Add generator script to dependency so that it will regenerate C codes when it's modified.

mrblib/mrblib.rake

@@ -6,8 +6,8 @@ MRuby.each_target do
   self.libmruby << objfile("#{current_build_dir}/mrblib")
 
   file objfile("#{current_build_dir}/mrblib") => "#{current_build_dir}/mrblib.c"
-  file "#{current_build_dir}/mrblib.c" => [mrbcfile] + Dir.glob("#{current_dir}/*.rb").sort do |t|
-    mrbc_, *rbfiles = t.prerequisites
+  file "#{current_build_dir}/mrblib.c" => [mrbcfile, __FILE__] + Dir.glob("#{current_dir}/*.rb").sort do |t|
+    _, _, *rbfiles = t.prerequisites
     FileUtils.mkdir_p File.dirname(t.name)
     open(t.name, 'w') do |f|
       _pp "GEN", "*.rb", "#{t.name.relative_path}"

src/mruby_core.rake

@@ -13,7 +13,7 @@ MRuby.each_target do
     cxx_abi_dependency = %w(codegen error vm)
     cxx_abi_objs = cxx_abi_dependency.map { |v|
       src = "#{current_build_dir}/#{v}.cxx"
-      file src => "#{current_dir}/#{v}.c" do |t|
+      file src => ["#{current_dir}/#{v}.c", __FILE__] do |t|
         File.open(t.name, 'w') do |f|
           f.write <<EOS
 #define __STDC_CONSTANT_MACROS
@@ -37,7 +37,7 @@ EOS
     }
     cxx_abi_objs << objfile("#{current_build_dir}/y.tab")
 
-    file "#{current_build_dir}/y.tab.cxx" => "#{current_build_dir}/y.tab.c" do |t|
+    file "#{current_build_dir}/y.tab.cxx" => ["#{current_build_dir}/y.tab.c", __FILE__] do |t|
       File.open(t.name, 'w') do |f|
         f.write <<EOS
 #define __STDC_CONSTANT_MACROS

tasks/libmruby.rake

@@ -1,7 +1,10 @@
 MRuby.each_target do
   file libfile("#{build_dir}/lib/libmruby") => libmruby.flatten do |t|
     archiver.run t.name, t.prerequisites
-    open("#{build_dir}/lib/libmruby.flags.mak", 'w') do |f|
+  end
+
+  file "#{build_dir}/lib/libmruby.flags.mak" => [__FILE__, libfile("#{build_dir}/lib/libmruby")] do |t|
+    open(t.name, 'w') do |f|
       f.puts "MRUBY_CFLAGS = #{cc.all_flags.gsub('"', '\\"')}"
 
       gem_flags = gems.map { |g| g.linker.flags }
@@ -15,4 +18,5 @@ MRuby.each_target do
       f.puts "MRUBY_LIBS = #{linker.option_library % 'mruby'} #{linker.library_flags(gem_libraries).gsub('"', '\\"')}"
     end
   end
+  task :all => "#{build_dir}/lib/libmruby.flags.mak"
 end

tasks/mrbgem_spec.rake

@@ -124,7 +124,7 @@ module MRuby
 
       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].flatten do |t|
+        file "#{build_dir}/gem_init.c" => [build.mrbcfile, __FILE__] + [rbfiles].flatten do |t|
           FileUtils.mkdir_p build_dir
           generate_gem_init("#{build_dir}/gem_init.c")
         end

tasks/mrbgems.rake

@@ -7,7 +7,7 @@ MRuby.each_target do
     # loader all gems
     self.libmruby << objfile("#{build_dir}/mrbgems/gem_init")
     file objfile("#{build_dir}/mrbgems/gem_init") => ["#{build_dir}/mrbgems/gem_init.c", "#{build_dir}/LEGAL"]
-    file "#{build_dir}/mrbgems/gem_init.c" => [MRUBY_CONFIG] do |t|
+    file "#{build_dir}/mrbgems/gem_init.c" => [MRUBY_CONFIG, __FILE__] do |t|
       FileUtils.mkdir_p "#{build_dir}/mrbgems"
       open(t.name, 'w') do |f|
         f.puts %Q[/*]
@@ -40,7 +40,7 @@ MRuby.each_target do
   end
 
   # legal documents
-  file "#{build_dir}/LEGAL" => [MRUBY_CONFIG] do |t|
+  file "#{build_dir}/LEGAL" => [MRUBY_CONFIG, __FILE__] do |t|
     open(t.name, 'w+') do |f|
      f.puts <<LEGAL
 Copyright (c) #{Time.now.year} mruby developers

tasks/mrbgems_test.rake

@@ -10,7 +10,7 @@ MRuby.each_target do
     test_rbobj = g.test_rbireps.ext(exts.object)
 
     file test_rbobj => g.test_rbireps
-    file g.test_rbireps => [g.test_rbfiles].flatten + [g.build.mrbcfile] do |t|
+    file g.test_rbireps => [g.test_rbfiles].flatten + [g.build.mrbcfile, __FILE__] do |t|
       open(t.name, 'w') do |f|
         g.print_gem_test_header(f)
         test_preload = g.test_preload and [g.dir, MRUBY_ROOT].map {|dir|
@@ -117,7 +117,7 @@ MRuby.each_target do
 
   no_mrb_open_test_lib = no_mrb_open_test.ext(exts.object)
   file no_mrb_open_test_lib => "#{no_mrb_open_test}.c"
-  file "#{no_mrb_open_test}.c" => no_mrb_open_test_rbfiles + [MRUBY_CONFIG] do |t|
+  file "#{no_mrb_open_test}.c" => no_mrb_open_test_rbfiles + [MRUBY_CONFIG, __FILE__] do |t|
     open(t.name, 'w') do |f|
       f.puts %Q[/*]
       f.puts %Q[ * This file contains a test code for following gems:]

test/mrbtest.rake

@@ -31,15 +31,15 @@ MRuby.each_target do
   end
 
   file ass_lib => ass_c
-  file ass_c => "#{current_dir}/assert.rb" do |t|
+  file ass_c => ["#{current_dir}/assert.rb", __FILE__] do |t|
     FileUtils.mkdir_p File.dirname t.name
     open(t.name, 'w') do |f|
-      mrbc.run f, [t.prerequisites], 'mrbtest_assert_irep'
+      mrbc.run f, [t.prerequisites.first], 'mrbtest_assert_irep'
     end
   end
 
   file mlib => clib
-  file clib => [mrbcfile, init] + mrbs do |t|
+  file clib => [mrbcfile, init, __FILE__] + mrbs do |t|
     _pp "GEN", "*.rb", "#{clib.relative_path}"
     FileUtils.mkdir_p File.dirname(clib)
     open(clib, 'w') do |f|