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SW4STM32 and SW4Linux fully supports the STM32MP1 asymmetric multicore Cortex/A7+M4 MPUs

   With System Workbench for Linux, Embedded Linux on the STM32MP1 family of MPUs from ST was never as simple to build and maintain, even for newcomers in the Linux world. And, if you install System Workbench for Linux in System Workbench for STM32 you can seamlessly develop and debug asymmetric applications running partly on Linux, partly on the Cortex-M4.
You can get more information from the ac6-tools website and download (registration required) various documents highlighting:

System Workbench for STM32

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collect2.exe: error: ld returned 1 exit status

Posted by BloodyVlad on 2018-07-06 01:48

I met this issue building SMARTMIC project for Bluecoin in Eclipse Oxygen with SW4STM32 plugin. I was able to build this project in the same configuration and environment, but after a few days this issue appeared. Installed Eclipse Photon and SW4STM32 plugin, issue disappeared, but after a few days reappeared again. There is the same issue with other of the shelf ST projects as well (eg STSW-SPIN3201). Could anyone help please?
Also, there is a warning:

  1. warning “Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)”


This wasn’t there before. It is strange, because the target MCU has FPU.

There is a build log.

        • Build of configuration Debug for project STM32F446ME-BlueCoin ****

make all
Building file: D:/workspace/STM32CubeFunctionPack_SMARTMIC1_V1.1.1/Middlewares/ST/STM32_AcousticDB_Library/Lib/Acoustic_DB100.c
Invoking: MCU GCC Compiler
D:\workspace\STM32CubeFunctionPack_SMARTMIC1_V1.1.1\Projects\Multi\Applications\FP-AUD-SMARTMIC1\SW4STM32\STM32F446ME-BlueCoin\Debug
arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -DARM_MATH_CM4 -DUSE_HAL_DRIVER -DSTM32_BLUECOIN -DSTM32F446xx -DUSE_COMPOSITE_VCP_AUDIO

...

Building target: STM32F4xx-Nucleo.elf
Invoking: MCU GCC Linker
arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -L”D:\workspace\STM32CubeFunctionPack_SMARTMIC1_V1.1.1\Middlewares\ST\STM32_Audio\Addons\PDM\Lib” -L”D:\workspace\STM32CubeFunctionPack_SMARTMIC1_V1.1.1\Middlewares\ST\STM32_AcousticBF_Library\Lib” -L”D:\workspace\STM32CubeFunctionPack_SMARTMIC1_V1.1.1\Middlewares\ST\STM32_AcousticEC_Library\Lib” -L”D:\workspace\STM32CubeFunctionPack_SMARTMIC1_V1.1.1\Middlewares\ST\STM32_AcousticSL_Library\Lib” -specs=nosys.specs -specs=nano.specs -T”..\STM32F446RETx_FLASH.ld” -Wl,-Map=output.map -Wl,--gc-sections -o “STM32F4xx-Nucleo.elf” @”objects.list” -l:libPDMFilter_CM4_GCC.a -l:libAcoustic_BF_CM4F_GCC_ot.a -l:libAcoustic_EC_CM4F_GCC_ot.a -l:libAcoustic_SL_CM4F_GCC_ot.a -lm
c:/programs/photon/plugins/fr.ac6.mcu.externaltools.arm-none.win32_1.15.0.201708311556/tools/compiler/bin/../lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/bin/ld.exe: cannot find crti.o: No such file or directory
c:/programs/photon/plugins/fr.ac6.mcu.externaltools.arm-none.win32_1.15.0.201708311556/tools/compiler/bin/../lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/bin/ld.exe: cannot find crtbegin.o: No such file or directory
c:/programs/photon/plugins/fr.ac6.mcu.externaltools.arm-none.win32_1.15.0.201708311556/tools/compiler/bin/../lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/bin/ld.exe: cannot find crt0.o: No such file or directory
collect2.exe: error: ld returned 1 exit status
makefile:44: recipe for target ‘STM32F4xx-Nucleo.elf’ failed
make: *** STM32F4xx-Nucleo.elf Error 1

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Posted by BloodyVlad on 2018-07-08 08:26
Didn’t find an actual cause. Uninstalled SW4STM32 in Eclipse plugins installer and removed all fr.ac6* folders and files + artifacts.xml in Eclipse folder . Then installed again and problem gone.
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Posted by robermcintosh on 2019-10-10 18:15
Anyone who’s looking for this error might want to know that Windows can remove these .o files during updates. Reinstall might be the only recourse.
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