All Clang Again

Formula/gerbil-scheme-clang.rb

@@ -0,0 +1,65 @@
+class GerbilSchemeClang < Formula
+  # This .rb file is tangled (AKA generated) from README.org
+  desc "Opinionated dialect of Scheme designed for Systems Programming"
+  homepage "https://cons.io"
+  url "https://github.com/mighty-gerbils/gerbil.git",
+      using: :git, revision: "92b1a2f642d6ebbcd3bd223ccc0af7ec0d9a42ad"
+  version "0.18.1"
+  license any_of: ["LGPL-2.1-or-later", "Apache-2.0"]
+  # revision 0
+  head "https://github.com/mighty-gerbils/gerbil.git", using: :git, branch: "master"
+
+  depends_on "coreutils" => :build
+  depends_on "pkg-config" => :build
+  depends_on "openssl@3"
+  depends_on "sqlite"
+  depends_on "zlib"
+  on_macos do
+    depends_on "llvm"
+  end
+  on_linux do
+    depends_on "llvm"
+  end
+  fails_with :gcc do
+    cause "this is a clang build"
+  end
+  fails_with :clang do
+    cause "this is an llvm build"
+  end
+  def install
+    nproc = `nproc`.to_i - 1
+
+    if OS.mac?
+      ENV.prepend_path("PATH", "/usr/local/opt/llvm/bin")
+      ENV.prepend_path("PATH", "/opt/homebrew/opt/llvm/bin")
+    end
+
+    if OS.linux?
+      ENV.prepend_path("PATH", "/home/linuxbrew/.linuxbrew/bin")
+      ENV.prepend_path("PATH", "/home/linuxbrew/.linuxbrew/sbin")
+    end
+
+    ENV["GERBIL_GCC"] = ENV.cc.to_s
+    ENV["CC"] = ENV.cc.to_s
+
+    system ENV.cc.to_s, "--version"
+    system "./configure", "--prefix=#{prefix}", "--enable-march="
+    system "make", "-j#{nproc}"
+    system "make", "install"
+
+    # We get rid of all the non-LFSH stuff
+
+    rm prefix/"bin"
+    rm prefix/"lib"
+    rm prefix/"share"
+    mkdir prefix/"bin"
+
+    cd prefix/"current/bin" do
+      ln "gerbil", prefix/"bin", verbose: true
+      cp %w[gxc gxensemble gxi gxpkg gxprof gxtags gxtest], prefix/"bin"
+    end
+  end
+  test do
+    assert_equal "0123456789", shell_output("#{bin}/gxi -e \"(for-each write '(0 1 2 3 4 5 6 7 8 9))\"")
+  end
+end