[openssl-users] openssl-users Digest, Vol 46, Issue 46

[Matt Caswell]

On 28/09/18 04:21, Richard Levitte wrote:
> Ah, I forgot...  we changed the requirements to compile that code,
> from this:
> 
>     # if defined(__GNUC__) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
> 
> to this:
> 
>     # if defined(__SIZEOF_INT128__) && __SIZEOF_INT128__==16
> 
> the latter denotes official support while the former was more of a
> hack, and turned out to be unreliable...
> 
> There's a bit of discussion on that here:
> 
>     https://github.com/openssl/openssl/issues/6327
> 
> So it turns out that your gcc may have the 128-bit extension, but
> doesn't declare official support for it.

As per the suggestion in that issue, if you have absolute faith that
your compiler does support 128 bit ints then you can pass
"-D__SIZEOF_INT128__=16" to config.

Matt


> 
> Cheers,
> Richard
> 
> In message <F4B438E4-C1BC-4A88-A1F2-5A6AAF4627FC at digicert.com> on Wed, 26 Sep 2018 02:47:51 +0000, Vinay Mummadi <vinay.mummadi at digicert.com> said:
> 
>> Hi Richard,
>>
>>     CC = /u/build/build1/engtools/linux/2.6.18-8.el5/x86_64/gcc/versions/4.3.2/bin/gcc
>>             CXX = /u/build/build1/engtools/linux/2.6.18-8.el5/x86_64/gcc/versions/4.3.2/bin/g++
>>
>> I was using these for openssl 1.1.0h and it compiled with this option " enable-ec_nistp_64_gcc_128"
>>
>> Any other possibility, Please suggest.
> ...
>>     Message: 1
>>     Date: Mon, 24 Sep 2018 15:42:48 +0200 (CEST)
>>     From: Richard Levitte <levitte at openssl.org>
>>     To: openssl-users at openssl.org
>>     Subject: Re: [openssl-users] Build issues with openssl-1.1.1
>>     Message-ID: <20180924.154248.2078713038705571598.levitte at openssl.org>
>>     Content-Type: Text/Plain; charset=us-ascii
>>     
>>     I'm noticing these from the dump:
>>     
>>         Recorded environment:
>>         
>>         ...
>>             CC = /u/build/build1/engtools/linux/2.6.18-8.el5/x86_64/gcc/versions/4.3.2/bin/gcc
>>             CXX = /u/build/build1/engtools/linux/2.6.18-8.el5/x86_64/gcc/versions/4.3.2/bin/g++
>>     
>>     Could it be that those compilers don't have support for 128 bit
>>     integers on your platform?  In that case, you should remove
>>     'enable-ec_nistp_64_gcc_128' from your configuration command.
>>     
>>     Cheers,
>>     Richard
> ...
>