Ruby 4: Enable YJIT/ZJIT

Author: bastelfreak

configs/components/ruby-4.0.rb

@@ -168,14 +168,32 @@
     pkg.configure { ['bash autogen.sh'] }
   end
 
+  # we want to provide the different just in time compilers where possible
+  # they require a modern rust version
+  # https://docs.ruby-lang.org/en/master/jit/zjit_md.html zjit: Rust 1.85.0
+  # https://docs.ruby-lang.org/en/master/jit/yjit_md.html yjit: Rust 1.58.0
+  platforms_without_rust = [
+    'debian-11-aarch64',
+    'debian-11-amd64',
+    'macos-all-arm64',
+    'macos-all-x86_64',
+    'windows-all-x64',
+  ]
+  if platforms_without_rust.include? platform.name
+    configure_flags = ''
+  else
+    pkg.build_requires 'rustc'
+    configure_flags = '--enable-yjit --enable-zjit'
+  end
   pkg.configure do
     [
       "bash configure \
         --enable-shared \
         --disable-install-doc \
         --disable-install-rdoc \
         #{settings[:host]} \
-        #{special_flags}"
+        #{special_flags} \
+        #{configure_flags}"
     ]
   end