# PlatformIO building errors when compiling port.c **URL:** \ **Category:** Kernel\ **Created:** [September 13, 2021, 6:21pm UTC](https://forums.freertos.org/t/platformio-building-errors-when-compiling-port-c/13448 "2021-09-13T18:21:57Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![EduardoGoncalves1966](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/eduardogoncalves1966/32/1686_2.png) [@EduardoGoncalves1966](https://forums.freertos.org/u/EduardoGoncalves1966)\ **Post date:** [September 13, 2021, 6:21pm UTC](https://forums.freertos.org/t/platformio-building-errors-when-compiling-port-c/13448/1 "2021-09-13T18:21:57Z")
Hi I’m trying to use PlatformIO with a STM32F723ZG and FreeRTOS. When compiling port.c I get these errors: /tmp/ccN7NtDU.s:330: Error: selected processor does not support `vstmdbeq r0!,{s16-s31}' in Thumb mode /tmp/ccN7NtDU.s:332: Error: instruction not allowed in IT block -- `stmdb r0!,{r4-r11,r14}’ /tmp/ccN7NtDU.s:352: Error: selected processor does not support `vldmiaeq r0!,{s16-s31}' in Thumb mode /tmp/ccN7NtDU.s:354: Error: instruction not allowed in IT block -- `msr psp,r0’ \*\*\* [.pio/build/env\_nucleo\_h723zg/src/Middlewares/Third\_Party/FreeRTOS/Source/portable/GCC/ARM\_CM4F/port.o] Error 1 It seems that the MCU is not properly defined… However I’m using -DSTM32H723xx in the build\_flags of PlatformIO.ini. Any help? thanks ======================= This my PlatformIO.ini file. [platformio] default\_envs = env\_nucleo\_h723zg [env] check\_tool = cppcheck check\_flags = cppcheck: --std=c11 --inline-suppr --inconclusive -j4 --addon=…/…/scripts/misra/misra.json [env:env\_nucleo\_h723zg] platform = ststm32 board = nucleo\_h723zg framework = stm32cube src\_filter = +\<\*\> -\<.git/\> - - build\_flags = -DEVAL -DSTM32H723xx -I include -I src -I src/Core/Inc -I src/Drivers/CMSIS/Include/ -I src/Drivers/CMSIS/Device/ST/STM32H7xx/Include/ -I src/Drivers/STM32H7xx\_HAL\_Driver/Inc/ -I src/Middlewares/Third\_Party/FreeRTOS/Source/include/ -I src/Middlewares/Third\_Party/FreeRTOS/Source/portable/GCC/ARM\_CM4F/ -I src/Middlewares/Third\_Party/FreeRTOS/Source/portable/GCC/ARM\_CM4F/r0p1/ -I src/Middlewares/Third\_Party/FreeRTOS/Source/CMSIS\_RTOS\_V2/ -Wl,–whole-archive -Wl,–allow-multiple-definition upload\_protocol = stlink debug\_tool = stlink debug\_init\_break = tbreak main ---
**Author:** ![aggarg](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/aggarg/32/4245_2.png) [@aggarg](https://forums.freertos.org/u/aggarg)\ **Post date:** [September 13, 2021, 6:52pm UTC](https://forums.freertos.org/t/platformio-building-errors-when-compiling-port-c/13448/2 "2021-09-13T18:52:39Z")
Which compiler are you using? It should be present in your full logs. ---
**Author:** ![EduardoGoncalves1966](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/eduardogoncalves1966/32/1686_2.png) [@EduardoGoncalves1966](https://forums.freertos.org/u/EduardoGoncalves1966)\ **Post date:** [September 13, 2021, 7:42pm UTC](https://forums.freertos.org/t/platformio-building-errors-when-compiling-port-c/13448/3 "2021-09-13T19:42:16Z")
It should be GCC for ARM. At least I see - toolchain-gccarmnoneeabi 1.70201.0 (7.2.1) ---
