3 files changed, 7 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog
index b9e07c5514..cbd952183f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat Feb  6 01:14:54 2010  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* ext/purelib.rb, common.mk: to simulate ruby command more precisely,
+	  remove "." from $: of virtual environment for build and test.
+
 Sat Feb  6 00:02:31 2010  Tanaka Akira  <akr@fsij.org>
 
 	* random.c (fill_random_seed): don't use O_NOFOLLOW because
diff --git a/common.mk b/common.mk
index 1bce4cf9cd..559b4908ee 100644
--- a/common.mk
+++ b/common.mk
@@ -123,7 +123,7 @@ TESTRUN_SCRIPT = $(srcdir)/test.rb
 
 BOOTSTRAPRUBY = $(BASERUBY)
 
-COMPILE_PRELUDE = $(MINIRUBY) -I$(srcdir) -I. -rrbconfig $(srcdir)/tool/compile_prelude.rb
+COMPILE_PRELUDE = $(MINIRUBY) -I$(srcdir) -I. -r./rbconfig $(srcdir)/tool/compile_prelude.rb
 
 all: main docs
 
diff --git a/ext/purelib.rb b/ext/purelib.rb
index 6418fd618d..cc1a00bdb2 100644
--- a/ext/purelib.rb
+++ b/ext/purelib.rb
@@ -6,7 +6,7 @@ $:.each_with_index {|path, index|
   end
 }
 if nul
-  removed, $:[nul..-1] = $:[nul..-1], ["."]
+  removed, $:[nul..-1] = $:[nul..-1], []
   if defined?(Gem::QuickLoader)
     removed.each do |path|
       # replaces a fake rubygems by gem_prelude.rb with an alternative path