class Riscv64ElfGcc < Formula
  desc "GNU compiler collection for riscv64-elf"
  homepage "https://gcc.gnu.org"
  url "https://ftpmirror.gnu.org/gnu/gcc/gcc-15.2.0/gcc-15.2.0.tar.xz"
  mirror "https://ftp.gnu.org/gnu/gcc/gcc-15.2.0/gcc-15.2.0.tar.xz"
  sha256 "438fd996826b0c82485a29da03a72d71d6e3541a83ec702df4271f6fe025d24e"
  license "GPL-3.0-or-later" => { with: "GCC-exception-3.1" }

  livecheck do
    formula "gcc"
  end

  bottle do
    rebuild 1
    sha256 arm64_tahoe:   "6a6b9c6a1a1ab30d64f79c4c9b12a1b7f89bf343443c93acea3f44cb0e3fd024"
    sha256 arm64_sequoia: "eda840ed9aaacfdde29945a1325d50059be192215fd503f7ad753fe6a725a2e0"
    sha256 arm64_sonoma:  "45056ecd7ba6c56903bba4818af026245cbd835f35103ba855c3b3d4135f520e"
    sha256 sonoma:        "14b7e6f6aa5b7ba859c8e1fcae88569f7e3394d33623935ac3383c97c964e4f1"
    sha256 arm64_linux:   "76017c17d960c82448240e53d2da221ba33ceffc88a280da36da5de17847a0c4"
    sha256 x86_64_linux:  "58d842ae0c40efa2fc02e673a634723797ac19b422dc816b3e8854c4568a80da"
  end

  depends_on "gmp"
  depends_on "libmpc"
  depends_on "mpfr"
  depends_on "riscv64-elf-binutils"
  depends_on "zstd"

  on_linux do
    depends_on "zlib-ng-compat"
  end

  def install
    target = "riscv64-elf"
    mkdir "riscv64-elf-gcc-build" do
      system "../configure", "--target=#{target}",
                             "--prefix=#{prefix}",
                             "--infodir=#{info}/#{target}",
                             "--disable-nls",
                             "--without-isl",
                             "--without-headers",
                             "--with-as=#{Formula["riscv64-elf-binutils"].bin}/riscv64-elf-as",
                             "--with-ld=#{Formula["riscv64-elf-binutils"].bin}/riscv64-elf-ld",
                             "--with-system-zlib",
                             "--enable-languages=c,c++"
      system "make", "all-gcc"
      system "make", "install-gcc"
      system "make", "all-target-libgcc"
      system "make", "install-target-libgcc"

      # FSF-related man pages may conflict with native gcc
      rm_r(share/"man/man7")
    end
  end

  test do
    (testpath/"test-c.c").write <<~C
      int main(void)
      {
        int i=0;
        while(i<10) i++;
        return i;
      }
    C
    system bin/"riscv64-elf-gcc", "-c", "-o", "test-c.o", "test-c.c"
    assert_match "file format elf64-littleriscv",
                 shell_output("#{Formula["riscv64-elf-binutils"].bin}/riscv64-elf-objdump -a test-c.o")
  end
end