Build Error: "_close is not implemented and will always fail"

[B.Kaya]

Hello,

I am developing bootloader application inside of FSBL project. When I build the project, I am getting error. You can see error below.

I did some search about "DSO" but I did not find exactly what cause this error or how should I fix this? Because my application and extmemloader has same configuration and I can build them.

(I changed GNU tool version for FSBL but it also did not work.) 

Thanks for help,

Best Regards.

make -j20 all 
arm-none-eabi-gcc "../Usr/lib_bootloader/Bootloader.c" -mcpu=cortex-m55 -std=gnu11 -g3 -DDEBUG -DUSE_HAL_DRIVER -DSTM32N655xx -DTX_INCLUDE_USER_DEFINE_FILE -DTX_SINGLE_MODE_SECURE=1 -DUX_INCLUDE_USER_DEFINE_FILE -c -I../../../FSBL/Core/Inc -I../../../Drivers/STM32N6xx_HAL_Driver/Inc -I../../../Drivers/CMSIS/Device/ST/STM32N6xx/Include -I../../../Drivers/STM32N6xx_HAL_Driver/Inc/Legacy -I../../../Middlewares/ST/STM32_ExtMem_Manager -I../../../Middlewares/ST/STM32_ExtMem_Manager/boot -I../../../Middlewares/ST/STM32_ExtMem_Manager/sal -I../../../Middlewares/ST/STM32_ExtMem_Manager/nor_sfdp -I../../../Middlewares/ST/STM32_ExtMem_Manager/psram -I../../../Middlewares/ST/STM32_ExtMem_Manager/sdcard -I../../../Middlewares/ST/STM32_ExtMem_Manager/user -I../../../Middlewares/ST/threadx/common/inc -I../../../Middlewares/ST/threadx/ports/cortex_m55/gnu/inc -I../../../Drivers/CMSIS/Include -I../../../FSBL/AZURE_RTOS/App -I../../../FSBL/USBX/App -I../../../FSBL/USBX/Target -I../../../Middlewares/ST/usbx/common/core/inc -I../../../Middlewares/ST/usbx/ports/generic/inc -I../../../Middlewares/ST/usbx/common/usbx_stm32_device_controllers -I../../../Middlewares/ST/usbx/common/usbx_device_classes/inc -I../Usr/app_inc -I../Usr/lib_bootloader -I../../../Secure_nsclib -O0 -ffunction-sections -fdata-sections -Wall -fstack-usage -fcyclomatic-complexity -mcmse -MMD -MP -MF"Usr/lib_bootloader/Bootloader.d" -MT"Usr/lib_bootloader/Bootloader.o" --specs=nano.specs -mfpu=fpv5-d16 -mfloat-abi=hard -mthumb -o "Usr/lib_bootloader/Bootloader.o"
arm-none-eabi-gcc "../Usr/app_src/App_Com.c" -mcpu=cortex-m55 -std=gnu11 -g3 -DDEBUG -DUSE_HAL_DRIVER -DSTM32N655xx -DTX_INCLUDE_USER_DEFINE_FILE -DTX_SINGLE_MODE_SECURE=1 -DUX_INCLUDE_USER_DEFINE_FILE -c -I../../../FSBL/Core/Inc -I../../../Drivers/STM32N6xx_HAL_Driver/Inc -I../../../Drivers/CMSIS/Device/ST/STM32N6xx/Include -I../../../Drivers/STM32N6xx_HAL_Driver/Inc/Legacy -I../../../Middlewares/ST/STM32_ExtMem_Manager -I../../../Middlewares/ST/STM32_ExtMem_Manager/boot -I../../../Middlewares/ST/STM32_ExtMem_Manager/sal -I../../../Middlewares/ST/STM32_ExtMem_Manager/nor_sfdp -I../../../Middlewares/ST/STM32_ExtMem_Manager/psram -I../../../Middlewares/ST/STM32_ExtMem_Manager/sdcard -I../../../Middlewares/ST/STM32_ExtMem_Manager/user -I../../../Middlewares/ST/threadx/common/inc -I../../../Middlewares/ST/threadx/ports/cortex_m55/gnu/inc -I../../../Drivers/CMSIS/Include -I../../../FSBL/AZURE_RTOS/App -I../../../FSBL/USBX/App -I../../../FSBL/USBX/Target -I../../../Middlewares/ST/usbx/common/core/inc -I../../../Middlewares/ST/usbx/ports/generic/inc -I../../../Middlewares/ST/usbx/common/usbx_stm32_device_controllers -I../../../Middlewares/ST/usbx/common/usbx_device_classes/inc -I../Usr/app_inc -I../Usr/lib_bootloader -I../../../Secure_nsclib -O0 -ffunction-sections -fdata-sections -Wall -fstack-usage -fcyclomatic-complexity -mcmse -MMD -MP -MF"Usr/app_src/App_Com.d" -MT"Usr/app_src/App_Com.o" --specs=nano.specs -mfpu=fpv5-d16 -mfloat-abi=hard -mthumb -o "Usr/app_src/App_Com.o"
