bug#78562: Coreutils-9.7 do not build on macOS High Sierra, Version 10.13.6, because src/cksum.c: uses invalid cpu feature string for builtin

On 24/05/2025 10:29, Peter Dyballa wrote:
> 
>> Am 24.05.2025 um 01:37 schrieb Pádraig Brady <[email protected]>:
>>
>> I suspect the following will avoid the issue:
> 
> It does not:
> 
> 	/usr/bin/clang  -I. -I./lib  -Ilib -I./lib -Isrc -I./src -I/opt/local/include -mavx -mpclmul  -Wno-format-extra-args -Wno-tautological-constant-out-of-range-compare -pipe -Os -arch x86_64 -MT src/libcksum_pclmul_a-cksum_pclmul.o -MD -MP -MF src/.deps/libcksum_pclmul_a-cksum_pclmul.Tpo -c -o src/libcksum_pclmul_a-cksum_pclmul.o `test -f 'src/cksum_pclmul.c' || echo './'`src/cksum_pclmul.c
> 	src/cksum.c:190:30: error: invalid cpu feature string for builtin
> 	  bool avx512_enabled = (0 < __builtin_cpu_supports ("vpclmulqdq")
> 	                             ^                       ~~~~~~~~~~~~
> 	1 error generated.
> 	make[2]: *** [src/cksum-cksum.o] Error 1
> 
> 
> I then set GCC 14 as compiler to build (instead of Clang 17.0.6). The result is:
> 
> 	mv -f src/.deps/libcksum_avx2_a-cksum_avx2.Tpo src/.deps/libcksum_avx2_a-cksum_avx2.Po
> 	depbase=`echo src/ls-dir.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\
> 		/opt/local/bin/gcc-mp-14  -I. -I./lib  -Ilib -I./lib -Isrc -I./src -I/opt/local/include   -pipe -Os -arch x86_64 -MT src/ls-dir.o -MD -MP -MF $depbase.Tpo -c -o src/ls-dir.o src/ls-dir.c &&\
> 		mv -f $depbase.Tpo $depbase.Po
> 	<stdin>:59:2: error: instruction requires: AVX-512 ISA
> 	        vmovdqa64       lC0(%rip), %zmm0
> 	        ^

It seems like you may have a mismatch between compiler (flags)
used at configure time and build time.  These must match
so that code upsupported by your build is not enabled.
I'm surprised USE_AVX512_CRC32 is defined at all for you during your build?

thanks,
Pádraig