CUDA compiler warning about unrecognized GCC pragma

Question

There is some C++ code in a CUDA file that uses this pragma:

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-result"
    void foobar()
    {
        // some code
    }
#pragma GCC diagnostic pop

When this CUDA file is compiled using CUDA 5.5 nvcc compiler, the host compiler stage is fine, but the device compiler stage produces this warning:

foobar.cu(420): warning: unrecognized GCC pragma

It looks like the CUDA compiler understands that this is a GCC pragma. I have no idea why it is trying to understand all GCC pragmas. Is there any method to fix this warning or make this warning go away?

Update: Please note that passing the -Xcudafe "--diag_suppress=unrecognized_pragma" option to the nvcc compiler does not seem to have any effect.

possible duplicate of [How to disable compiler warnings with nvcc](http://stackoverflow.com/questions/14831051/how-to-disable-compiler-warnings-with-nvcc) — rubenvb, Apr 01 '14 at 07:52

score 2 · Accepted Answer · answered Apr 08 '14 at 06:42

2

Try this one:

-Xcudafe "--diag_suppress=unrecognized_gcc_pragma"

answered Apr 08 '14 at 06:42

6EQUJ5

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Thanks! That worked. May I know where I should look for such flags? In case, I need to ignore a different warning in the future :) – Ashwin Nanjappa Apr 09 '14 at 02:52
Anyone using cmake can add: `set(CMAKE_CUDA_FLAGS_RELEASE "-Xcudafe \"--diag_suppress=unrecognized_gcc_pragma\"")` to their relevant `CMakeLists.txt` file – schuess Jul 12 '22 at 18:03

score 1 · Answer 2 · edited May 23 '17 at 12:28

1

As shown in the duplicate question, you need to pass the following flag to nvcc:

-Xcudafe "--diag_suppress=unrecognized_pragma"

edited May 23 '17 at 12:28

Community

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answered Apr 01 '14 at 07:53

rubenvb

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Thanks for pointing out this compiler option. Surprisingly, I'm still getting the warning after I added this. – Ashwin Nanjappa Apr 01 '14 at 08:03
1

I found that I needed to specify the number explicitly, as in `"--diag_suppress=1675"` – misnomer Feb 01 '23 at 17:26

CUDA compiler warning about unrecognized GCC pragma

2 Answers2