Freescale cup : Error message An_error_o​ccurred_du​ring_the_c​all_to_mak​e

I get the following error when I build my simulink model. Why do I get this error?

### Invoking Target Language Compiler on TFC.rtw ### Using System Target File: D:\softwares\windows softwares\matlab2014\rtw\c\ert\ert.tlc ### Loading TLC function libraries ### Initial pass through model to cache user defined code ### Caching model source code ### Writing source file TFC.c ### Writing header file TFC_private.h ### Writing header file TFC.h ### Writing header file TFC_types.h ### Writing header file rtwtypes.h ### Writing source file TFC_data.c ### Writing header file rtmodel.h ### Writing source file ert_main.c ### TLC code generation complete. .### Evaluating PostCodeGenCommand specified in the model ### Using toolchain: GNU Tools for ARM Embedded Processors v4.7 | gmake (64-bit Windows) ### 'C:\Users\Naveen Varma\Documents\MATLAB\TFC_ert_rtw\TFC.mk' is up to date ### Building 'TFC': D:\SOFTWA~1\WINDOW~1\MATLAB~1\bin\win64\gmake -f TFC.mk all C:\Users\Naveen Varma\Documents\MATLAB\TFC_ert_rtw>cd .

C:\Users\Naveen Varma\Documents\MATLAB\TFC_ert_rtw>if "" == "" (D:\SOFTWA~1\WINDOW~1\MATLAB~1\bin\win64\gmake -f TFC.mk all ) else (D:\SOFTWA~1\WINDOW~1\MATLAB~1\bin\win64\gmake -f TFC.mk ) arm-none-eabi-gcc -std=c99 -MD -ffunction-sections -fdata-sections -Wall -c -O0 -mcpu=cortex-m0plus -mthumb -fno-exceptions -fno-common -fmessage-length=0 -DMODEL=TFC -DNUMST=2 -DNCSTATES=0 -DHAVESTDIO -DONESTEPFCN=1 -DTERMFCN=1 -DMAT_FILE=0 -DMULTI_INSTANCE_CODE=0 -DINTEGER_CODE=0 -DMT=1 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DTID01EQ=0 -DNULL=0 -DEXIT_FAILURE=1 -DEXTMODE_DISABLEPRINTF -DEXTMODE_DISABLETESTING -DEXTMODE_DISABLE_ARGS_PROCESSING=1 -DTARGET_KL25Z -DTARGET_M0P -DTARGET_Freescale -DTOOLCHAIN_GCC_ARM -DTOOLCHAIN_GCC -D__CORTEX_M0PLUS -DARM_MATH_CM0PLUS -DRT -DSTACK_SIZE=64 -DONESTEPFCN=1 -DTERMFCN=1 -DMAT_FILE=0 -DMULTI_INSTANCE_CODE=0 -DINTEGER_CODE=0 -DMT=1 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DTID01EQ=0 -DMODEL=TFC -DNUMST=2 -DNCSTATES=0 -DHAVESTDIO -IC:/Users/NAVEEN~1/DOCUME~1/MATLAB/TFC_ert_rtw -IC:/Users/NAVEEN~1/DOCUME~1/MATLAB -IC:/Users/NAVEEN~1/Desktop -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/extern/include -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/simulink/include -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/rtw/c/src -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/rtw/c/src/ext_mode/common -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/rtw/c/ert -IC:/MATLAB/SupportPackages/mbed-8e73be2a2ac1 -IC:/MATLAB/SupportPackages/mbed-8e73be2a2ac1/TARGET_KL25Z -IC:/MATLAB/SupportPackages/freedomboard/include -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/rtw/c/src/ext_mode/serial -o "TFC.o" "TFC.c" arm-none-eabi-gcc -std=c99 -MD -ffunction-sections -fdata-sections -Wall -c -O0 -mcpu=cortex-m0plus -mthumb -fno-exceptions -fno-common -fmessage-length=0 -DMODEL=TFC -DNUMST=2 -DNCSTATES=0 -DHAVESTDIO -DONESTEPFCN=1 -DTERMFCN=1 -DMAT_FILE=0 -DMULTI_INSTANCE_CODE=0 -DINTEGER_CODE=0 -DMT=1 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DTID01EQ=0 -DNULL=0 -DEXIT_FAILURE=1 -DEXTMODE_DISABLEPRINTF -DEXTMODE_DISABLETESTING -DEXTMODE_DISABLE_ARGS_PROCESSING=1 -DTARGET_KL25Z -DTARGET_M0P -DTARGET_Freescale -DTOOLCHAIN_GCC_ARM -DTOOLCHAIN_GCC -D__CORTEX_M0PLUS -DARM_MATH_CM0PLUS -DRT -DSTACK_SIZE=64 -DONESTEPFCN=1 -DTERMFCN=1 -DMAT_FILE=0 -DMULTI_INSTANCE_CODE=0 -DINTEGER_CODE=0 -DMT=1 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DTID01EQ=0 -DMODEL=TFC -DNUMST=2 -DNCSTATES=0 -DHAVESTDIO -IC:/Users/NAVEEN~1/DOCUME~1/MATLAB/TFC_ert_rtw -IC:/Users/NAVEEN~1/DOCUME~1/MATLAB -IC:/Users/NAVEEN~1/Desktop -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/extern/include -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/simulink/include -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/rtw/c/src -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/rtw/c/src/ext_mode/common -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/rtw/c/ert -IC:/MATLAB/SupportPackages/mbed-8e73be2a2ac1 -IC:/MATLAB/SupportPackages/mbed-8e73be2a2ac1/TARGET_KL25Z -IC:/MATLAB/SupportPackages/freedomboard/include -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/rtw/c/src/ext_mode/serial -o "TFC_data.o" "TFC_data.c" arm-none-eabi-gcc -std=c99 -MD -ffunction-sections -fdata-sections -Wall -c -O0 -mcpu=cortex-m0plus -mthumb -fno-exceptions -fno-common -fmessage-length=0 -DMODEL=TFC -DNUMST=2 -DNCSTATES=0 -DHAVESTDIO -DONESTEPFCN=1 -DTERMFCN=1 -DMAT_FILE=0 -DMULTI_INSTANCE_CODE=0 -DINTEGER_CODE=0 -DMT=1 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DTID01EQ=0 -DNULL=0 -DEXIT_FAILURE=1 -DEXTMODE_DISABLEPRINTF -DEXTMODE_DISABLETESTING -DEXTMODE_DISABLE_ARGS_PROCESSING=1 -DTARGET_KL25Z -DTARGET_M0P -DTARGET_Freescale -DTOOLCHAIN_GCC_ARM -DTOOLCHAIN_GCC -D__CORTEX_M0PLUS -DARM_MATH_CM0PLUS -DRT -DSTACK_SIZE=64 -DONESTEPFCN=1 -DTERMFCN=1 -DMAT_FILE=0 -DMULTI_INSTANCE_CODE=0 -DINTEGER_CODE=0 -DMT=1 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DTID01EQ=0 -DMODEL=TFC -DNUMST=2 -DNCSTATES=0 -DHAVESTDIO -IC:/Users/NAVEEN~1/DOCUME~1/MATLAB/TFC_ert_rtw -IC:/Users/NAVEEN~1/DOCUME~1/MATLAB -IC:/Users/NAVEEN~1/Desktop -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/extern/include -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/simulink/include -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/rtw/c/src -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/rtw/c/src/ext_mode/common -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/rtw/c/ert -IC:/MATLAB/SupportPackages/mbed-8e73be2a2ac1 -IC:/MATLAB/SupportPackages/mbed-8e73be2a2ac1/TARGET_KL25Z -IC:/MATLAB/SupportPackages/freedomboard/include -ID:/SOFTWA~1/WINDOW~1/MATLAB~1/rtw/c/src/ext_mode/serial -o "ert_main.o" "ert_main.c" "### Creating standalone executable "../TFC.elf" ..." arm-none-eabi-g++ -Wl,--gc-sections -Wl,-Map="TFC.map" -mcpu=cortex-m0plus -mthumb --specs=nano.specs -T"C:\MATLAB\SupportPackages\mbed-8e73be2a2ac1/TARGET_KL25Z/TOOLCHAIN_GCC_ARM/MKL25Z4.ld" "C:\MATLAB\SupportPackages\mbed-8e73be2a2ac1/TARGET_KL25Z/TOOLCHAIN_GCC_ARM/cmsis_nvic.o" "C:\MATLAB\SupportPackages\mbed-8e73be2a2ac1/TARGET_KL25Z/TOOLCHAIN_GCC_ARM/system_MKL25Z4.o" "C:\MATLAB\SupportPackages\mbed-8e73be2a2ac1/TARGET_KL25Z/TOOLCHAIN_GCC_ARM/startup_MKL25Z4.o" "C:\MATLAB\SupportPackages\mbed-8e73be2a2ac1/TARGET_KL25Z/TOOLCHAIN_GCC_ARM/retarget.o" -lstdc++ -lsupc++ -lnosys -lc -lgcc -o ../TFC.elf battLed_wrapper.o battRead_wrapper.o MW_DC_Motor.o dcMotor_wrapper.o momSwitch_wrapper.o MW_Camera.o camera_wrapper.o MW_Servo.o servo_wrapper.o TFC.o TFC_data.o serial_wrapper.o io_wrapper.o syscalls.o BoardInit.o SysTickScheduler.o ert_main.o rt_main.o C:/MATLAB/SupportPackages/mbed-8e73be2a2ac1/TARGET_KL25Z/TOOLCHAIN_GCC_ARM/libmbed.a -lm -lm rt_main.o: In function `main': rt_main.c:(.text.main+0x0): multiple definition of `main' ert_main.o:ert_main.c:(.text.main+0x0): first defined here collect2.exe: error: ld returned 1 exit status gmake: * [../TFC.elf] Error 1

