[openssl-dev] Building VC-WIN32 with VS2012 and above breaks older CPU compatability

[Blumenthal, Uri - 0553 - MITLL]

If you want to dedicate a target to /arch:ia32, I can’t object or
complain. VC-WIN32-XP sounds like a good choice for that.
--
Regards,
Uri Blumenthal




On 8/26/16, 17:27, "openssl-dev on behalf of Scott Ware"
<openssl-dev-bounces at openssl.org on behalf of wsware at gmail.com> wrote:

>On Fri, Aug 26, 2016 at 5:11 PM, Blumenthal, Uri - 0553 - MITLL
><uri at ll.mit.edu> wrote:
>> On 8/26/16, 17:04, "openssl-dev on behalf of Andy Polyakov"
>> <openssl-dev-bounces at openssl.org on behalf of appro at openssl.org> wrote:
>>
>>>So suggestion is to impose /arch:ia32 on all users. Well, I personally
>>>have lesser problem with that (as most most performance-critical
>>>assembly code paths will be compiled anyway, processor capabilities
>>>detected at run-time, and inappropriate paths will be avoided), but I'm
>>>not sure if all users would appreciate it.
>>
>> Normally I don’t use Windows, so shouldn’t care. However, as
>>occasionally
>> I do stumble across a Windows system - I’d *much* dislike being stuck
>>with
>> /arch:ia32.
>>
>> 20 years ago I might have had a different opinion. ;)
>>
>>
>>> Note that it's possible to
>>>set CL environment variable to add options of your preference without
>>>modifying anything.
>>
>> And that’s probably what the requester should do, IMHO.
>>
>>>Maybe that would be more adequate option to
>>>customize builds for specific needs. In worst case it would be
>>>appropriate to tie this option to no-sse2 configuration option, but not
>>>unconditionally...
>>
>> Maybe…
>>
>
>I certainly agree for most modern users it is not needed and may slow
>down the code since it is not using the latest and greatest.
>
>How about something like this.. A VC-WIN32-XP target that has
>everything needed to make a max compatibility target
>When building under VS2012 and above.. (I also tested in VS2015)
>adds CFLAGS  /arch:IA32 -D_USING_V110_SDK71_
>adds BIN_LDFLAGS=/subsystem:console,5.01 /opt:ref
>
>And before you scream OMG XP..
>https://support.microsoft.com/en-us/gp/lifewinembed
>- Windows Embedded Standard 2009. This product is an updated release
>of the toolkit and componentized version of Windows XP. It was
>originally released in 2008; and Extended Support will end on January
>8, 2019.
>- Windows Embedded POSReady 2009. This product for Point of Sale
>devices reflects the updates available in Windows Embedded Standard
>2009. It was originally released on 2009, and extended support will
>end on April 9, 2019.
>
>People just don't want to upgrade these embedded machines, but we want
>to keep the communications between them as secure as possible with the
>latest and greatest OpenSSL. :P
>-- 
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