Difference between arm-ostl-linux-gnueabi-gcc and arm-none-linux-gnueabi-gcc

[diverger]

The gcc variant in STM32MPU Embedded Software distribution components is 'arm-ostl-linux-gnueabi-gcc'. Then what's the difference between 'arm-ostl-linux-gnueabi-gcc' and 'arm-none-linux-gnueabi-gcc'?

Thanks.

[OlivierK]

Hi diverger (Community Member) 

The gcc toolchain follows the arch-vendor-os-libc/abi syntax

"ost" stands for OpenSTLinux, it is the ARM cross compiler toolchain vendor name to be used in our OpenSTLinux SDK and optimized for our products. As opposed to the "none" which is the generic cross compiler toolchain provided by ARM.

https://wiki.st.com/stm32mpu/wiki/Menuconfig_or_how_to_configure_kernel#Menuconfig_and_Developer_Package

https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm/downloads

Rgds,

Olivier

[diverger]

So, the 'ost' version is the recommended compiler used in development with STM32MP, right?​

[OlivierK]

That is correct, arm-ostl-linux-gnueabi-gcc is the compiler to use for STM32MP for cross compilation: to recompile TF-A/U-boot and Linux kernel

Regards,

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