Index: ../tools/v2/build.rb
===================================================================
--- ../tools/v2/build.rb	(リビジョン 50751)
+++ ../tools/v2/build.rb	(作業コピー)
@@ -197,6 +197,9 @@
   pkg = hTAG['NAME']
   momo_debug_log("do_rpmbuild #{hTAG['NAME']}")
 
+  spec_lock = File.open("#{pkg}.spec","w");
+  spec_lock.flock(File::LOCK_EX)
+
   Dir.chdir pkg
 
   STDOUT.flush
@@ -360,6 +363,8 @@
 ensure
   Dir.chdir ".."
 
+  spec_lock.flock(File::LOCK_UN)
+
   momo_assert { MOMO_UNDEFINED != result }
   momo_debug_log("do_rpmbuild returns #{result}")
 
@@ -877,6 +882,7 @@
     Dir.chdir '..'
     
     # rpmbuild を実行
+
     throw :exit_buildme, do_rpmbuild(hTAG, log_file)    
   end