C:\Users\Naveen Varma\Documents\MATLAB\TFC_ert_rtw>echo The make command returned an error of 2 The make command returned an error of 2

C:\Users\Naveen Varma\Documents\MATLAB\TFC_ert_rtw>An_error_occurred_during_the_call_to_make 'An_error_occurred_during_the_call_to_make' is not recognized as an internal or external command, operable program or batch file.

Answer 1

[MathWorks Student Competitions Team]

It is difficult to tell what might be causing this issue from the posted output. The states error is:

multiple definition of `main'

which means that, for some reason there are two functions, either included in pre-written/compiled code or in code generated by simulink for your model, which are both named " main ".

It looks like there is a function, called " collect2 " that defines a function called " main ". It looks like Collect2 is a function used by GCC , the compiler that Simulink uses for the Freescale FRDM-KL25Z, in certain circumstances. If you are trying to add custom C/C++ code into a Simulink model you can find more information about integrating existing C/C++ code into a new Simulink Block in the Video:

Creating a Simulink Block Using MATLAB Code

If you were not intending to add any custom C/C++ code into your Simulink Model, then can you provide the following information:

• What version of MATLAB are you using (R2014a, R2014b, R2015a)?
• Are you on 32 or 64 bit Windows?
• What blocks are contained in your model (you can attach your model to this question if you want)?
• Are you having any issues compiling example models for the FRDM-KL25Z?
• Are you using the license provided for the Freescale Cup Competition ?

[M Naveen Varma]

Hi Thanks for all the help. I made a new model using same old blocks and everything worked perfectly.

[mokhsein abdullah]

Hi , how do you fix this problem ? Is it related to installation problem or something else ?