Add AVR-GCC 14.1.0 formula

Formula/avr-gcc@14.rb

@@ -0,0 +1,186 @@
+class AvrGccAT14 < Formula
+  desc "GNU compiler collection for AVR 8-bit and 32-bit Microcontrollers"
+  homepage "https://gcc.gnu.org/"
+
+  url "https://ftp.gnu.org/gnu/gcc/gcc-14.1.0/gcc-14.1.0.tar.xz"
+  mirror "https://ftpmirror.gnu.org/gcc/gcc-14.1.0/gcc-14.1.0.tar.xz"
+  sha256 "e283c654987afe3de9d8080bc0bd79534b5ca0d681a73a11ff2b5d3767426840"
+
+  license "GPL-3.0-or-later" => { with: "GCC-exception-3.1" }
+
+  head "https://gcc.gnu.org/git/gcc.git", branch: "master"
+
+  # 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
+
+  keg_only "it might interfere with other version of avr-gcc.\n" \
+           "This is useful if you want to have multiple version of avr-gcc\n" \
+           "installed on the same machine"
+
+  option "with-ATMega168pbSupport", "Add ATMega168pb Support to avr-gcc"
+
+  # automake & autoconf are needed to build from source
+  # with the ATMega168pbSupport option.
+  depends_on "autoconf" => :build
+  depends_on "automake" => :build
+
+  depends_on "avr-binutils"
+
+  depends_on "gmp"
+  depends_on "isl"
+  depends_on "libmpc"
+  depends_on "mpfr"
+
+  uses_from_macos "zlib"
+
+  # GCC bootstraps itself, so it is OK to have an incompatible C++ stdlib
+  cxxstdlib_check :skip
+
+  current_build = build
+
+  resource "avr-libc" do
+    url "https://download.savannah.gnu.org/releases/avr-libc/avr-libc-2.1.0.tar.bz2"
+    mirror "https://download-mirror.savannah.gnu.org/releases/avr-libc/avr-libc-2.1.0.tar.bz2"
+    sha256 "0b84cee5c08b5d5cba67c36125e5aaa85251bc9accfba5773bfa87bc34b654e8"
+
+    if current_build.with? "ATMega168pbSupport"
+      patch do
+        url "https://raw.githubusercontent.com/osx-cross/homebrew-avr/d2e2566b06b90355952ed996707a0a1a24673cd3/Patch/avr-libc-add-mcu-atmega168pb.patch"
+        sha256 "7a2bf2e11cfd9335e8e143eecb94480b4871e8e1ac54392c2ee2d89010b43711"
+      end
+    end
+  end
+
+  # Branch from the Darwin maintainer of GCC, with a few generic fixes and
+  # Apple Silicon support, located at https://github.com/iains/gcc-14-branch
+  if Hardware::CPU.arm?
+    patch do
+      url "https://raw.githubusercontent.com/Homebrew/formula-patches/82b5c1cd38826ab67ac7fc498a8fe74376a40f4a/gcc/gcc-14.1.0.diff"
+      sha256 "1529cff128792fe197ede301a81b02036c8168cb0338df21e4bc7aafe755305a"
+    end
+  end
+
+  def version_suffix
+    if build.head?
+      "HEAD"
+    else
+      version.major.to_s
+    end
+  end
+
+  def install
+    # GCC will suffer build errors if forced to use a particular linker.
+    ENV.delete "LD"
+
+    # Even when suffixes are appended, the info pages conflict when
+    # install-info is run so pretend we have an outdated makeinfo
+    # to prevent their build.
+    ENV["gcc_cv_prog_makeinfo_modern"] = "no"
+
+    languages = ["c", "c++"]
+
+    pkgversion = "Homebrew AVR GCC #{pkg_version} #{build.used_options*" "}".strip
+
+    args = %W[
+      --target=avr
+      --prefix=#{prefix}
+      --libdir=#{lib}/avr-gcc/#{version_suffix}
+
+      --enable-languages=#{languages.join(",")}
