I have a Keil MDK project which outputs a library mc_comms.lib. I have another Keil project which uses this library and don't have any issues. My customer is using STM Cube and can't build the same test project with the same library.
c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: cannot find -lB:/STM32/G4/Examples/CubeIDE_1_6_0/zti_lib/zti_lib/lib/mc_comms.libFYI:
b:\STM32\G4\Examples\CubeIDE_1_6_0\zti_lib\zti_lib\lib>dir Volume in drive B is home Volume Serial Number is 4D4B-F115
Directory of b:\STM32\G4\Examples\CubeIDE_1_6_0\zti_lib\zti_lib\lib
03/18/2021 11:34 <DIR> .03/17/2021 20:14 <DIR> ..03/17/2021 18:16 2,139 mc_comms.h03/18/2021 11:33 32,674 mc_comms.lib 2 File(s) 34,813 bytes 2 Dir(s) 11,366,381,383,680 bytes free
b:\STM32\G4\Examples\CubeIDE_1_6_0\zti_lib\zti_lib\lib>
Even if I change to GNU toolchain I still have issues:
linking...c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: c:/st/stm32cubeide_1.6.0/stm32cubeide/plugins/com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924/tools/bin/../lib/gcc/arm-none-eabi/9.3.1/../../../../arm-none-eabi/lib/thumb/v7e-m+fp/hard\libc.a(lib_a-exit.o): in function `exit':exit.c:(.text.exit+0x16): undefined reference to `_exit'c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: ./out/startup_stm32g431xx.o:(.text+0x0): undefined reference to `_sidata'c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: ./out/startup_stm32g431xx.o:(.text+0x4): undefined reference to `_sdata'c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: ./out/startup_stm32g431xx.o:(.text+0xc): undefined reference to `_sbss'c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: ./out/startup_stm32g431xx.o:(.text+0x10): undefined reference to `_ebss'c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: ./out/startup_stm32g431xx.o: in function `LoopForever':B:/STM32/G4/Examples/mc_comm_lib GNU mk9p0/../../Nimbus/PAL/SRC/startup_stm32g431xx.asm:63: undefined reference to `_estack'c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: B:/STM32/G4/Examples/mc_comm_lib GNU mk9p0/../../Nimbus/PAL/SRC/startup_stm32g431xx.asm:67: undefined reference to `_sdata'c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: B:/STM32/G4/Examples/mc_comm_lib GNU mk9p0/../../Nimbus/PAL/SRC/startup_stm32g431xx.asm:69: undefined reference to `_sidata'c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: B:/STM32/G4/Examples/mc_comm_lib GNU mk9p0/../../Nimbus/PAL/SRC/startup_stm32g431xx.asm:87: undefined reference to `_siccmram'c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: B:/STM32/G4/Examples/mc_comm_lib GNU mk9p0/../../Nimbus/PAL/SRC/startup_stm32g431xx.asm:93: undefined reference to `_sccmram'c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: B:/STM32/G4/Examples/mc_comm_lib GNU mk9p0/../../Nimbus/PAL/SRC/startup_stm32g431xx.asm:94: undefined reference to `_eccmram'c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: B:/STM32/G4/Examples/mc_comm_lib GNU mk9p0/../../Nimbus/PAL/SRC/startup_stm32g431xx.asm:100: undefined reference to `_sbss'c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: B:/STM32/G4/Examples/mc_comm_lib GNU mk9p0/../../Nimbus/PAL/SRC/startup_stm32g431xx.asm:101: undefined reference to `_ebss'c:\st\stm32cubeide_1.6.0\stm32cubeide\plugins\com.st.stm32cube.ide.mcu.externaltools.gnu-tools-for-stm32.9-2020-q2-update.win32_1.5.0.202011040924\tools\arm-none-eabi\bin\ld.exe: ./out/startup_stm32g431xx.o:(.isr_vector+0x0): undefined reference to `_estack'collect2.exe: error: ld returned 1 exit status
Do you know what is my problem? How can I resolve it?
Thanks.
Is that is an absolute mast? 1. I prefer to use what I use - i.e armcc v.5.06 b7. For this particular case, I can try armcc v6. What if one has a required library but doesn't have its source?
As an alternative, as you can see I'm using GNU within Keil MDK but still have errors, which I can't resolve..What should I do within MDK to make it happy? I really don't spend any time with Cube.
For GCC compiler questions, this might not be the best forum to ask, since most users here are using the Arm Compiler 5 or Arm Compiler 6.
Looking around, it appears symbols like _sbss and _ebss are meant to be defined in a linker script file. See these articles in a series on linker files:
https://interrupt.memfault.com/blog/how-to-write-linker-scripts-for-firmware
https://interrupt.memfault.com/blog/zero-to-main-1
I suggest trying to build a project in Keil using 'gcc-arm-none-eabi-10-2020' , make sure that works, then try building this project.