[Scons-dev] Bug #2849 is not fixed (64-bit MS Windows 7 fails to build with 32-bit Visual Express C++ 2010).

[Edward d'Auvergne]

Hi,

I have tested out Scons 2.2.0 and have noticed that bug #2849
(http://scons.tigris.org/issues/show_bug.cgi?id=2849) is still
present.  I can see this also from the code:

https://bitbucket.org/scons/scons/src/8764000345e06e326ef68fd0acf9366c1f3eb885/src/engine/SCons/Tool/MSCommon/vc.py?at=default

in the lines:

    try_target_archs = [target_platform]
    if not req_target_platform and target_platform in ('amd64','x86_64'):
        try_target_archs.append('x86')

The suggestion by Kyle Strand was to change to code from:

    try_target_archs = [target_platform]
    if not req_target_platform and target_platform=='amd64'
        try_target_archs.append('x86')

to:

    try_target_archs = [target_platform]
    if target_platform in ('amd64','x86_64'):
        try_target_archs.append('x86')

The key problem is that in this case is that 'req_target_platform' is
set to 'x86_64' when 32-bit C++ is used on 64-bit Windows (and no
64-bit compiler is present).  Taking out the 'req_target_platform'
check fixes the problem for Scons 2.2.0.

Cheers,

Edward


--

Edward d'Auvergne
http://www.nmr-relax.com