Function check_compiler

configure.py:1544–1642

(o)

# check involves checking the build number against an allowlist.  I'm not
# quite prepared to go that far yet.
def check_compiler(o):
  o['variables']['use_ccache_win'] = 0

  if sys.platform == 'win32':
    if options.clang_cl:
      o['variables']['clang'] = 1
      o['variables']['llvm_version'] = options.clang_cl
    else:
      o['variables']['clang'] = 0
      o['variables']['llvm_version'] = '0.0'

    if options.use_ccache_win:
      o['variables']['use_ccache_win'] = 1

    if not options.openssl_no_asm and options.dest_cpu in ('x86', 'x64'):
      nasm_version = get_nasm_version('nasm')
      o['variables']['nasm_version'] = nasm_version
      if nasm_version == '0.0':
        o['variables']['openssl_no_asm'] = 1
    return

  ok, is_clang, clang_version, gcc_version, is_apple = try_check_compiler(CXX, 'c++')
  o['variables']['clang'] = B(is_clang)
  version_str = ".".join(map(str, clang_version if is_clang else gcc_version))
  print_verbose(f"Detected {'Apple ' if is_apple else ''}{'clang ' if is_clang else ''}C++ compiler (CXX={CXX}) version: {version_str}")
  if not ok:
    warn(f'failed to autodetect C++ compiler version (CXX={CXX})')
  elif ((is_apple and clang_version < (17, 0, 0)) or (not is_apple and clang_version < (19, 1, 0))) if is_clang else gcc_version < (13, 2, 0):
    warn(f"C++ compiler (CXX={CXX}, {version_str}) too old, need g++ 13.2.0 or clang++ 19.1.0{' or Apple clang++ 17.0.0' if is_apple else ''}")

  ok, is_clang, clang_version, gcc_version, is_apple = try_check_compiler(CC, 'c')
  version_str = ".".join(map(str, clang_version if is_clang else gcc_version))
  print_verbose(f"Detected {'Apple ' if is_apple else ''}{'clang ' if is_clang else ''}C compiler (CC={CC}) version: {version_str}")
  if not ok:
    warn(f'failed to autodetect C compiler version (CC={CC})')
  elif not is_clang and gcc_version < (4, 2, 0):
    # clang 3.2 is a little white lie because any clang version will probably
    # do for the C bits.  However, we might as well encourage people to upgrade
    # to a version that is not completely ancient.
    warn(f'C compiler (CC={CC}, {version_str}) too old, need gcc 4.2 or clang 3.2')

  o['variables']['llvm_version'] = get_llvm_version(CC) if is_clang else '0.0'

  # cargo and rustc are needed for Temporal.
  if not options.v8_disable_temporal_support and not options.shared_temporal_capi:
    # Minimum cargo and rustc versions should match values in BUILDING.md.
    min_cargo_ver_tuple = (1, 82)
    min_rustc_ver_tuple = (1, 82)
    cargo = os.environ.get('CARGO', 'cargo')
    cargo_ver = get_cargo_version(cargo)
    print_verbose(f'Detected cargo (CARGO={cargo}): {cargo_ver}')
    if cargo_ver == '0.0':
      # Error if --v8-enable-temporal-support is explicitly set,
      # otherwise disable support for Temporal.
      if options.v8_enable_temporal_support:
        error(''&#x27;No acceptable cargo found!

       Enabling Temporal support requires cargo.