diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2545cd693a..8cdc796a5b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1181,7 +1181,6 @@ set(NR_L2_SRC_UE
   ${NR_SDAP_SRC}
   ${NR_UE_RRC_DIR}/L2_interface_ue.c
   ${NR_UE_RRC_DIR}/main_ue.c
-  ${NR_RRC_DIR}/nr_rrc_config.c
   ${NR_UE_RRC_DIR}/rrc_UE.c
   ${NR_UE_RRC_DIR}/rrc_nsa.c
   ${NR_UE_RRC_DIR}/rrc_timers_and_constants.c
@@ -1335,10 +1334,9 @@ if(E2_AGENT)
 endif()
 
 add_library(L2_LTE_NR
-  ${L2_RRC_SRC}
-  ${MAC_SRC}
+  # temporary solution until 4G/5G code completely untangled (as evidenced by deletion of the following file)
+  ${MAC_DIR}/dummy_functions.c
   ${ENB_APP_SRC}
-  ${MCE_APP_SRC}
 )
 
 target_link_libraries(L2_LTE_NR PRIVATE f1ap s1ap nr_rrc)
@@ -1350,12 +1348,6 @@ add_library(L2_UE
 target_link_libraries(L2_UE PRIVATE asn1_nr_rrc_hdrs asn1_lte_rrc_hdrs)
 target_link_libraries(L2_UE PRIVATE GTPV1U)
 
-add_library(L2_UE_LTE_NR
-  ${L2_RRC_SRC_UE}
-  ${MAC_SRC_UE}
-)
-target_link_libraries(L2_UE_LTE_NR PRIVATE asn1_nr_rrc_hdrs asn1_lte_rrc_hdrs)
-
 target_link_libraries(L2_UE PRIVATE asn1_lte_rrc_hdrs)
 
 add_library( NR_L2_UE ${NR_L2_SRC_UE} ${MAC_NR_SRC_UE} )
@@ -1893,12 +1885,13 @@ add_executable(nr-uesoftmodem
   ${OPENAIR2_DIR}/LAYER2/NR_MAC_COMMON/nr_mac_common.c
   ${OPENAIR2_DIR}/LAYER2/NR_MAC_COMMON/nr_mac_common_tdd.c
   ${OPENAIR1_DIR}/PHY/TOOLS/phy_scope_interface.c
+  ${PHY_INTERFACE_DIR}/queue_t.c
   )
 
 target_link_libraries(nr-uesoftmodem PRIVATE
   -Wl,--start-group
   nr_rrc SECURITY UTIL HASHTABLE SCHED_RU_LIB SCHED_NR_UE_LIB
-  PHY_COMMON PHY_NR_COMMON PHY_NR_UE NR_L2_UE L2_UE_LTE_NR MAC_NR_COMMON NFAPI_LIB NFAPI_PNF_LIB
+  PHY_COMMON PHY_NR_COMMON PHY_NR_UE NR_L2_UE MAC_NR_COMMON NFAPI_LIB NFAPI_PNF_LIB
   NFAPI_USER_LIB MISC_NFAPI_NR_LIB
   ITTI SIMU shlib_loader
   -Wl,--end-group z dl)
@@ -2106,7 +2099,7 @@ if (${T_TRACER})
         NFAPI_LIB NFAPI_PNF_LIB NFAPI_VNF_LIB NFAPI_USER_LIB
         MISC_NFAPI_LTE_LIB MISC_NFAPI_NR_LIB
         PHY_COMMON PHY PHY_UE PHY_NR PHY_NR_COMMON PHY_NR_UE PHY_RU
-        L2 L2_LTE L2_NR L2_LTE_NR L2_UE NR_L2_UE L2_UE_LTE_NR MAC_NR_COMMON MAC_UE_NR ngap
+        L2 L2_LTE L2_NR L2_LTE_NR L2_UE NR_L2_UE MAC_NR_COMMON MAC_UE_NR ngap
         CN_UTILS GTPV1U SCTP_CLIENT MME_APP LIB_NAS_UE NB_IoT SIMU OPENAIR0_LIB
         dfts config_internals nr_common crc_byte)
     if (TARGET ${i})
diff --git a/openair2/LAYER2/MAC/dummy_functions.c b/openair2/LAYER2/MAC/dummy_functions.c
new file mode 100644
index 0000000000..adc73d0dfa
--- /dev/null
+++ b/openair2/LAYER2/MAC/dummy_functions.c
@@ -0,0 +1,61 @@
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+#include "openair2/LAYER2/MAC/mac_proto.h"
+
+// TODO temporary solution
+//      to be removed once separation between NR and LTE is achieved
+
+int sf_ahead = 4;
+SCHEDULER_MODES global_scheduler_mode;
+
+int rrc_mac_config_req_eNB(const module_id_t Mod_idP, const rrc_mac_config_req_eNB_t *param)
+{
+  return 0;
+}
+
+void mac_top_init_eNB(void)
+{
+}
+
+uint32_t to_earfcn_UL(int eutra_bandP, long long int ul_CarrierFreq, uint32_t bw)
+{
+  return 0;
+}
+
+int32_t get_uldl_offset(int nr_bandP) {
+  return 0;
+}
+
+IF_Module_t *IF_Module_init(int Mod_id)
+{
+  return NULL;
+}
+
+uint32_t from_earfcn(int eutra_bandP, uint32_t dl_earfcn)
+{
+  return 0;
+}
+
+uint32_t to_earfcn_DL(int eutra_bandP, long long int dl_CarrierFreq, uint32_t bw)
+{
+  return 0;
+}