diff -Naur tk8.5.7/win/configure.in tk8.5.7-new/win/configure.in
--- tk8.5.7/win/configure.in	2009-04-15 11:11:42.000000000 -0300
+++ tk8.5.7-new/win/configure.in	2009-10-20 14:48:25.000000000 -0200
@@ -57,9 +57,9 @@
 dnl AC_CHECK_TOOL(RC, windres)
 
 if test "${GCC}" = "yes" ; then
-    AC_CHECK_PROG(AR, ar, ar)
-    AC_CHECK_PROG(RANLIB, ranlib, ranlib)
-    AC_CHECK_PROG(RC, windres, windres)
+    AC_CHECK_PROG(AR, i686-pc-mingw32-ar, i686-pc-mingw32-ar)
+    AC_CHECK_PROG(RANLIB, i686-pc-mingw32-ranlib, i686-pc-mingw32-ranlib)
+    AC_CHECK_PROG(RC, i686-pc-mingw32-windres, i686-pc-mingw32-windres)
 
     if test "${AR}" = "" ; then
 	AC_MSG_ERROR([Required archive tool 'ar' not found on PATH.])