+
+      --with-ld=#{Formula["avr-binutils"].opt_bin/"avr-ld"}
+      --with-as=#{Formula["avr-binutils"].opt_bin/"avr-as"}
+
+      --disable-nls
+      --disable-libssp
+      --disable-shared
+      --disable-threads
+      --disable-libgomp
+
+      --with-dwarf2
+      --with-avrlibc
+
+      --with-system-zlib
+
+      --with-pkgversion=#{pkgversion}
+      --with-bugurl=https://github.com/osx-cross/homebrew-avr/issues
+    ]
+
+    # Avoid reference to sed shim
+    args << "SED=/usr/bin/sed"
+
+    mkdir "build" do
+      system "../configure", *args
+
+      # Use -headerpad_max_install_names in the build,
+      # otherwise updated load commands won't fit in the Mach-O header.
+      # This is needed because `gcc` avoids the superenv shim.
+      system "make", "BOOT_LDFLAGS=-Wl,-headerpad_max_install_names"
+
+      system "make", "install"
+    end
+
+    # info and man7 files conflict with native gcc
+    info.rmtree
+    man7.rmtree
+
+    current_build = build
+
+    resource("avr-libc").stage do
+      ENV.prepend_path "PATH", bin
+
+      ENV.delete "CFLAGS"
+      ENV.delete "CXXFLAGS"
+      ENV.delete "LD"
+      ENV.delete "CC"
+      ENV.delete "CXX"
+
+      # avr-libc ships with outdated config.guess and config.sub scripts that
+      # do not support Apple ARM systems, causing the configure script to fail.
+      if OS.mac? && Hardware::CPU.arm?
+        ENV["ac_cv_build"] = "aarch64-apple-darwin"
+        puts "Forcing build system to aarch64-apple-darwin."
+      end
+
+      system "./bootstrap" if current_build.with? "ATMega168pbSupport"
+      system "./configure", "--prefix=#{prefix}", "--host=avr"
+      system "make", "install"
+    end
+  end
+
+  test do
+    ENV.delete "CPATH"
+
+    hello_c = <<~EOS
+      #define F_CPU 8000000UL
+      #include <avr/io.h>
+      #include <util/delay.h>
+      int main (void) {
+        DDRB |= (1 << PB0);
+        while(1) {
+          PORTB ^= (1 << PB0);
+          _delay_ms(500);
+        }
+        return 0;
+      }
+    EOS
+
+    hello_c_hex = <<~EOS
+      :10000000209A91E085B1892785B92FEF34E38CE000
+      :0E001000215030408040E1F700C00000F3CFE7
+      :00000001FF
+    EOS
+
+    hello_c_hex.gsub!("\n", "\r\n")
+
+    (testpath/"hello.c").write(hello_c)
+
+    system "#{bin}/avr-gcc", "-mmcu=atmega328p", "-Os", "-c", "hello.c", "-o", "hello.c.o", "--verbose"
+    system "#{bin}/avr-gcc", "hello.c.o", "-o", "hello.c.elf"
+    system "#{Formula["avr-binutils"].opt_bin}/avr-objcopy", "-O", "ihex", "-j", ".text", "-j", ".data", \
+      "hello.c.elf", "hello.c.hex"
+
+    assert_equal `cat hello.c.hex`, hello_c_hex
+  end
+end

README.md

@@ -12,6 +12,7 @@ AVR is a popular family of micro-controllers, used for example in the [Arduino]
 - GCC 10.3.0 - provided as `avr-gcc@10`
 - GCC 11.3.0 - provided as `avr-gcc@11`
 - GCC 12.2.0 - provided as `avr-gcc@12`
+- GCC 14.1.0 - provided as `avr-gcc@14`
 - Binutils 2.40.0 - provided as `avr-binutils`
 - AVR Libc 2.1.0 - provided as a resource for each GCC formula
 - GDB 10.1 - provided as `avr-gdb`