Add forgotten `mkdir_p`s.

mrbgems/mruby-compiler/mrbgem.rake

@@ -27,6 +27,7 @@ MRuby::Gem::Specification.new 'mruby-compiler' do |spec|
 
   # Parser
   file "#{current_build_dir}/core/y.tab.c" => ["#{current_dir}/core/parse.y"] do |t|
+    FileUtils.mkdir_p File.dirname t.name
     yacc.run t.name, t.prerequisites.first
   end
 

tasks/libmruby.rake

@@ -4,6 +4,7 @@ MRuby.each_target do
   end
 
   file "#{build_dir}/lib/libmruby.flags.mak" => [__FILE__, libfile("#{build_dir}/lib/libmruby")] do |t|
+    FileUtils.mkdir_p File.dirname t.name
     open(t.name, 'w') do |f|
       f.puts "MRUBY_CFLAGS = #{cc.all_flags}"
 

tasks/mrbgems.rake

@@ -53,6 +53,7 @@ MRuby.each_target do
 
   # legal documents
   file "#{build_dir}/LEGAL" => [MRUBY_CONFIG, __FILE__] do |t|
+    FileUtils.mkdir_p File.dirname t.name
     open(t.name, 'w+') do |f|
      f.puts <<LEGAL
 Copyright (c) #{Time.now.year} mruby developers