This is a discussion on Re: OpenSSL compile flags - openssh ; Whoops, sorry--my bad. I'll repost it over there. Iain Morgan wrote: >Perhaps you meant to send this to one of the OpenSSL mailing lists _not_ >OpenSSH? > >On Tue Jan 3 08:19:27 2006, Ryan B. Lynch wrote: > > >>When ...
Whoops, sorry--my bad. I'll repost it over there.
Iain Morgan wrote:
>Perhaps you meant to send this to one of the OpenSSL mailing lists _not_
>On Tue Jan 3 08:19:27 2006, Ryan B. Lynch wrote:
>>When building OpenSSL version 0.9.7i (and all prior versions that I've
>>seen) on Linux, the compiler flags passed to 'gcc' include:
>> "-O3 -fomit-frame-pointer -mcpu=pentium"
>>This occurs even when the output of `uname -m` and `arch` are "i486". I
>>have a few machines with hacked 'uname' and 'arch' commands that will
>>report "i486" even when the real arch is "i686", for use in compiling
>>binaries for other i486 systems. Looking at the 'config' and
>>'Configure' scripts, it appears that the arch value is guessed based on
>>'uname', 'arch', and 'cat /proc/cpuinfo', in different cases. I guess
>>I'm running into a situation where the configure script is looking at
>>"/proc/cpuinfo", which I can't do a quick-and-easy hack to give false data.
>>Is there an option that I'm missing to pass a particular arch value to
>>compile OpenSSL for? Right now, I'm working around this by 'sed'ing the
>>above-mentioned string out of the CCFLAGS variable in the Makefile and
>>replacing it with "-O2 -march=i586 -pipe". Is this not proper, or
>>should it work OK? (It seems to work fine, in running it, but there's a
>>lot of things I wouldn't know about it.)
>>Also, as a side-note, most of the literature I've seen regarding 'gcc'
>>says that the "-mcpu=" flag is deprecated, and that "-march=" should be
>>used instead. Is there a reason why OpenSSL uses "-mcpu="?
>>Thanks for the time and help, here--OpenSSL and OpenSSH are wonderful
>>tools, and I appreciate all of the effort that goes into them.
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