arm-none-eabi-g++ -o "SW_66XHXXSXXXX_N6_FSBL.elf" @"objects.list"   -mcpu=cortex-m55 -T"D:\workspace_N6\SW_66XHXXSXXXX_N6_1\STM32CubeIDE\FSBL\STM32N655L0HXQ_AXISRAM2_fsbl.ld" --specs=nosys.specs -Wl,-Map="SW_66XHXXSXXXX_N6_FSBL.map" -Wl,--gc-sections -static -Wl,--cmse-implib -Wl,--out-implib=./secure_nsclib.o --specs=nano.specs -mfpu=fpv5-d16 -mfloat-abi=hard -mthumb -Wl,--start-group -lc -lm -lstdc++ -lsupc++ -Wl,--end-group
C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/lib/thumb/v8-m.main+dp/hard\libc_nano.a(libc_a-closer.o): in function `_close_r':
(.text._close_r+0xc): warning: _close is not implemented and will always fail
C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/lib/thumb/v8-m.main+dp/hard\libc_nano.a(libc_a-closer.o): note: the message above does not take linker garbage collection into account
C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/lib/thumb/v8-m.main+dp/hard\libc_nano.a(libc_a-lseekr.o): in function `_lseek_r':
C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/lib/thumb/v8-m.main+dp/hard\libc_nano.a(libc_a-lseekr.o): note: the message above does not take linker garbage collection into account
(.text._lseek_r+0x10): warning: _lseek is not implemented and will always fail
C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/lib/thumb/v8-m.main+dp/hard\libc_nano.a(libc_a-readr.o): in function `_read_r':
(.text._read_r+0x10): warning: _read is not implemented and will always fail
C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/lib/thumb/v8-m.main+dp/hard\libc_nano.a(libc_a-readr.o): note: the message above does not take linker garbage collection into account
C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/lib/thumb/v8-m.main+dp/hard\libc_nano.a(libc_a-writer.o): in function `_write_r':
(.text._write_r+0x10): warning: _write is not implemented and will always fail
C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/lib/thumb/v8-m.main+dp/hard\libc_nano.a(libc_a-writer.o): note: the message above does not take linker garbage collection into account
C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: warning: cannot find entry symbol Reset_Handler; defaulting to 34180400
C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: ./secure_nsclib.o: no symbol found for import library
C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: ./secure_nsclib.o: failed to generate import library
C:/ST/STM32CubeIDE_1.14.1/STM32CubeIDE/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.13.3.rel1.win32_1.0.0.202411081344/tools/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld.exe: final link failed: no symbols
collect2.exe: error: ld returned 1 exit status
make: *** [makefile:90: SW_66XHXXSXXXX_N6_FSBL.elf] Error 1
"make -j20 all" terminated with exit code 2. Build might be incomplete.

[B.Kaya]

I fixed it. You can delete the post. Thank you

[Andrew Neil]

It would be more helpful if you described how you fixed it - for the benefit of people who may find this in a search, trying to solve the same problem...

Help others to solve their issues.

[B.Kaya · Accepted solution]

Problem was not about DOS! 
In the first place, I tought that there are some invisible variables inside of include files but I figured out that root folder is deleted from "Source Location". Therefore, FSBL project did not find the "Secure_nsclib" location.

Best Regards.