Fix broken msvc build

fb1c4b3b · Takashi Sawanaka · 2eefbfed · fb1c4b3b
Commit fb1c4b3b authored Jul 23, 2016 by Takashi Sawanaka
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Showing with 7 additions and 3 deletions

build_config.rb build_config.rb +7 -3

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--- a/build_config.rb
+++ b/build_config.rb
@@ -123,9 +123,13 @@ MRuby::Build.new('test') do |conf|
 end
 MRuby::Build.new('bench') do |conf|
-  toolchain :gcc
+  # Gets set by the VS command prompts.
+  if ENV['VisualStudioVersion'] || ENV['VSINSTALLDIR']
-  conf.cc.flags << '-O3'
+    toolchain :visualcpp
+  else
+    toolchain :gcc
+    conf.cc.flags << '-O3'
+  end
  conf.gembox 'default'
 end