Added testing support for cross-MinGW builds.

This adds a build_config that will cross-build a Windows executable
using the MinGW cross-compiler and will also run the unit (i.e.
'rake test') using Wine.

For this to work, I made some modifications to the underlying test
scripts as well as some minor changes to a couple of the tests
themselves.

2 files changed, 22 insertions, 0 deletions

diff --git a/lib/mruby/build.rb b/lib/mruby/build.rb
index 67267ab46..66005a6df 100644
--- a/lib/mruby/build.rb
+++ b/lib/mruby/build.rb
@@ -541,6 +541,23 @@ EOS
       end
     end
 
+    def run_bintest
+      puts ">>> Bintest #{name} <<<"
+      targets = @gems.select { |v| File.directory? "#{v.dir}/bintest" }.map { |v| filename v.dir }
+      targets << filename(".") if File.directory? "./bintest"
+      mrbc = @gems["mruby-bin-mrbc"] ? exefile("#{@build_dir}/bin/mrbc") : mrbcfile
+
+      emulator = @test_runner.command
+      emulator = @test_runner.shellquote(emulator) if emulator
+
+      env = {
+        "BUILD_DIR" => @build_dir,
+        "MRBCFILE" => mrbc,
+        "EMULATOR" => @test_runner.emulator,
+      }
+      sh env, "ruby test/bintest.rb#{verbose_flag} #{targets.join ' '}"
+    end
+
     protected
 
     def create_mrbc_build; end
diff --git a/lib/mruby/build/command.rb b/lib/mruby/build/command.rb
index c93d08ea7..31a595ef0 100644
--- a/lib/mruby/build/command.rb
+++ b/lib/mruby/build/command.rb
@@ -363,6 +363,11 @@ module MRuby
       @flags = []
     end
 
+    def emulator
+      return "" unless @command
+      return [@command, *@flags].map{|c| shellquote(c)}.join(' ')
+    end
+
     def run(testbinfile)
       puts "TEST for " + @build.name
       _run runner_options, { :flags => [flags, verbose_flag].flatten.join(' '), :infile => testbinfile }