newlib/picolibc auto detection#2934
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can you please try #2935 which is my alternate implementation |
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I'll give it a try on sunday.
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…On 14 May 2026 21:07:06 CEST, Graham Sanderson ***@***.***> wrote:
kilograham left a comment (raspberrypi/pico-sdk#2934)
can you please try #2935 which is my alternate implementation
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For Debian testing there exists no longer newlib, instead picolibc is provided.
If the user does not explicitly selects picolibc with PICO_CLIB=picolibc the linking stage returns an undefined symbol "stdout" because the wrong newlib_interface.c had been compiled in.
This PR checks in case of gcc toolchain if newlib is installed and if not tries to use picolibc instead. The logic should be generic also for other development environments than Debian.
If another toolchain is selected (like clang), the auto-detect mechanism is omitted. In this case the clang toolchain logic must catch this case. See #2700 ;-)
Fixes #2933