[all-commits] [llvm/llvm-project] 68ff22: [libc] Modular printf option (float only)

[Daniel Thornburgh via All-commits]

  Branch: refs/heads/users/mysterymath/modular-printf/libc
  Home:   https://github.com/llvm/llvm-project
  Commit: 68ff227b10bc8bd6c58526790e19787cbc554fb6
      https://github.com/llvm/llvm-project/commit/68ff227b10bc8bd6c58526790e19787cbc554fb6
  Author: Daniel Thornburgh <dthorn at google.com>
  Date:   2025-07-15 (Tue, 15 Jul 2025)

  Changed paths:
    M libc/config/config.json
    M libc/docs/configure.rst
    M libc/src/stdio/generic/CMakeLists.txt
    A libc/src/stdio/generic/printf_modular.cpp
    M libc/src/stdio/printf.h
    M libc/src/stdio/printf_core/CMakeLists.txt
    M libc/src/stdio/printf_core/float_dec_converter.h
    M libc/src/stdio/printf_core/float_dec_converter_limited.h
    M libc/src/stdio/printf_core/float_hex_converter.h
    A libc/src/stdio/printf_core/float_impl.cpp
    M libc/src/stdio/printf_core/parser.h
    M libc/src/stdio/printf_core/printf_config.h
    M libc/src/stdio/printf_core/printf_main.h
    M libc/src/stdio/printf_core/vfprintf_internal.h

  Log Message:
  -----------
  [libc] Modular printf option (float only)

This adds LIBC_CONF_PRINTF_MODULAR, which causes floating point support
(later, others) to be weakly linked into the implementation.
__printf_modular becomes the main entry point of the implementaiton, an
printf itself wraps __printf_modular. printf it also contains a
BFD_RELOC_NONE relocation to bring in the float aspect.

See issue #146159 for context.



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