-i开关告诉NGDBuild忽略约束文件。
这就是我们在11.x中告诉NGDBuild的方式，然后忽略UCF并执行_XDB / .ISE位置中指定的操作。
鉴于您的设计已迁移，我怀疑迁移过程只是带有一些不应该有的设置。
对于这个方面，您可能希望提交具有技术支持的WebCase，以便我们可以查看它，以防这是一个真正的错误，我们需要针对它提交缺陷。
至于如何了解这些更改，我们始终在“开发系统参考指南”中记录我们工具的有效选项。
它可以在网站上找到：http：//www.xilinx.com/support/documentation/sw_manuals/xilinx12_1/devref.pdf
我们还将其副本部署为您的ISE安装的一部分。
它的默认位置（在Windows上）是C： Xilinx 12.1 ISE_DS ISE doc usenglish isehelp devref.pdf
-------------------------------------------这个空间故意留空
以上来自于谷歌翻译
以下为原文
The -i switch tells NGDBuild to ignore the constraints file. This was how we told NGDBuild in 11.x and prior to ignore the UCF and do what was specified in the _XDB/.ISE locations. Given that your design was migrated, I'm suspecting that the migration process simply carried some settings forward that it should not have.
For this aspect, you might want to file a WebCase with technical support so that we can look into it in case this is a real bug and we need to file a defect against it.
As to how to learn about these changes, we always document the valid options for our tools in the Development System Reference Guide. It can be found on the web at http://www.xilinx.com/support/documentation/sw_manuals/xilinx12_1/devref.pdf
We also deploy a copy of it as part of your ISE installation. The default location for it (on Windows) is C:Xilinx12.1ISE_DSISEdocusenglishisehelpdevref.pdf
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-i开关告诉NGDBuild忽略约束文件。
这就是我们在11.x中告诉NGDBuild的方式，然后忽略UCF并执行_XDB / .ISE位置中指定的操作。
鉴于您的设计已迁移，我怀疑迁移过程只是带有一些不应该有的设置。
对于这个方面，您可能希望提交具有技术支持的WebCase，以便我们可以查看它，以防这是一个真正的错误，我们需要针对它提交缺陷。
至于如何了解这些更改，我们始终在“开发系统参考指南”中记录我们工具的有效选项。
它可以在网站上找到：http：//www.xilinx.com/support/documentation/sw_manuals/xilinx12_1/devref.pdf
我们还将其副本部署为您的ISE安装的一部分。
它的默认位置（在Windows上）是C： Xilinx 12.1 ISE_DS ISE doc usenglish isehelp devref.pdf
-------------------------------------------这个空间故意留空
以上来自于谷歌翻译
以下为原文
The -i switch tells NGDBuild to ignore the constraints file. This was how we told NGDBuild in 11.x and prior to ignore the UCF and do what was specified in the _XDB/.ISE locations. Given that your design was migrated, I'm suspecting that the migration process simply carried some settings forward that it should not have.
For this aspect, you might want to file a WebCase with technical support so that we can look into it in case this is a real bug and we need to file a defect against it.
As to how to learn about these changes, we always document the valid options for our tools in the Development System Reference Guide. It can be found on the web at http://www.xilinx.com/support/documentation/sw_manuals/xilinx12_1/devref.pdf
We also deploy a copy of it as part of your ISE installation. The default location for it (on Windows) is C:Xilinx12.1ISE_DSISEdocusenglishisehelpdevref.pdf
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this space intentionally left blank
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