--- a/common/autoconf/toolchain_windows.m4	Wed Dec 05 10:12:14 2012 +0100
+++ b/common/autoconf/toolchain_windows.m4	Wed Dec 05 16:35:25 2012 +0100
@@ -48,7 +48,12 @@
     METHOD="$2"
     BASIC_WINDOWS_REWRITE_AS_UNIX_PATH(WIN_SDK_BASE)
     if test -d "$WIN_SDK_BASE"; then
-      if test -f "$WIN_SDK_BASE/SetEnv.Cmd"; then
+      # There have been cases of partial or broken SDK installations. A missing
+      # lib dir is not going to work.
+      if test ! -d "$WIN_SDK_BASE/../lib"; then
+        AC_MSG_NOTICE([Found Windows SDK installation at $WIN_SDK_BASE using $METHOD])
+        AC_MSG_NOTICE([Warning: Installation is broken, lib dir is missing. Ignoring])
+      elif test -f "$WIN_SDK_BASE/SetEnv.Cmd"; then
         AC_MSG_NOTICE([Found Windows SDK installation at $WIN_SDK_BASE using $METHOD])
         VS_ENV_CMD="$WIN_SDK_BASE/SetEnv.Cmd"
         if test "x$OPENJDK_TARGET_CPU_BITS" = x32; then