abort execution when an unknown option is passed via the command line: add config_check_cmdlineopt API to config module, create lte-softmodem-common.c source to remove duplicate code in lte-softmodem.c and lte-uesoftmodem.c, fix segfaults in exec_function of lte-uesoftmodem

targets/COMMON/create_tasks.c

@@ -23,6 +23,7 @@
 # include "intertask_interface.h"
 # include "create_tasks.h"
 # include "common/utils/LOG/log.h"
+# include "targets/RT/USER/lte-softmodem.h"
 
 # ifdef OPENAIR2
 #   if defined(ENABLE_USE_MME)
@@ -43,7 +44,6 @@
 # endif
 # include "enb_app.h"
 
-extern int emulate_rf;
 
 int create_tasks(uint32_t enb_nb)
 {
@@ -79,7 +79,7 @@ int create_tasks(uint32_t enb_nb)
           LOG_E(S1AP, "Create task for S1AP failed\n");
           return -1;
         }
-        if(!emulate_rf){
+        if(!(get_softmodem_params()->emulate_rf)){
           if (itti_create_task (TASK_UDP, udp_eNB_task, NULL) < 0) {
             LOG_E(UDP_, "Create task for UDP failed\n");
             return -1;