+# check for gsm-bs
+AC_ARG_WITH([gsm-bs],
+ [AS_HELP_STRING([--with-gsm-bs],
+ [compile with OpenBSC support @<:@default=check@:>@])
+ ],
+ [],
+ [with_gsm_bs="check"])
+
+AS_IF([test "x$with_gsm_bs" != xno],
+ [AC_MSG_CHECKING(openbsc/include/openbsc/gsm_data.h)
+ if test -e openbsc/include/openbsc/gsm_data.h; then
+ with_gsm_bs="yes"
+ AC_MSG_RESULT(yes)
+ elif test "x$with_gsm_bs" != xcheck ; then
+ AC_MSG_FAILURE([--with-gsm-bs was given, but openbsc/include/openbsc/gsm_data.h was not found! Please link OpenBSC and libosmocore source directory to LCR source directory: ln -s path_to_openbsc/openbsc/ openbsc ; ln -s patch_to_libosmocore libosmocore])
+ else
+ AC_MSG_RESULT(no)
+ fi
+ ])
+
+AM_CONDITIONAL(ENABLE_GSM_BS, test "x$with_gsm_bs" == "xyes" )
+
+# check for gsm-ms
+AC_ARG_WITH([gsm-ms],
+ [AS_HELP_STRING([--with-gsm-ms],
+ [compile with Osmocom-bb support @<:@default=check@:>@])
+ ],
+ [],
+ [with_gsm_ms="check"])
+
+AS_IF([test "x$with_gsm_ms" != xno],
+ [AC_MSG_CHECKING(layer23/include/osmocom/bb/common/osmocom_data.h)
+ if test -e layer23/include/osmocom/bb/common/osmocom_data.h; then
+ with_gsm_ms="yes"
+ AC_MSG_RESULT(yes)
+ elif test "x$with_gsm_ms" != xcheck ; then
+ AC_MSG_FAILURE([--with-gsm-ms was given, but layer23/include/osmocom/bb/common/osmocom_data.h was not found! Please link Osmocom-BB and libosmocore source directory to LCR source directory: ln -s path_to_osmocom-bb/src/host/layer23/ layer23 ; ln -s path_to_libosmocore libosmocore])
+ else
+ AC_MSG_RESULT(no)
+ fi
+ ])
+
+AM_CONDITIONAL(ENABLE_GSM_MS, test "x$with_gsm_ms" == "xyes" )
+
+AM_CONDITIONAL(ENABLE_GSM, test "x$with_gsm_bs" == "xyes" -o "x$with_gsm_ms" == "xyes")
+
+# check for ss5
+AC_ARG_WITH([ss5],
+ [AS_HELP_STRING([--with-ss5],
+ [compile with CCITT No. 5 support @<:@default=no@:>@])
+ ],
+ [],
+ [with_ss5="check"])
+
+AM_CONDITIONAL(ENABLE_SS5, test "x$with_ss5" == "xyes" )
+