brew/Library/Homebrew/extend/os/mac/extend/ENV/std.rb

# typed: false
# frozen_string_literal: true

module Stdenv
  # @private

  undef homebrew_extra_pkg_config_paths

  def homebrew_extra_pkg_config_paths
    ["#{HOMEBREW_LIBRARY}/Homebrew/os/mac/pkgconfig/#{MacOS.version}"]
  end

  def setup_build_environment(
    formula: nil,
    cc: nil,
    build_bottle: false,
    bottle_arch: nil,
    testing_formula: false,
    debug_symbols: false
  )
    generic_setup_build_environment(
      formula: formula, cc: cc, build_bottle: build_bottle,
      bottle_arch: bottle_arch, testing_formula: testing_formula,
      debug_symbols: debug_symbols,
    )

    append "LDFLAGS", "-Wl,-headerpad_max_install_names"

    # sed is strict, and errors out when it encounters files with
    # mixed character sets
    delete("LC_ALL")
    self["LC_CTYPE"] = "C"

    # Add lib and include etc. from the current macosxsdk to compiler flags:
    macosxsdk(formula: @formula, testing_formula: testing_formula)

    return unless MacOS::Xcode.without_clt?

    append_path "PATH", "#{MacOS::Xcode.prefix}/usr/bin"
    append_path "PATH", "#{MacOS::Xcode.toolchain_path}/usr/bin"
  end

  def remove_macosxsdk(version = nil)
    # Clear all lib and include dirs from CFLAGS, CPPFLAGS, LDFLAGS that were
    # previously added by macosxsdk
    remove_from_cflags(/ ?-mmacosx-version-min=\d+\.\d+/)
    delete("CPATH")
    remove "LDFLAGS", "-L#{HOMEBREW_PREFIX}/lib"

    sdk = self["SDKROOT"] || MacOS.sdk_path_if_needed(version)
    return unless sdk

    delete("SDKROOT")
    remove_from_cflags "-isysroot#{sdk}"
    remove "CPPFLAGS", "-isysroot#{sdk}"
    remove "LDFLAGS", "-isysroot#{sdk}"
    if HOMEBREW_PREFIX.to_s == "/usr/local"
      delete("CMAKE_PREFIX_PATH")
    else
      # It was set in setup_build_environment, so we have to restore it here.
      self["CMAKE_PREFIX_PATH"] = HOMEBREW_PREFIX.to_s
    end
    remove "CMAKE_FRAMEWORK_PATH", "#{sdk}/System/Library/Frameworks"
  end

  def macosxsdk(version = nil, formula: nil, testing_formula: false)
    # Sets all needed lib and include dirs to CFLAGS, CPPFLAGS, LDFLAGS.
    remove_macosxsdk
    min_version = version || MacOS.version
    append_to_cflags("-mmacosx-version-min=#{min_version}")
    self["CPATH"] = "#{HOMEBREW_PREFIX}/include"
    prepend "LDFLAGS", "-L#{HOMEBREW_PREFIX}/lib"

    sdk = if formula
      MacOS.sdk_for_formula(formula, version, check_only_runtime_requirements: testing_formula)
    else
      MacOS.sdk(version)
    end
    return if !MacOS.sdk_root_needed? && sdk&.source != :xcode

    Homebrew::Diagnostic.checks(:fatal_setup_build_environment_checks)
    sdk = sdk.path

    # Extra setup to support Xcode 4.3+ without CLT.
    self["SDKROOT"] = sdk
    # Tell clang/gcc where system include's are:
    append_path "CPATH", "#{sdk}/usr/include"
    # The -isysroot is needed, too, because of the Frameworks
    append_to_cflags "-isysroot#{sdk}"
    append "CPPFLAGS", "-isysroot#{sdk}"
    # And the linker needs to find sdk/usr/lib
    append "LDFLAGS", "-isysroot#{sdk}"
    # Needed to build cmake itself and perhaps some cmake projects:
    append_path "CMAKE_PREFIX_PATH", "#{sdk}/usr"
    append_path "CMAKE_FRAMEWORK_PATH", "#{sdk}/System/Library/Frameworks"
  end

  # Some configure scripts won't find libxml2 without help.
  # This is a no-op with macOS SDK 10.15.4 and later.
  def libxml2
    sdk = self["SDKROOT"] || MacOS.sdk_path_if_needed
    if !sdk
      append "CPPFLAGS", "-I/usr/include/libxml2"
    elsif !Pathname("#{sdk}/usr/include/libxml").directory?
      # Use the includes form the sdk
      append "CPPFLAGS", "-I#{sdk}/usr/include/libxml2"
    end
  end

  def no_weak_imports
    append "LDFLAGS", "-Wl,-no_weak_imports" if no_weak_imports_support?
  end
end