[Bug 2032624] Re: mumax3 test suite fails against glibc 2.38

[Mitchell Dzurick]

Ah I posted my comment right after your ginggs. Thanks for the pointer!
You're right, on my system cuda-gcc just points to gcc-12

$ ll $(which /usr/bin/cuda-gcc)
lrwxrwxrwx 1 root root 6 Aug 23 14:17 /usr/bin/cuda-gcc -> gcc-12*

I tried using gcc-13 instead as I would hope that version would see
these new types, but I'm still seeing __Float32x4_t undefined, in
addition to some new types being undefined

nvcc -std=c++11 -ccbin=/usr/bin/g++-13 --allow-unsupported-compiler --compiler-options -Werror --compiler-options -Wall -Xptxas -O3 -ptx -arch=compute_50 -code=sm_50 copypadmul2.cu -o copypadmul2_50.ptx
...
/usr/include/stdlib.h(147): error: identifier "_Float64" is undefined
/usr/include/stdlib.h(153): error: identifier "_Float128" is undefined
/usr/include/stdlib.h(159): error: identifier "_Float32x" is undefined
/usr/include/stdlib.h(165): error: identifier "_Float64x" is undefined
...


Also another note, these particular CUDA code snippets don't really need these types, so finding a way to not include them will work (maybe patching libc6-dev to include another preprocessor directive) but I think ultimately that's a bad idea because someone could want a .cu file that uses both arm SIMD extensions in addition to the CUDA code.

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https://bugs.launchpad.net/bugs/2032624

Title:
  mumax3 test suite fails against glibc 2.38

Status in glibc package in Ubuntu:
  New
Status in mumax3 package in Ubuntu:
  New

Bug description:
  The autopkgtests fail with the following error:

  921s nvcc -std=c++03 -ccbin=/usr/bin/cuda-gcc --compiler-options -Werror --compiler-options -Wall -Xptxas -O3 -ptx -arch=compute_50 -code=sm_50 copypadmul2.cu -o copypadmul2_50.ptx
  922s /usr/include/aarch64-linux-gnu/bits/math-vector.h(30): error: identifier "__Float32x4_t" is undefined
  922s 
  922s /usr/include/aarch64-linux-gnu/bits/math-vector.h(31): error: identifier "__Float64x2_t" is undefined
  922s 
  922s /usr/include/aarch64-linux-gnu/bits/math-vector.h(40): error: identifier "__SVFloat32_t" is undefined
  922s 
  922s /usr/include/aarch64-linux-gnu/bits/math-vector.h(41): error: identifier "__SVFloat64_t" is undefined
  922s 
  922s /usr/include/aarch64-linux-gnu/bits/math-vector.h(42): error: identifier "__SVBool_t" is undefined

  Marking as critical as this blocks the glibc transition.

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