--- a/arm-tidl/onnxrt_ep/src/concerto_common.mak	2022-12-20 00:04:22.000000000 +0000
+++ b/arm-tidl/onnxrt_ep/src/concerto_common.mak	2023-04-24 10:50:28.586491914 +0100
@@ -26,4 +26,5 @@
              -Wno-unused-but-set-variable \
              -Wno-unused-result \
              -Wno-format-overflow \
-             -Wno-format-truncation
+             -Wno-format-truncation \
+             -Werror=return-type
--- a/arm-tidl/rt/src/concerto_common.mak	2022-12-20 00:04:21.000000000 +0000
+++ b/arm-tidl/rt/src/concerto_common.mak	2023-04-24 10:50:16.170516566 +0100
@@ -1,6 +1,6 @@
 TARGET      := vx_tidl_rt
 TARGETTYPE  := dsmo
-CFLAGS += -fPIC -Wno-int-to-pointer-cast -Wno-stringop-truncation -Wno-format-overflow
+CFLAGS += -fPIC -Wno-int-to-pointer-cast -Wno-stringop-truncation -Wno-format-overflow -Werror=return-type
 CPPFLAGS += -fPIC --std=c++11
 
 CSOURCES    += ../tidl_rt_ovx.c
--- a/makerules/rules.mk	2022-12-20 00:04:21.000000000 +0000
+++ b/makerules/rules.mk	2023-04-24 13:04:16.778657781 +0100
@@ -224,13 +224,13 @@
   endif
 
   ifeq ($(TARGET_BUILD), debug)
-    COMPILER_FLAGS += -std=c++14  -DHOST_EMULATION -w -D_HOST_BUILD -DGCC_BUILD  
+    COMPILER_FLAGS += -std=c++14  -DHOST_EMULATION -D_HOST_BUILD -DGCC_BUILD -Werror=return-type
     GCC_DEBUG_CFLAGS :=-ggdb -ggdb3 -gdwarf-2
   else
     ifeq ($(DEVELOPER_BUILD), 0)
-      COMPILER_FLAGS += -std=c++14 -O3 -DHOST_EMULATION -D_HOST_BUILD -DGCC_BUILD 
+      COMPILER_FLAGS += -std=c++14 -O3 -DHOST_EMULATION -D_HOST_BUILD -DGCC_BUILD -Werror=return-type
     else
-      COMPILER_FLAGS += -std=c++14 -O3 -DHOST_EMULATION -D_HOST_BUILD -DGCC_BUILD -g
+      COMPILER_FLAGS += -std=c++14 -O3 -DHOST_EMULATION -D_HOST_BUILD -DGCC_BUILD -g -Werror=return-type
     endif
   endif
   LD=g++-5
Binary files a/ti_dl/test/j7-c71_0-fw and b/ti_dl/test/j7-c71_0-fw differ
--- a/ti_dl/utils/tidlModelGraphviz/tidl_graph_model_runtimes.cpp	2022-12-20 00:04:27.000000000 +0000
+++ b/ti_dl/utils/tidlModelGraphviz/tidl_graph_model_runtimes.cpp	2023-04-24 08:30:03.523153079 +0100
@@ -56,7 +56,7 @@
   "#EE82EE",    //"Scale"
 };
 
-void * TIDL_readAllowlistNodesFile(char * fname, std::vector<std::vector<int>>& supportedNodeGroups)
+void TIDL_readAllowlistNodesFile(char * fname, std::vector<std::vector<int>>& supportedNodeGroups)
 {
   std::ifstream fAllowlistNode(fname);
 
--- a/ti_dl/utils/tidlModelImport/makefile_bin	2022-12-20 00:04:27.000000000 +0000
+++ b/ti_dl/utils/tidlModelImport/makefile_bin	2023-04-24 12:30:43.494549119 +0100
@@ -98,7 +98,7 @@
 CFLAGS += /DTIDL_IMPORT_TOOL
 else
 CFLAGS += -D_GNU_SOURCE
-CFLAGS += -DTIDL_IMPORT_TOOL -w
+CFLAGS += -DTIDL_IMPORT_TOOL -Werror=return-type
 endif
 
