[Snek] [keith-packard/snek] cb807c: Updates for latest arm/riscv toolchains

[Keith Packard]

  Branch: refs/heads/main
  Home:   https://github.com/keith-packard/snek
  Commit: cb807c106b850e1bdce04ce495b624e5fe3d02e5
      https://github.com/keith-packard/snek/commit/cb807c106b850e1bdce04ce495b624e5fe3d02e5
  Author: Keith Packard <keithp at keithp.com>
  Date:   2026-01-26 (Mon, 26 Jan 2026)

  Changed paths:
    M chips/qemu/snek-qemu.defs
    M chips/samd21/snek-samd21.defs
    M ports/qemu-arm/Makefile
    M ports/qemu-arm/snek-qemu-arm.ld
    M ports/qemu-riscv/Makefile
    M ports/qemu-riscv/snek-qemu-riscv.ld

  Log Message:
  -----------
  Updates for latest arm/riscv toolchains

Switch to -O2 now that the C library is available in an -O2 variant.
Assume recent enough picolibc that --crt0=semihost is available.
Have qemu linker scripts INCLUDE picolibc.ld

Signed-off-by: Keith Packard <keithp at keithp.com>


  Commit: e0229894da206273e7ab7780f9c89bd86a19fcae
      https://github.com/keith-packard/snek/commit/e0229894da206273e7ab7780f9c89bd86a19fcae
  Author: Keith Packard <keithp at keithp.com>
  Date:   2026-01-26 (Mon, 26 Jan 2026)

  Changed paths:
    M doc/Makefile

  Log Message:
  -----------
  doc: use '-a optimize' for all pdf generation

Signed-off-by: Keith Packard <keithp at keithp.com>


Compare: https://github.com/keith-packard/snek/compare/3cf62e3840b2...e0229894da20

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