Create dummy x2 function where needed in the nr phy simulators

-To avoid including the whole x2 libraries for the corresponding executables

cmake_targets/CMakeLists.txt

@@ -3031,7 +3031,7 @@ add_executable(nr_dlsim
   ${SHLIB_LOADER_SOURCES}
   )   
 target_link_libraries(nr_dlsim
-  -Wl,--start-group UTIL SIMU_COMMON SIMU PHY_COMMON PHY_NR_COMMON PHY_NR PHY_NR_UE SCHED_NR_LIB SCHED_NR_UE_LIB MAC_NR MAC_UE_NR MAC_NR_COMMON RRC_LIB NR_RRC_LIB CONFIG_LIB L2_NR HASHTABLE X2AP_ENB X2AP_LIB -Wl,--end-group
+  -Wl,--start-group UTIL SIMU_COMMON SIMU PHY_COMMON PHY_NR_COMMON PHY_NR PHY_NR_UE SCHED_NR_LIB SCHED_NR_UE_LIB MAC_NR MAC_UE_NR MAC_NR_COMMON RRC_LIB NR_RRC_LIB CONFIG_LIB L2_NR HASHTABLE -Wl,--end-group
   m pthread ${ATLAS_LIBRARIES} ${T_LIB} ${ITTI_LIB} dl
   )
 target_compile_definitions(nr_dlsim PUBLIC -DPHYSICAL_SIMULATOR)
@@ -3049,7 +3049,7 @@ add_executable(nr_prachsim
   ${T_SOURCE}
   ${SHLIB_LOADER_SOURCES})
 target_link_libraries(nr_prachsim  
-   -Wl,--start-group UTIL SIMU_COMMON SIMU PHY_COMMON PHY_NR_COMMON PHY_NR PHY_RU PHY_NR_UE MAC_NR_COMMON SCHED_NR_LIB MAC_UE_NR SCHED_NR_UE_LIB RRC_LIB NR_RRC_LIB L2_NR CONFIG_LIB HASHTABLE X2AP_ENB X2AP_LIB -Wl,--end-group m pthread ${ATLAS_LIBRARIES} ${T_LIB} ${ITTI_LIB} dl)
+   -Wl,--start-group UTIL SIMU_COMMON SIMU PHY_COMMON PHY_NR_COMMON PHY_NR PHY_RU PHY_NR_UE MAC_NR_COMMON SCHED_NR_LIB MAC_UE_NR SCHED_NR_UE_LIB RRC_LIB NR_RRC_LIB L2_NR CONFIG_LIB HASHTABLE -Wl,--end-group m pthread ${ATLAS_LIBRARIES} ${T_LIB} ${ITTI_LIB} dl)
 
 add_executable(nr_ulschsim
   ${OPENAIR1_DIR}/SIMULATION/NR_PHY/ulschsim.c
@@ -3079,7 +3079,7 @@ add_executable(nr_ulsim
   ${SHLIB_LOADER_SOURCES}
   )
 target_link_libraries(nr_ulsim
-  -Wl,--start-group UTIL SIMU_COMMON SIMU PHY_COMMON PHY_NR PHY_NR_COMMON PHY_NR_UE SCHED_NR_LIB SCHED_NR_UE_LIB MAC_NR MAC_UE_NR MAC_NR_COMMON RRC_LIB NR_RRC_LIB CONFIG_LIB L2_NR HASHTABLE X2AP_ENB X2AP_LIB -Wl,--end-group
+  -Wl,--start-group UTIL SIMU_COMMON SIMU PHY_COMMON PHY_NR PHY_NR_COMMON PHY_NR_UE SCHED_NR_LIB SCHED_NR_UE_LIB MAC_NR MAC_UE_NR MAC_NR_COMMON RRC_LIB NR_RRC_LIB CONFIG_LIB L2_NR HASHTABLE -Wl,--end-group
   m pthread ${ATLAS_LIBRARIES} ${T_LIB} ${ITTI_LIB} dl
   )
 target_compile_definitions(nr_ulsim PUBLIC -DPHYSICAL_SIMULATOR)

openair1/SIMULATION/NR_PHY/dlsim.c

@@ -140,6 +140,11 @@ int generate_dlsch_header(unsigned char *mac_header,
                           unsigned char short_padding,
                           unsigned short post_padding){return 0;}
 
+int is_x2ap_enabled(void)
+{
+  return 0;
+}
+
 // needed for some functions
 openair0_config_t openair0_cfg[MAX_CARDS];
 

openair1/SIMULATION/NR_PHY/prachsim.c

@@ -100,6 +100,11 @@ rrc_gNB_process_GTPV1U_CREATE_TUNNEL_RESP(
 
 int8_t nr_mac_rrc_data_ind_ue(const module_id_t module_id, const int CC_id, const uint8_t gNB_index, const int8_t channel, const uint8_t* pduP, const sdu_size_t pdu_len) {return 0;}
 
+int is_x2ap_enabled(void)
+{
+  return 0;
+}
+
 int main(int argc, char **argv){
 
   char c;

openair1/SIMULATION/NR_PHY/ulsim.c

@@ -117,6 +117,11 @@ rrc_gNB_process_GTPV1U_CREATE_TUNNEL_RESP(
   return 0;
 }
 
+int is_x2ap_enabled(void)
+{
+  return 0;
+}
+
 // needed for some functions
 uint16_t n_rnti = 0x1234;
 openair0_config_t openair0_cfg[MAX_CARDS];