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Some arm-none-eabi toolchains include picolibc instead of newlib, so if newlib fails, check to see if we can build with that instead.
Reduce syscalls.c to provide only _exit as required by picolibc. Signed-off-by: Keith Packard <keithp@keithp.com>
Test whether gcc --specs=picolibc.specs works, if so use that instead of newlib. Signed-off-by: Keith Packard <keithp@keithp.com>
We don't need any of these with picolibc. Signed-off-by: Keith Packard <keithp@keithp.com>
drashna
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Feb 14, 2026
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Any changes on chibiOS libraries need to go upstream. We don't accept any changes to our repos directly.
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@keith-packard had already raised a corresponding PR against our fork before I'd disabled PRs on the repo.
The usual upstreaming process for ChibiOS changes is to post on https://forum.chibios.org -- they still do everything manually through Subversion.
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Description
Check for picolibc support in the toolchain, if available use that.
Pull in a version of chibios with some small picolibc compatibility fixes.
Disable a range of syscall stubs required for newlib but not necesary with picolibc.
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