Add homebrew files for macOS

macOS-env/README.md

@@ -0,0 +1,11 @@
+# MacOS environment
+
+* x86_64_elf_*:
+    <https://github.com/altkatz/homebrew-gcc_cross_compilers>
+
+* grub.rb:
+    <https://github.com/nativeos/homebrew-i386-elf-toolchain/blob/master/Formula/i386-elf-grub.rb>
+
+* objconv.rb:
+    <https://github.com/hawkw/homebrew-grub/blob/master/Formula/objconv.rb>
+    Change SHA256

macOS-env/grub.rb

@@ -0,0 +1,31 @@
+class Grub < Formula
+  desc "GNU GRUB 2 targetting i386-elf"
+  homepage "https://www.gnu.org/software/grub/"
+  url "https://ftp.gnu.org/gnu/grub/grub-2.02.tar.xz"
+  version "2.02"
+  sha256 "810b3798d316394f94096ec2797909dbf23c858e48f7b3830826b8daa06b7b0f"
+
+  depends_on "i386-elf-gcc"
+
+  def install
+    mkdir "grub-build" do
+      system "../configure",
+        "--disable-nls",
+        "--disable-werror",
+        "--disable-efiemu",
+        "--target=i386-elf",
+        "--prefix=#{prefix}",
+        "TARGET_CC=i386-elf-gcc",
+        "TARGET_NM=i386-elf-nm",
+        "TARGET_OBJCOPY=i386-elf-objcopy",
+        "TARGET_RANLIB=i386-elf-ranlib",
+        "TARGET_STRIP=i386-elf-strip"
+
+      system "make", "install"
+    end
+  end
+
+  test do
+    system "grub-shell", "--version"
+  end
+end

macOS-env/objconv.rb

@@ -0,0 +1,23 @@
+class Objconv < Formula
+  desc "Object file converter and disassembler"
+  homepage "http://www.agner.org/optimize/#objconv"
+  url "http://www.agner.org/optimize/objconv.zip"
+  version "2.44"
+  sha256 "f2c0c4cd6ff227e76ffed5796953cd9ae9eb228847ca9a14dba6392c573bb7a4"
+  def install
+    system "unzip", "source.zip",
+                    "-dsrc"
+    # objconv doesn't have a Makefile, so we have to call
+    # the C++ compiler ourselves
+    system ENV.cxx, "-o", "objconv",
+                    "-O2",
+                    *Dir["src/*.cpp"],
+                    "--prefix=#{prefix}"
+    bin.install "objconv"
+  end
+
+  test do
+    system "#{bin}/objconv", "-h"
+    # TODO: write better tests
+  end
+end