1 files changed, 2 insertions, 1 deletions
diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index 0352685f89..fccef4b5ec 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -1940,7 +1940,7 @@ preload = #{defined?($preload) && $preload ? $preload.join(' ') : ''}
       name = name.gsub(/\$\((#{pat.join("|")})\)/) {$&+target_prefix}
     end
     name = name.gsub(/(\$[({]|[})])|(\/+)|[^-.\w]+/) {$1 ? "" : $2 ? ".-." : "_"}
-    "./.#{name}.time"
+    "$(TIMESTAMP_DIR)/.#{name}.time"
   end
   # :startdoc:
 
@@ -2192,6 +2192,7 @@ DLLIB = #{dllib}
 EXTSTATIC = #{$static || ""}
 STATIC_LIB = #{staticlib unless $static.nil?}
 #{!$extout && defined?($installed_list) ? "INSTALLED_LIST = #{$installed_list}\n" : ""}
+TIMESTAMP_DIR = #{$extout ? '$(extout)/.timestamp' : '.'}
 " #"
     # TODO: fixme
     install_dirs.each {|d| mfile.print("%-14s= %s\n" % d) if /^[[:upper:]]/ =~ d[0]}