+ [with_gsm="check"])
+
+AS_IF([test "x$with_gsm" != xno],
+ [AC_CHECK_FILE([openbsc/include/openbsc/gsm_data.h],
+ [with_gsm="yes"],
+ [if test "x$with_gsm" != xcheck ; then
+ AC_MSG_FAILURE(
+ [--with-gsm was given, but openbsc/include/openbsc/gsm_data.h was not found! Pleas link OpenBSC source directory to LCR source directory: ln -s path_to_openbsc/openbsc/ .])
+ fi
+ ])
+ ])