From f418a0c57ff7a812ece73e300c402585a27002c4 Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 12 Dec 2015 08:06:18 +0000
Subject: add insight about parallel test-all

see also https://bugs.ruby-lang.org/projects/ruby/wiki/DeveloperHowto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53049 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 common.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'common.mk')

diff --git a/common.mk b/common.mk
index 940c477c1c..73bdaeb992 100644
--- a/common.mk
+++ b/common.mk
@@ -1085,7 +1085,7 @@ help: PHONY
 	"  gdb-ruby:        runs test.rb by ruby under gdb" \
 	"  check:           equals make test test-all" \
 	"  test:            ruby core tests" \
-	"  test-all:        all ruby tests [TESTS=<test files>]" \
+	"  test-all:        all ruby tests [TESTS=\"-j4 <test files>\"]" \
 	"  test-rubyspec:   run RubySpec test suite" \
 	"  update-rubyspec: update local copy of RubySpec" \
 	"  benchmark:       benchmark this ruby and COMPARE_RUBY." \
-- 
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