3 files changed, 32 insertions, 2 deletions
diff --git a/rakelib/compiler.rake b/rakelib/compiler.rake
new file mode 100644
index 0000000..f443407
--- /dev/null
+++ b/rakelib/compiler.rake
@@ -0,0 +1,32 @@
+# This Source Code Form is subject to the terms of the Mozilla Public License,
+# v. 2.0. If a copy of the MPL was not distributed with this file, You can
+# obtain one at https://mozilla.org/MPL/2.0/. -}
+# frozen_string_literal: true
+
+require 'rake/loaders/makefile'
+require 'rake/clean'
+
+CLEAN.include 'build/gcc'
+
+Rake.application.add_loader('d', Rake::MakefileLoader.new)
+FileList['build/gcc/**/*.d'].each { |file| import file }
+
+rule(/gcc\/.+\.o$/ => ->(file) {
+  source = Pathname.new('source') +
+    Pathname.new(file).relative_path_from('build/gcc').sub_ext('.elna')
+
+  [source, 'build/host/install/bin/gelna']
+}) do |t|
+  Pathname.new(t.name).dirname.mkpath
+
+  sh t.prerequisites.last, '-c', '-MD', '-MP', '-O0', '-g', '-I', 'source', '-o', t.name, t.source.to_s
+end
+
+file 'build/gcc/elna' => FileList['source/**/*.elna'].reject { |file|
+  file != file.downcase
+}.map { |file|
+  Pathname.new('build/gcc') +
+    Pathname.new(file).relative_path_from('source').sub_ext('.o')
+} do |t|
+  sh 'build/host/install/bin/gcc', '-o', t.name, *t.prerequisites
+end
diff --git a/rakelib/doc.rake b/rakelib/doc.rake
index 7838871..5f40107 100644
--- a/rakelib/doc.rake
+++ b/rakelib/doc.rake
@@ -3,7 +3,6 @@
 # obtain one at https://mozilla.org/MPL/2.0/.
 # frozen_string_literal: true
 
-require 'pathname'
 require 'rake/clean'
 
 CLEAN.include 'build/doc'
diff --git a/rakelib/gcc.rake b/rakelib/gcc.rake
index 30175eb..7ee9f5c 100644
--- a/rakelib/gcc.rake
+++ b/rakelib/gcc.rake
@@ -7,7 +7,6 @@ require 'fileutils'
 require 'uri'
 require 'net/http'
 require 'open3'
-require 'pathname'
 
 # Use Homebrew GCC if available (it uses libstdc++, avoiding
 # macOS-specific libc++ incompatibilities in GCC's own sources).