From 2b2ef5cfced1c06ceb9920afd6b24255510d4242 Mon Sep 17 00:00:00 2001
From: akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 13 Nov 2011 03:47:07 +0000
Subject: * ext/dbm/extconf.rb: rollback $libs and $defs when db detection is  
 failed.  It fixes -lgdbm -lqdbm when the system has qdbm and gdbm   without
 gdbm_compat.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33731 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/dbm/extconf.rb | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'ext/dbm')

diff --git a/ext/dbm/extconf.rb b/ext/dbm/extconf.rb
index b46688aa75..f8139495d3 100644
--- a/ext/dbm/extconf.rb
+++ b/ext/dbm/extconf.rb
@@ -29,6 +29,17 @@ headers.found = []
 headers.defs = nil
 
 def headers.db_check(db)
+  old_libs = $libs
+  old_defs = $defs
+  result = db_check2(db)
+  if !result
+    $libs = old_libs
+    $defs = old_defs
+  end
+  result
+end
+
+def headers.db_check2(db)
   hsearch = nil
 
   case db
-- 
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