I can't build glibc on computer that does not support evex 512 instruction with default configuration

[zcj5918]

I just use configure and make -j, yet cannot build gblic 2.37, I think the reason is my E5-2678v3 CPU does not support avx512 instruction set. Can I disable avx512 instruction set before compiling?

When I use make, I received these:

../sysdeps/x86_64/multiarch/memcmpeq-evex.S: Assembler messages:
../sysdeps/x86_64/multiarch/memcmpeq-evex.S:115: 错误： no such instruction: vpcmpneqb (%rdi),%zmm18,%k1{%k2}' ../sysdeps/x86_64/multiarch/memcmpeq-evex.S:123: 错误： no such instruction: vpcmpneqb -(64 * 1)(%rdi,%rdx),%zmm17,%k1'
../sysdeps/x86_64/multiarch/memcmpeq-evex.S:136: 错误： no such instruction: vpcmpneqb (%rdi),%zmm17,%k1' ../sysdeps/x86_64/multiarch/memcmpeq-evex.S:146: 错误： no such instruction: vpcmpneqb 64(%rdi),%zmm18,%k1'
../sysdeps/x86_64/multiarch/memcmpeq-evex.S:157: 错误： no such instruction: vpcmpneqb (64 * 2)(%rdi),%zmm19,%k1' ../sysdeps/x86_64/multiarch/memcmpeq-evex.S:163: 错误： no such instruction: vpcmpneqb (64 * 3)(%rdi),%zmm20,%k1'
../sysdeps/x86_64/multiarch/strchr-evex-base.S: Assembler messages:
../sysdeps/x86_64/multiarch/strchr-evex-base.S:64: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1' ../sysdeps/x86_64/multiarch/strchr-evex-base.S:124: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1'
../sysdeps/x86_64/multiarch/strchr-evex-base.S:155: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1' ../sysdeps/x86_64/multiarch/strchr-evex-base.S:171: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1'
../sysdeps/x86_64/multiarch/strchr-evex-base.S:182: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1' ../sysdeps/x86_64/multiarch/strchr-evex-base.S:193: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1'
../sysdeps/x86_64/multiarch/strchr-evex-base.S:214: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1' ../sysdeps/x86_64/multiarch/strchr-evex-base.S:215: 错误： no such instruction: vpcmpneqb %zmm18,%zmm16,%k2'
../sysdeps/x86_64/multiarch/strchr-evex-base.S:219: 错误： no such instruction: vpcmpneqb %zmm19,%zmm16,%k3{%k1}' ../sysdeps/x86_64/multiarch/strchr-evex-base.S:220: 错误： no such instruction: vpcmpneqb %zmm20,%zmm16,%k4{%k2}'
../sysdeps/x86_64/multiarch/memchr-evex-base.S: Assembler messages:
../sysdeps/x86_64/multiarch/memchr-evex-base.S:229: 错误： no such instruction: vpcmpneqb (64 * 4)(%rdi),%zmm17,%k1' ../sysdeps/x86_64/multiarch/memchr-evex-base.S: Assembler messages: ../sysdeps/x86_64/multiarch/memchr-evex-base.S:229: 错误： no such instruction: vpcmpneqb (64 * 4)(%rdi),%zmm17,%k1'
../sysdeps/x86_64/multiarch/strchr-evex-base.S: Assembler messages:
../sysdeps/x86_64/multiarch/strchr-evex-base.S:64: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1' ../sysdeps/x86_64/multiarch/strchr-evex-base.S:124: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1'
../sysdeps/x86_64/multiarch/strchr-evex-base.S:155: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1' ../sysdeps/x86_64/multiarch/strchr-evex-base.S:171: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1'
../sysdeps/x86_64/multiarch/strchr-evex-base.S:182: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1' ../sysdeps/x86_64/multiarch/strchr-evex-base.S:193: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1'
../sysdeps/x86_64/multiarch/strchr-evex-base.S:214: 错误： no such instruction: vpcmpneqb %zmm17,%zmm16,%k1' ../sysdeps/x86_64/multiarch/strchr-evex-base.S:215: 错误： no such instruction: vpcmpneqb %zmm18,%zmm16,%k2'
../sysdeps/x86_64/multiarch/strchr-evex-base.S:219: 错误： no such instruction: vpcmpneqb %zmm19,%zmm16,%k3{%k1}' ../sysdeps/x86_64/multiarch/strchr-evex-base.S:220: 错误： no such instruction: vpcmpneqb %zmm20,%zmm16,%k4{%k2}'

My Environment:
g++ 7+
Ubuntu 16.04.7 LTS E5-2678V3 X 2 nvidia 2080Ti x2

From what I know vpcmpneqb is based on avx512 set, can anyone else kindly tell me how to disable avx512 before compiling?

[Giorgi Banetishvili]

Hello. I know your comment too old, but I had same issue when working on old CentOS 7. I've upgraded GNU binutils (This contains new version of GNU Assembler) by compiling from it's source and it worked.

[Khem Raj]

try to run configure with --disable-avx512