**Author:** ![aggarg](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/aggarg/32/4245_2.png) [@aggarg](https://forums.freertos.org/u/aggarg)\ **Post date:** [September 13, 2021, 8:25pm UTC](https://forums.freertos.org/t/platformio-building-errors-when-compiling-port-c/13448/4 "2021-09-13T20:25:30Z")
Then probably you are not passing flags to enable FPU. As mentioned in [this post](https://forums.freertos.org/t/stm32f4-gcc-compilation-problems/3457), you probably need to pass these flags - `-mfpu=fpv4-sp-d16", "-mfloat-abi=hard`. Thanks. ---
**Author:** ![rtel](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/rtel/32/31_2.png) [@rtel](https://forums.freertos.org/u/rtel)\ **Post date:** [September 13, 2021, 8:25pm UTC](https://forums.freertos.org/t/platformio-building-errors-when-compiling-port-c/13448/5 "2021-09-13T20:25:56Z")
Looks like you are trying to build floating point instructions but telling the compiler there is no floating point unit. Check your GCC command line matches the part you are targetting. ---
**Author:** ![EduardoGoncalves1966](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/eduardogoncalves1966/32/1686_2.png) [@EduardoGoncalves1966](https://forums.freertos.org/u/EduardoGoncalves1966)\ **Post date:** [September 13, 2021, 8:48pm UTC](https://forums.freertos.org/t/platformio-building-errors-when-compiling-port-c/13448/6 "2021-09-13T20:48:15Z")
thanks. But still I have this: /home/wsone/.platformio/packages/toolchain-gccarmnoneeabi/bin/…/lib/gcc/arm-none-eabi/7.2.1/…/…/…/…/arm-none-eabi/bin/ld: error: .pio/build/env\_nucleo\_h723zg/FrameworkHALDriver/Src/stm32h7xx\_hal.o uses VFP register arguments, .pio/build/env\_nucleo\_h723zg/firmware.elf does not Are the “VFP register arguments” still related with the Floating Point? I’m trying to get rid of FrameworkHALDriver and use the HAL drivers provided by STM32CudeIDE but so far no success… ---
**Author:** ![EduardoGoncalves1966](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/eduardogoncalves1966/32/1686_2.png) [@EduardoGoncalves1966](https://forums.freertos.org/u/EduardoGoncalves1966)\ **Post date:** [September 13, 2021, 8:52pm UTC](https://forums.freertos.org/t/platformio-building-errors-when-compiling-port-c/13448/7 "2021-09-13T20:52:55Z")
Now I have changed from -mfloat-abi=hard to -mfloat-abi=softfp and now it compiles. But is this correct? thanks. Linking .pio/build/env\_nucleo\_h723zg/firmware.elf Checking size .pio/build/env\_nucleo\_h723zg/firmware.elf Advanced Memory Usage is available via “PlatformIO Home \> Project Inspect” RAM: [=] 5.0% (used 22320 bytes from 442368 bytes) Flash: [] 2.5% (used 25752 bytes from 1048576 bytes) Building .pio/build/env\_nucleo\_h723zg/firmware.bin [SUCCESS] Took 11.67 seconds ========================================================= ---
**Author:** ![aggarg](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/aggarg/32/4245_2.png) [@aggarg](https://forums.freertos.org/u/aggarg)\ **Post date:** [September 13, 2021, 8:57pm UTC](https://forums.freertos.org/t/platformio-building-errors-when-compiling-port-c/13448/8 "2021-09-13T20:57:56Z")
I typed incorrectly - softfp is good. ---
**Author:** ![EduardoGoncalves1966](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/eduardogoncalves1966/32/1686_2.png) [@EduardoGoncalves1966](https://forums.freertos.org/u/EduardoGoncalves1966)\ **Post date:** [September 13, 2021, 9:14pm UTC](https://forums.freertos.org/t/platformio-building-errors-when-compiling-port-c/13448/9 "2021-09-13T21:14:58Z")
thanks Another bug bites the dust… 🙂