From 0ce6372dc1b24ae821689d0999a058978484a487 Mon Sep 17 00:00:00 2001
From: aamine <aamine@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 15 Dec 2004 19:02:42 +0000
Subject: * ext/ripper/extconf.rb: bison is not needed if ripper.c exists.
 [ruby-dev:25191]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@7572 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/ripper/extconf.rb | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'ext/ripper/extconf.rb')

diff --git a/ext/ripper/extconf.rb b/ext/ripper/extconf.rb
index f1716b84c0..fd9370c337 100644
--- a/ext/ripper/extconf.rb
+++ b/ext/ripper/extconf.rb
@@ -5,8 +5,10 @@ require 'rbconfig'
 
 def main
   unless have_command('bison')
-    $stderr.puts 'Ripper requires bison; abort'
-    exit 1
+    unless File.exist?('ripper.c') or File.exist?("#{$srcdir}/ripper.c")
+      $stderr.puts 'missing bison; abort'
+      exit 1
+    end
   end
   $objs = %w(ripper.o)
   $cleanfiles.concat %w(ripper.y ripper.c ripper.E ripper.output eventids1.c ids1 ids2)
-- 
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