mkmf.rb: fix race conditions at install-ext

* lib/mkmf.rb (create_makefile): fix race conditions at install-ext.
  target files need to depend on destination directory timestamp
  files, not phony trgets.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36863 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index 367b344095..39113b5130 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -2152,8 +2152,8 @@ static: $(STATIC_LIB)#{$extout ? " install-rb" : ""}
         end
         for f in files
           dest = "#{dir}/#{File.basename(f)}"
-          mfile.print("install-rb#{sfx}: #{dest} #{timestamp_file(dir)}\n")
-          mfile.print("#{dest}: #{f}\n")
+          mfile.print("install-rb#{sfx}: #{dest}\n")
+          mfile.print("#{dest}: #{f} #{timestamp_file(dir)}\n")
           mfile.print("\t$(Q) $(#{$extout ? 'COPY' : 'INSTALL_DATA'}) #{f} $(@D#{sep})\n")
           if defined?($installed_list) and !$extout
             mfile.print("\t@echo #{dest}>>$(INSTALLED_LIST)\n")