error:identifier "__builtin_ia32_rndscaless_round" is undefined

[swordzlim]

My environment is that:
OS: ubuntu 20.04.1
cuda: 11.5
gcc: 9.4.0
However, I meet the problem with AVX-512 when I run "make":
`sh-5.0$ make
nvcc -O3 -w -arch=compute_61 -code=sm_86 -gencode=arch=compute_61,code=sm_86 -Xcompiler -fopenmp main.cu -o test -I/usr/local/cuda-11.5/include -L/usr/local/cuda-11.5/lib64 -lcudart -lcusparse -D VALUE_TYPE=double
/usr/lib/gcc/x86_64-linux-gnu/9/include/avx512fintrin.h(9146): error: identifier "__builtin_ia32_rndscaless_round" is undefined

/usr/lib/gcc/x86_64-linux-gnu/9/include/avx512fintrin.h(9155): error: identifier "__builtin_ia32_rndscalesd_round" is undefined

/usr/lib/gcc/x86_64-linux-gnu/9/include/avx512fintrin.h(14797): error: identifier "__builtin_ia32_rndscaless_round" is undefined

/usr/lib/gcc/x86_64-linux-gnu/9/include/avx512fintrin.h(14806): error: identifier "__builtin_ia32_rndscalesd_round" is undefined

/usr/lib/gcc/x86_64-linux-gnu/9/include/avx512dqintrin.h(1365): error: identifier "__builtin_ia32_fpclassss" is undefined

/usr/lib/gcc/x86_64-linux-gnu/9/include/avx512dqintrin.h(1372): error: identifier "__builtin_ia32_fpclasssd" is undefined`

[VeritasFutureKF]

I met the same errors.

[swordzlim]

This error is caused by cuda enviromnemt. You can use Docker to deal with this problem.

[doraJmon]

I made two changes in Makefile according to Deepseek reply:

• add -ccbin gcc-8 after NVCC_FLAGS,
• add -lm -lstdc++ after LIBS

, and the compilation completed without error.

I wonder if this is the right solution.