From 6460ef77bcceb17d80d1b46a07b28fada19737c8 Mon Sep 17 00:00:00 2001
From: take_cheeze <takechi101010@gmail.com>
Date: Mon, 6 Apr 2015 15:20:13 +0900
Subject: Compile mruby compiler as mrbgem. Compiler codes is moved to
 "mruby-compiler". Executable `mrbc` is moved to "mruby-bin-mrbc".

---
 tasks/mruby_build.rake | 41 +++++++++++++++++++++++++++++++++++++++--
 1 file changed, 39 insertions(+), 2 deletions(-)

(limited to 'tasks')

diff --git a/tasks/mruby_build.rake b/tasks/mruby_build.rake
index 66608286d..50bed0fbe 100644
--- a/tasks/mruby_build.rake
+++ b/tasks/mruby_build.rake
@@ -80,7 +80,7 @@ module MRuby
         @git = Command::Git.new(self)
         @mrbc = Command::Mrbc.new(self)
 
-        @bins = %w(mrbc)
+        @bins = []
         @gems, @libmruby = MRuby::Gem::List.new, []
         @build_mrbtest_lib_only = false
         @cxx_abi_enabled = false
@@ -92,6 +92,8 @@ module MRuby
 
       MRuby::Build.current = MRuby.targets[@name]
       MRuby.targets[@name].instance_eval(&block)
+
+      build_mrbc_exec if name == 'host'
     end
 
     def enable_debug
@@ -119,6 +121,33 @@ module MRuby
       @cxx_abi_enabled = true
     end
 
+    def compile_as_cxx src, cxx_src, obj = nil, includes = []
+      src = File.absolute_path src
+      cxx_src = File.absolute_path cxx_src
+      obj = objfile(cxx_src) if obj.nil?
+
+      file cxx_src => [src, __FILE__] do |t|
+        File.open(t.name, 'w') do |f|
+          f.write <<EOS
+#define __STDC_CONSTANT_MACROS
+#define __STDC_LIMIT_MACROS
+
+extern "C" {
+#include "#{src}"
+}
+
+#{File.basename(src) == 'error.c'? 'mrb_int mrb_jmpbuf::jmpbuf_id = 0;' : ''}
+EOS
+        end
+      end
+
+      file obj => cxx_src do |t|
+        cxx.run t.name, t.prerequisites.first, [], ["#{MRUBY_ROOT}/src"] + includes
+      end
+
+      obj
+    end
+
     def enable_bintest
       @enable_bintest = true
     end
@@ -142,8 +171,16 @@ module MRuby
       MRUBY_ROOT
     end
 
+    def build_mrbc_exec
+      gem :core => 'mruby-bin-mrbc'
+    end
+
     def mrbcfile
-      MRuby.targets[@name].exefile("#{MRuby.targets[@name].build_dir}/bin/mrbc")
+      return @mrbcfile if @mrbcfile
+
+      mrbc_build = MRuby.targets['host']
+      gems.each { |v| mrbc_build = self if v.name == 'mruby-bin-mrbc' }
+      @mrbcfile = mrbc_build.exefile("#{mrbc_build.build_dir}/bin/mrbc")
     end
 
     def compilers
-- 
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