[all-commits] [llvm/llvm-project] a6643f: [libc++] Add support for picolibc and newlib in RU...

[Volodymyr Turanskyy via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a6643f27ecdaaff2945a1acd213a745c1526c525
      https://github.com/llvm/llvm-project/commit/a6643f27ecdaaff2945a1acd213a745c1526c525
  Author: Volodymyr Turanskyy <vturanskyy at gmail.com>
  Date:   2025-11-28 (Fri, 28 Nov 2025)

  Changed paths:
    M libcxx/CMakeLists.txt
    M libcxx/include/__config_site.in
    M libcxx/include/__configuration/platform.h
    M libcxx/include/__cxx03/__fwd/ios.h
    M libcxx/include/__cxx03/__locale
    M libcxx/include/__cxx03/__locale_dir/locale_base_api.h
    M libcxx/include/__cxx03/fstream
    M libcxx/include/__cxx03/locale
    M libcxx/include/__cxx03/regex
    M libcxx/include/__fwd/ios.h
    M libcxx/include/__locale
    M libcxx/include/__locale_dir/messages.h
    M libcxx/include/fstream
    M libcxx/include/regex
    M libcxx/src/include/config_elast.h
    M libcxx/src/locale.cpp
    M libcxx/test/libcxx/system_reserved_names.gen.py
    M libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.objects/generic_category.pass.cpp
    M libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.objects/system_category.pass.cpp
    M libcxx/test/support/platform_support.h
    M libcxx/utils/ci/run-buildbot
    M runtimes/cmake/Modules/HandleLibC.cmake

  Log Message:
  -----------
  [libc++] Add support for picolibc and newlib in RUNTIMES_USE_LIBC (#147956)

This replaces detection of picolibc in libc++ (by checking for and
including picolibc.h) with using RUNTIMES_USE_LIBC build time option
intriduced in https://github.com/llvm/llvm-project/pull/134893
RUNTIMES_USE_LIBC is extended to accept picolibc and newlib.

Detection of picolibc via the header is kept as a deprecated feature to
avoid breaking builds.

libc++ is updated to use dedicated LIBCXX_LIBC_NEWLIB macro to check for
newlib specific conditions instead of less informative _NEWLIB_VERSION

---------

Co-authored-by: Louis Dionne <ldionne.2 at gmail.com>



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications