Current the GUIDED tool path can't be override to the different path in the [BuildOptions] of DSC file. This patch fix the bug. Fixes: https://bugzilla.tianocore.org/show_bug.cgi?id=283 Cc: Liming Gao <liming.gao@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>