--- old/common/autoconf/basics.m4	2013-06-19 13:37:59.190772021 +0200
+++ new/common/autoconf/basics.m4	2013-06-19 13:37:59.090754698 +0200
@@ -359,10 +359,7 @@
     if test "x$with_sys_root" != x; then
       AC_MSG_ERROR([Cannot specify both --with-devkit and --with-sys-root at the same time])
     fi
-    if test "x$with_tools_dir" != x; then
-      AC_MSG_ERROR([Cannot specify both --with-devkit and --with-tools-dir at the same time])
-    fi
-    TOOLS_DIR=$with_devkit/bin
+    TOOLS_DIR=$TOOLS_DIR:$with_devkit/bin
     if test -d "$with_devkit/$host_alias/libc"; then
       SYS_ROOT=$with_devkit/$host_alias/libc
     elif test -d "$with_devkit/$host/sys-root"; then