Improved build scripts and config files

1 files changed, 139 insertions, 0 deletions

diff --git a/tasks/mrbgem_spec.rake b/tasks/mrbgem_spec.rake
new file mode 100644
index 000000000..e21e0b670
--- /dev/null
+++ b/tasks/mrbgem_spec.rake
@@ -0,0 +1,139 @@
+require 'pathname'
+require 'forwardable'
+
+module MRuby
+  module Gem
+    class << self
+      attr_accessor :current
+    end
+    LinkerConfig = Struct.new(:libraries, :library_paths, :flags) 
+
+    class Specification
+      include Rake::DSL
+      extend Forwardable
+      def_delegators :@build, :filename, :objfile, :libfile, :exefile
+
+      attr_accessor :name, :dir, :build
+      alias mruby build
+      attr_accessor :build_config_initializer
+
+      attr_accessor :licenses, :authors
+      alias :license= :licenses=
+      alias :author= :authors=
+
+      attr_accessor :rbfiles, :objs
+      attr_accessor :test_objs, :test_rbfiles
+      attr_accessor :test_preload
+
+      attr_block MRuby::Build::COMMANDS
+
+      def initialize(name, &block)
+        @name = name
+        @initializer = block
+        MRuby::Gem.current = self
+      end
+
+      def setup
+        MRuby::Gem.current = self
+        MRuby::Build::COMMANDS.each do |command|
+          instance_variable_set("@#{command}", @build.send(command).clone)
+        end
+        @linker = LinkerConfig.new([], [], [])
+
+        compilers.each do |compiler|
+          compiler.defines -= %w(DISABLE_GEMS)
+          compiler.include_paths << "#{dir}/include"
+        end
+
+        @rbfiles = Dir.glob("#{dir}/mrblib/*.rb")
+        @objs = Dir.glob("#{dir}/src/*.{c,cpp,m,asm,S}").map { |f| objfile(f.relative_path_from(@dir).to_s.pathmap("#{build_dir}/%X")) }
+        @objs << objfile("#{build_dir}/gem_init")
+
+        @test_rbfiles = Dir.glob("#{dir}/test/*.rb")
+        @test_objs = Dir.glob("#{dir}/test/*.{c,cpp,m,asm,S}").map { |f| objfile(f.relative_path_from(dir).to_s.pathmap("#{build_dir}/%X")) }
+        @test_preload = 'test/assert.rb'
+
+        instance_eval(&@initializer)
+
+        if !name || !licenses || !authors
+          fail "#{name || dir} required to set name, license(s) and author(s)"
+        end
+
+        build.libmruby << @objs
+
+        instance_eval(&@build_config_initializer) if @build_config_initializer
+
+        compilers.each do |compiler|
+          compiler.define_rules build_dir, "#{dir}/"
+        end
+
+        define_gem_init_builder
+      end
+
+      def build_dir
+        "#{build.build_dir}/mrbgems/#{name}"
+      end
+
+      def testlib
+        libfile("#{build_dir}/libmrb-#{name}-gem-test")
+      end
+
+      def funcname
+        @funcname ||= @name.gsub('-', '_')
+      end
+
+      def compilers
+        MRuby::Build::COMPILERS.map do |c|
+          instance_variable_get("@#{c}")
+        end
+      end
+
+      def define_gem_init_builder
+        file objfile("#{build_dir}/gem_init") => "#{build_dir}/gem_init.c"
+        file "#{build_dir}/gem_init.c" => [build.mrbcfile] + rbfiles do |t|
+          FileUtils.mkdir_p build_dir
+          generate_gem_init("#{build_dir}/gem_init.c")
+        end
+      end
+
+      def generate_gem_init(fname)
+        open(fname, 'w') do |f|
+          print_gem_init_header f
+          build.mrbc.run f, rbfiles, "gem_mrblib_irep_#{funcname}" unless rbfiles.empty?
+          f.puts %Q[void mrb_#{funcname}_gem_init(mrb_state *mrb);]
+          f.puts %Q[void GENERATED_TMP_mrb_#{funcname}_gem_init(mrb_state *mrb) {]
+          f.puts %Q[  int ai = mrb_gc_arena_save(mrb);]
+          f.puts %Q[  mrb_#{funcname}_gem_init(mrb);] if objs != [objfile("#{build_dir}/gem_init")]
+          unless rbfiles.empty?
+            f.puts %Q[  mrb_load_irep(mrb, gem_mrblib_irep_#{funcname});]
+            f.puts %Q[  if (mrb->exc) {]
+            f.puts %Q[    mrb_p(mrb, mrb_obj_value(mrb->exc));]
+            f.puts %Q[    exit(0);]
+            f.puts %Q[  }]
+          end
+          f.puts %Q[  mrb_gc_arena_restore(mrb, ai);]
+          f.puts %Q[}]
+        end
+      end # generate_gem_init
+
+      def print_gem_init_header(f)
+        f.puts %Q[/*]
+        f.puts %Q[ * This file is loading the irep]
+        f.puts %Q[ * Ruby GEM code.]
+        f.puts %Q[ *]
+        f.puts %Q[ * IMPORTANT:]
+        f.puts %Q[ *   This file was generated!]
+        f.puts %Q[ *   All manual changes will get lost.]
+        f.puts %Q[ */]
+        f.puts %Q[#include "mruby.h"]
+        f.puts %Q[#include "mruby/irep.h"]
+        f.puts %Q[#include "mruby/dump.h"]
+        f.puts %Q[#include "mruby/string.h"]
+        f.puts %Q[#include "mruby/proc.h"]
+        f.puts %Q[#include "mruby/variable.h"]
+        f.puts %Q[#include "mruby/array.h"]
+      end
+
+    end # Specification
+  end # Gem
+end # MRuby