 ##############################################################
--- a/ti_dl/utils/tidlModelImport/makefile_lib	2022-12-20 00:04:27.000000000 +0000
+++ b/ti_dl/utils/tidlModelImport/makefile_lib	2023-04-24 12:30:50.454535298 +0100
@@ -116,7 +116,7 @@
 ifdef SystemRoot
 CFLAGS+= /DTIDL_IMPORT_TOOL
 else
-CFLAGS+= -DTIDL_IMPORT_TOOL -w
+CFLAGS+= -DTIDL_IMPORT_TOOL -Werror=return-type
 endif
 
 ##############################################################
--- a/ti_dl/utils/tidlModelImport/makefile_shared	2022-12-20 00:04:27.000000000 +0000
+++ b/ti_dl/utils/tidlModelImport/makefile_shared	2023-04-24 13:40:36.814848128 +0100
@@ -181,7 +181,7 @@
 CFLAGS += /DDLL_EXPORT
 else
 CFLAGS += -D_GNU_SOURCE
-CFLAGS += -DTIDL_IMPORT_TOOL -w
+CFLAGS += -DTIDL_IMPORT_TOOL -Werror=return-type
 endif
 
 ifeq ($(MAKECMDGOALS),tvm_relay)
--- a/ti_dl/utils/tidlModelImport/tidl_import_common.cpp	2023-04-24 13:38:45.283719711 +0100
+++ b/ti_dl/utils/tidlModelImport/tidl_import_common.cpp	2023-04-24 12:10:00.353017409 +0100
@@ -922,6 +922,8 @@
   {
     fclose(fp1);
   }
+
+  return 0;
 }
 
 void TIDL_UpdateInDataBuffId(sTIDL_OrgNetwork_t * pOrgTIDLNetStructure,
@@ -1650,6 +1652,7 @@
 
   fwrite(&gIOParams, 1, sizeof(sTIDL_IOBufDesc_t), fp1);
   fclose(fp1);
+  return 0;
 }
 
 
--- a/ti_dl/utils/tidlModelImport/tidl_import_common_model_check.cpp	2022-12-20 00:04:27.000000000 +0000
+++ b/ti_dl/utils/tidlModelImport/tidl_import_common_model_check.cpp	2023-04-24 11:00:02.057353286 +0100
@@ -461,6 +461,8 @@
       return TIDL_ALLOWLISTING_LAYER_CHECK_FAILED;
     }
   }
+
+  return 0;
 }
 static void checkConvLayers(const sTIDL_LayerPC_t &layerPC, DiagList_t &diags)
 {
--- a/ti_dl/utils/tidlModelImport/tidl_import_core.cpp	2022-12-20 00:04:27.000000000 +0000
+++ b/ti_dl/utils/tidlModelImport/tidl_import_core.cpp	2023-04-24 12:09:15.497106472 +0100
@@ -558,7 +558,7 @@
   {
     printf("%s\n", sysCommand);
   }
-  system(sysCommand);
+  return system(sysCommand);
 }
 
 int tidlRunModelDumpTool(tidl_import_config * params)
@@ -586,7 +586,7 @@
   {
     printf("%s\n", sysCommand);
   }
-  system(sysCommand);
+  return system(sysCommand);
 }
 
 int tidlWriteTensorNamesToFile(tidl_import_config * params, const char* suffix)
@@ -623,6 +623,7 @@
   }
   free(tidlNet);
   fclose(layerInfoFile);
+  return 0;
 }
 
 /** This function removes the string "tidl_net_" and ".bin" from the net bin file names to reduce the folder name size for perfsim
@@ -1198,6 +1199,8 @@
   {
     pTIDLNetStructure->isQuantStatsAvailable = quantStatus;
   }
+
+  return 0;
 }
 
 void tidl_updateNetPitch(sTIDL_Network_t * tidlNet)
--- a/ti_dl/utils/tidlModelImport/tidl_import_quantize.cpp	2022-12-20 00:04:27.000000000 +0000
+++ b/ti_dl/utils/tidlModelImport/tidl_import_quantize.cpp	2023-04-24 12:14:34.552472971 +0100
@@ -2341,6 +2341,7 @@
     /* Run quant stats again to save the final min/max statistics after bias calibration */
 //    tidlRunQuantStatsTool((void**)&perChannelMeanPtrFloat);
 
