_gbproxy.cfg";
static struct gbproxy_config gbcfg;
/* Pointer to the SGSN peer */