[Scons-users] set Windows environment for 32 or 64 bit x86 builds

[Bill Deegan]

Just note, TARGET_ARCH only works on win32/MSVC right now.

On Sat, Dec 17, 2016 at 10:29 AM, Rob Boehne <robb at datalogics.com> wrote:

> Thanks!  This lets me delete about 30 lines of problematic code and
> replaced it with TARGET_ARCH=xyz
>
> From: Scons-users <scons-users-bounces at scons.org> on behalf of Bill
> Deegan <bill at baddogconsulting.com>
> Reply-To: SCons users mailing list <scons-users at scons.org>
> Date: Friday, December 16, 2016 at 7:44 PM
> To: SCons users mailing list <scons-users at scons.org>
> Subject: Re: [Scons-users] set Windows environment for 32 or 64 bit x86
> builds
>
> Rob,
>
> Look at TARGET_ARCH and TARGET_HOST in the manpage.
> In your case (Windows & msvc I'm assuming) TARGET_ARCH will set the
> appropriate flags.
>
> For other platforms/compilers you'll have to set the appropriate flags
> (see Jason's response), if gcc it's basically -m32 -m64.
> Though you may want to add other flags to set -march if you have a limited
> set of target cpus.
>
> -Bill
> Co-Manager, SCons project
>
> On Fri, Dec 16, 2016 at 1:19 PM, Rob Boehne <robb at datalogics.com> wrote:
>
>> All,
>>
>> I’ve inherited a complicated cross-platform build in SCons, involving
>> swig, C++, C# and Java.   On all platforms but windows, it uses a
>> command-line argument to the compiler to generate code for 64-bit or
>> 32-bit.  Under windows however, it runs the “vcvarsall.bat” with the
>> appropriate argument, and then goes through some machinations to get the
>> variables it sets into the scons environment.
>>
>> Is this even a little bit necessary?  What is the canonical method for
>> specifying 32 or 64-bit code generation?
>>
>> Thanks
>>
>> Robert Boehne
>>
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>>
>>
>
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