NVCC，与-Xcompiler的奇怪交互 [英] NVCC, strange interaction with -Xcompiler

问题描述

我试图构建Magma，我遇到的问题，我确信我没有遇到使用早期版本的CUDA。 （我现在使用6.5）。发生什么是makefile生成以下命令：

I'm trying to build Magma and I'm running into problems which I'm pretty sure I didn't run into when using earlier versions of CUDA. (I'm using 6.5 now). What happens is that the makefile generates the following command:

nvcc -fPIC -O3 -DADD_ -Xcompiler -fno-strict-aliasing  -gencode arch=compute_30,code=sm_30 -gencode arch=compute_35,code=sm_35 -gencode arch=compute_35,code=compute_35 -I/opt/cuda/include -I../include -I../control -I../sparse-iter/include -c zgemv_conjv.cu -o zgemv_conjv.o
nvcc fatal   : Unknown option 'fPIC'

Googling显示-fPIC只能与-Xcompiler一起使用，因为它不是nvcc选项。但是你可以看到我在我的nvcc命令中有-Xcompiler。

Googling shows that -fPIC should be used only with -Xcompiler because it's not an nvcc option. But as you can see I do have -Xcompiler in my nvcc command.

我尝试将-fPIC放在-Xcompiler后面，如下所示：

I tried putting -fPIC behind -Xcompiler like this:

nvcc -O3 -DADD_ -Xcompiler -fPIC -fno-strict-aliasing  -gencode arch=compute_30,code=sm_30 -gencode arch=compute_35,code=sm_35 -gencode arch=compute_35,code=compute_35 -I/opt/cuda/include -I../include -I../control -I../sparse-iter/include -c zgemv_conjv.cu -o zgemv_conjv.o
nvcc fatal   : Unknown option 'fno-strict-aliasing'

在下一个非nvcc选项失败，即使它在-Xcompiler后面。这是什么工作的：

It fails on the next non-nvcc option, even though it is behind -Xcompiler. What works is this:

nvcc -O3 -DADD_ -Xcompiler -fno-strict-aliasing -Xcompiler -fPIC -gencode arch=compute_30,code=sm_30 -gencode arch=compute_35,code=sm_35 -gencode arch=compute_35,code=compute_35 -I/opt/cuda/include -I../include -I../control -I../sparse-iter/include -c zgemv_conjv.cu -o zgemv_conjv.o

我在其中复制了-Xcompiler switch。
有人知道这是否是预期的行为？我找不到任何参考文献或文档，我很确定它没有使用像以前的CUDA版本那样工作。

Where I have duplicated -Xcompiler switch. Does anyone know if this is the intended behaviour? I couldn't find any reference or documentaion regarding it, and I'm pretty sure it didn't use to work like that in previous versions of CUDA. Could it be a bug?

推荐答案

根据这，你必须用逗号分隔不同的-Xcompiler子选项，为每个选项使用一个单独的-Xcompile，就像你在上一次尝试。看起来这是想要的。

According to this, you have to separate your different -Xcompiler sub-options with a comma or you have to use for each option a separate -Xcompile, like you did in your last try. It looks like this is intended.

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