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Formula/gcc/bootstrap-gcc.rb

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+class BootstrapGcc < Formula
+  desc "GNU compiler collection"
+  homepage "https://gcc.gnu.org/"
+  url "https://ftp.gnu.org/gnu/gcc/gcc-14.1.0/gcc-14.1.0.tar.xz"
+  sha256 "e283c654987afe3de9d8080bc0bd79534b5ca0d681a73a11ff2b5d3767426840"
+  license "GPL-3.0-or-later" => { with: "GCC-exception-3.1" }
+
+  keg_only "bootstrap formula"
+
+  depends_on "arm64-apple-darwin-gcc" => :build
+  depends_on "doxygen"   => :build
+  depends_on "gcc-strap" => :build
+  depends_on "gettext"   => :build
+  depends_on "make"      => :build
+  depends_on "python"    => :build
+  depends_on "rust"      => :build
+  depends_on "texinfo"   => :build
+  depends_on xcode: :build
+
+  # The bottles are built on systems with the CLT installed, and do not work
+  # out of the box on Xcode-only systems due to an incorrect sysroot.
+  pour_bottle? only_if: :clt_installed
+
+  # GCC bootstraps itself, so it is OK to have an incompatible C++ stdlib
+  cxxstdlib_check :skip
+
+  resource "isl" do
+    url "https://libisl.sourceforge.io/isl-0.26.tar.xz"
+    sha256 "a0b5cb06d24f9fa9e77b55fabbe9a3c94a336190345c2555f9915bb38e976504"
+  end
+
+  resource "mpc" do
+    url "https://ftp.gnu.org/gnu/mpc/mpc-1.3.1.tar.gz"
+    sha256 "ab642492f5cf882b74aa0cb730cd410a81edcdbec895183ce930e706c1c759b8"
+  end
+
+  resource "mpfr" do
+    url "https://ftp.gnu.org/gnu/mpfr/mpfr-4.2.1.tar.xz"
+    sha256 "277807353a6726978996945af13e52829e3abd7a9a5b7fb2793894e18f1fcbb2"
+  end
+
+  resource "gmp" do
+    url "https://ftp.gnu.org/gnu/gmp/gmp-6.3.0.tar.xz"
+    sha256 "a3c2b80201b89e68616f4ad30bc66aee4927c3ce50e33929ca819d5c43538898"
+  end
+
+  resource "gettext" do
+    url "https://ftp.gnu.org/gnu/gettext/gettext-0.22.5.tar.gz"
+    sha256 "ec1705b1e969b83a9f073144ec806151db88127f5e40fe5a94cb6c8fa48996a0"
+  end
+
+  patch do
+    url "https://raw.githubusercontent.com/Homebrew/formula-patches/82b5c1cd38826ab67ac7fc498a8fe74376a40f4a/gcc/gcc-14.1.0.diff"
+    sha256 "1529cff128792fe197ede301a81b02036c8168cb0338df21e4bc7aafe755305a"
+  end
+
+  def install
+    ENV.delete "CC"
+    ENV.delete "CXX"
+    ENV.delete "LD"
+
+    inreplace "libgcc/config/t-darwin-min-5", "10.5", "11.7"
+
+    triple = "#{Hardware::CPU.arch}-apple-darwin#{OS.kernel_version.major}"
+    target = "arm64-apple-darwin#{OS.kernel_version.major}"
+    languages = %w[ada c c++ d]
+    sr = MacOS.sdk_path.to_str.tr "0-9", ""
+
+    configure_args = %W[
+      --build=#{triple}
+      --host=#{target}
+      --target=#{target}
+      --prefix=#{prefix}
+      --with-as=/usr/bin/as
+      --with-ld=/usr/bin/ld
+      --with-dsymutil=/usr/bin/dsymutil
+      --disable-bootstrap
+      --disable-multilib
+      --enable-checking=release
+      --enable-languages=#{languages.join(",")}
+      --with-gcc-major-version-only
+      --with-sysroot=#{sr}
+      --without-zstd
+    ]
+
+    resources.each { |r| r.stage buildpath/r.name }
+    mkdir "build" do
+      system "../configure", *configure_args
+      system "gmake"
+      system "gmake", "install", "-j", "1"
+    end
+
+    cross = Formula["arm64-apple-darwin-gcc"]
+    gcc_s = (cross.prefix/"#{target}/lib"/shared_library("libgcc_s", "1.1")).to_s
+    gcc_ss = (lib/shared_library("libgcc_s", "1.1")).to_s
+    Pathname.glob(lib/"gcc/#{target}/#{version.major}/adalib"/shared_library("*")).each do |l|
+      d = MachO::Tools.dylibs l
+      MachO::Tools.change_install_name l.to_s, gcc_s, gcc_ss if d.include? gcc_s
+    end
+
+    libstdcxx = lib/shared_library("libstdc++", "6")
+    rm libstdcxx
+    cp cross.prefix/"#{target}/lib"/shared_library("libstdc++", "6"), libstdcxx
+    MachO::Tools.change_dylib_id libstdcxx.to_s, libstdcxx.to_s
+  end
+
+  test do
+    system "echo"
+  end
+end