Re: Openssl fails build on Mac OS X 10.11

Scott Hannahs via Fink-users <[email protected]> Sat, 2 Oct 2021 23:16:18 -0400
Newsgroups	gmane.os.apple.fink.general
Message-ID	<[email protected]>

> On Oct 2, 2021, at 9:55 PM, Hanspeter Niederstrasser <[email protected]> wrote:
> 
>>> See https://github.com/fink/fink-distributions/issues/858 <https://github.com/fink/fink-distributions/issues/858> <https://github.com/fink/fink-distributions/issues/858 <https://github.com/fink/fink-distributions/issues/858>>
>>> 
>>> Hanspeter
>> I see home-brew has run into the same problem.  This seems to be a problem on
>> OS 10.14		Xcode 9
>> OS 10.13		Xcode 10
>> OS 10.11		Xcode 8.2.1
>> But works on
>> OS 10.14		Xcode 10
>> And more recent?
>> I did just now find an interesting comment with a workaround requiring an external assembler.
>> https://giters.com/openssl/openssl/issues/14668 <https://giters.com/openssl/openssl/issues/14668> <https://giters.com/openssl/openssl/issues/14668 <https://giters.com/openssl/openssl/issues/14668>>
>> Sorry for that. The reason is that clang-6 does not enable proper -march flags by default for assembly modules (this file requires avx512ifma, avx512dq, avx512vl, avx512f). This is not true for newer versions - clang-7 and further work ok.
>> Seems like currently in OpenSSL it is not encouraged to set specific flags for specific archs with file based granularity, so probably the best solution would be to increase minimum required clang version for this file to 7.0. I'll make a PR with it.
>> For older clang versions users who want to get such optimization, we have a note in the OPENSSL_ia32cap <https://www.openssl.org/docs/manmaster/man3/OPENSSL_ia32cap.html <https://www.openssl.org/docs/manmaster/man3/OPENSSL_ia32cap.html>> with the workaround - use a wrapper that forces to use external assembler.
>> Please let me know if you have any concerns about the proposed fix.
> 
> What happens if you go into the build directory and try to directly run the compiler command that failed, but removing the `-arch x86_64` bit?


Same error with out the "-arch x86_64”

sudo cc -fPIC -O3 -Wall -DL_ENDIAN -DOPENSSL_PIC -DOPENSSLDIR="\"/sw/etc/ssl\"" -DENGINESDIR="\"/sw/lib/engines-3\"" -DMODULESDIR="\"/sw/lib/ossl-modules\"" -D_REENTRANT -DOPENSSL_BUILDING_OPENSSL -DZLIB -DZLIB_SHARED -DNDEBUG -I/sw/include -c -o crypto/bn/libcrypto-lib-rsaz-avx512.o crypto/bn/rsaz-avx512.s
crypto/bn/rsaz-avx512.s:36:2: error: instruction requires: AVX-512 ISA AVX-512 VL ISA
 vpxord %ymm0,%ymm0,%ymm0
 ^
<many more>
% arch
i386

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