+  return 0;
 }
 
 
--- a/ti_dl/utils/tidlModelImport/tidl_runtimes_import_common.cpp	2022-12-20 00:04:27.000000000 +0000
+++ b/ti_dl/utils/tidlModelImport/tidl_runtimes_import_common.cpp	2023-04-24 12:37:52.093698124 +0100
@@ -710,6 +710,8 @@
     printf("Please provide TIDL tools path \n");
     exit(-1);
   }
+
+  return 0;
 }
 
 /** Add output data layer to subgraph */
@@ -785,6 +787,8 @@
       gParams.rawDataInElementType[i] = TIDL_SignedWord;
     }
   }
+
+  return 0;
 }
 
 /** This function calls "TIDL_import_backend" to run calibration, quantization and save the final network files */
--- a/ti_dl/utils/tidlModelImport/tidl_tfImport.cpp	2022-12-20 00:04:27.000000000 +0000
+++ b/ti_dl/utils/tidlModelImport/tidl_tfImport.cpp	2023-04-24 12:10:32.700953181 +0100
@@ -1259,6 +1259,8 @@
       strcat(outList, ",");
    }
   }
+
+  return 0;
 }
 
 int32_t tidl_tfLayerFillTensorNames(sTIDL_OrgNetwork_t   *pOrgTIDLNetStructure,
--- a/ti_dl/utils/tidlModelImport/tidl_tfLiteImport.cpp	2022-12-20 00:04:27.000000000 +0000
+++ b/ti_dl/utils/tidlModelImport/tidl_tfLiteImport.cpp	2023-04-24 12:11:21.556856176 +0100
@@ -322,6 +322,7 @@
     printf("\nOnly float, DT_INT32 and DT_UNT8 tensor is suported \n");
     return -1;
   }
+  return 0;
 }
 
 bool isTensorVariable(const Model* tfliteModel,int32_t idx)
@@ -1333,6 +1334,7 @@
     return -1;
   }
 
+  return 0;
 }
 
 int32_t TIDL_tfliteMapReluParams(sTIDL_OrgNetwork_t   *pOrgTIDLNetStructure,
--- a/ti_dl/test/src/concerto_common.mak	2022-12-20 00:04:28.000000000 +0000
+++ b/ti_dl/test/src/concerto_common.mak	2023-04-25 12:41:17.620684302 +0100
@@ -51,6 +51,10 @@
     DEFS+=DMA_UTILS_STANDALONE
 endif
 
+ifeq ($(TARGET_PLATFORM),PC)
+    CFLAGS += -Werror=return-type
+endif
+
 #ifeq ($(TIDL_BUILD_FOR_QT), 1)
 DEFS+=TIDL_BUILD_FOR_QT
 #endif
--- a/ti_dl/test/src/tidl_rt.c	2022-12-20 00:04:28.000000000 +0000
+++ b/ti_dl/test/src/tidl_rt.c	2023-04-25 12:42:50.396648161 +0100
@@ -256,13 +256,14 @@
   return;
 }
 
-tidl_printDdrStats(uint64_t read_bytes, uint64_t write_bytes)
+int tidl_printDdrStats(uint64_t read_bytes, uint64_t write_bytes)
 {
 #if (!HOST_EMULATION)
   #if ENABLE_DDR_BW_STATS
       tidl_tb_printf(0, " DDR_READ_WRITE_TOTAL_MB = %8.2f, %8.2f, %8.2f ", (ddr_read / 1000000.0), (ddr_write / 1000000.0), ((ddr_read + ddr_write) / 1000000.0));
   #endif
 #endif
+  return 0;
 } 
 
 #if (!HOST_EMULATION)