I have a lot of projects with stm32f1xx CPUs (cortex-m3), all is good with them. Now I decided to make project with stm32f051 (cortex-mo), and linker works with errors. I have several cpp files (task is to light-up LED), they are compiled with no errors when any of cortex-m3 or cortex-m0 is set as mcpu. But linker works ok with mcpu=cortex-m3 option, and with errors with mcpu=cortex-m0. But still linker says that job is done. I use Yagarto with GCC v.4.7.2. Here is output: arm-none-eabi-g++ -T"D:\Nute\_tmp_\f0test\STM32F051R8.ld" -Xlinker --gc-sections -Wl,-Map,f0test.map -mcpu=cortex-m0 -mthumb -o "f0test.elf" ./src/main.o ./lib/src/stm32f0xx_rcc.o ./lib/startup_stm32f0xx.o ./lib/system_stm32f0xx.o ./kl_lib/kl_lib_f0.o c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ bin/ld.exe: error: c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ lib/crt0.o: Conflicting CPU architectures 11/1 c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ bin/ld.exe: error: ./lib/src/stm32f0xx_rcc.o: Unknown CPU architecture c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ bin/ld.exe: error: ./lib/system_stm32f0xx.o: Unknown CPU architecture c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ bin/ld.exe: error: c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/thumb/v6m\libgcc.a(_udivsi 3.o): Unknown CPU architecture c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ bin/ld.exe: error: c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ lib/thumb/v6m\libc.a(lib_a-atexit.o): Unknown CPU architecture c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ bin/ld.exe: error: c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ lib/thumb/v6m\libc.a(lib_a-fini.o): Unknown CPU architecture c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ bin/ld.exe: error: c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ lib/thumb/v6m\libc.a(lib_a-init.o): Unknown CPU architecture Finished building target: f0test.elf c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ bin/ld.exe: error: c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ lib/thumb/v6m\libc.a(lib_a-__atexit.o): Unknown CPU architecture c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/../../../../arm-none-eabi/ bin/ld.exe: error: c:/yagarto/bin/../lib/gcc/arm-none-eabi/4.7.2/thumb/v6m/crtend.o: Unknown CPU architecture Invoking: ARM Yagarto Windows GNU Create Flash Image arm-none-eabi-objcopy -O ihex f0test.elf "f0test.hex" Finished building: f0test.hex When I use option -nostartfiles, obviously I have an error that _init() is not found. What is wrong with cortex-m0? Cortex-m3 is ok with same options. Thanks in advance!
Hmm, and what can I do with these letters 3 years old? Was those patch not included in GCC v.4.7.2?
You may try to replace -mcpu=cortex-m0 with -march=armv6-m and rebuild. Maybe it's just a small issue with the multilib-setting/cores-defintions in Yagarto but MiFi can tell more about the configuration. The prebuild toolchains from https://launchpad.net/gcc-arm-embedded, http://sourceforge.net/projects/devkitpro/files/devkitARM/ or http://www.mentor.com/embedded-software/sourcery-tools/sourcery-codebench/editions/lite-edition/ may also be worth a try. All of them are arm-none-eabi toolchains created from gcc/binutils/newlib sources very similar to Yagarto.
Thank you, Martin, I will try tools you mentioned. Actually, I solved the issue by adding -nostartfiles to linker options and implementing empty _init() function.
I am trying to build arm compiler tool chain for cortex a9 processor for freescale on redhat platform.. can any one suggest me the compatible versions of gcc lib, gcc, gnuutil along with kernel header files..
prasad wrote: > I am trying to build arm compiler tool chain for cortex a9 processor for > freescale on redhat platform.. can any one suggest me the compatible > versions of gcc lib, gcc, gnuutil along with kernel header files.. Please open another thread if your question is not related to the original post. Anyway: the question implies that you are looking for an arm-linux cross-compiler. Information, Code and Binaries available from http://www.linaro.org/ should be a good starting-point.
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