cafeobj: build with sbcl 2.4.11, workaround for Linux

Author: cho-m

Formula/c/cafeobj.rb

@@ -26,21 +26,46 @@ class Cafeobj < Formula
     sha256 x86_64_linux:  "779108ed08023bc358ac5276e28d7d7f0f4febc0dc99ea67ef04da3ac8d56ae2"
   end
 
-  depends_on "sbcl"
+  depends_on "sbcl" => :build
   depends_on "zstd"
 
+  # Does not build with SBCL 2.5: https://github.com/CafeOBJ/cafeobj/issues/8
+  resource "sbcl" do
+    url "https://downloads.sourceforge.net/project/sbcl/sbcl/2.4.11/sbcl-2.4.11-source.tar.bz2"
+    sha256 "4f03e5846f35834c10700bbe232da41ba4bdbf81bdccacb1d4de24297657a415"
+  end
+
   def install
+    resource("sbcl").stage do
+      ENV["SBCL_MACOSX_VERSION_MIN"] = MacOS.version.to_s if OS.mac?
+      system "sh", "make.sh", "--prefix=#{buildpath}/sbcl", "--with-sb-core-compression", "--with-sb-thread"
+      system "sh", "install.sh"
+      ENV.prepend_path "PATH", buildpath/"sbcl/bin"
+    end
+
     # Exclude unrecognized options
     args = std_configure_args.reject { |s| s["--disable-debug"] || s["--disable-dependency-tracking"] }
 
-    system "./configure", "--with-lisp=sbcl", "--with-lispdir=#{share}/emacs/site-lisp/cafeobj", *args
+    system "./configure", "--with-lisp=sbcl", "--with-lispdir=#{elisp}", *args
     system "make", "install"
+
+    # Work around patchelf corrupting the SBCL core which is appended to binary
+    # TODO: Find a better way to handle this in brew, either automatically or via DSL
+    if OS.linux? && build.bottle? && build.stable?
+      cp lib/"cafeobj-#{version.major_minor}/sbcl/cafeobj.sbcl", prefix
+      Utils::Gzip.compress(prefix/"cafeobj.sbcl")
+    end
   end
 
-  test do
-    # Fails in Linux CI with "Can't find sbcl.core"
-    return if OS.linux? && ENV["HOMEBREW_GITHUB_ACTIONS"]
+  def post_install
+    if (prefix/"cafeobj.sbcl.gz").exist?
+      system "gunzip", prefix/"cafeobj.sbcl.gz"
+      (prefix/"cafeobj.sbcl").chmod (lib/"cafeobj-#{version.major_minor}/sbcl/cafeobj.sbcl").lstat.mode
+      (lib/"cafeobj-#{version.major_minor}/sbcl").install prefix/"cafeobj.sbcl"
+    end
+  end
 
+  test do
     system bin/"cafeobj", "-batch"
   end
 end