[Scons-users] MSVC is broken for x86 builds on x64 hosts

[Bill Deegan]

Michael,

Which version of SCons, which python?
Is something broken for you?
Or are you just asserting that the current logic is not correct?

-Bill

On Thu, Mar 28, 2019 at 7:04 AM Michael Hartmann <
michael.hartmann at qtronic.de> wrote:

> The code to support Visual Studio tries to construct a path to cl.exe form
> the host arch (amd64) and the target arch (x86):
>
>
>
> vc.py:get_host_target()
>
> vc.py:get_host_target() req_target_platform:x86
>
> _check_cl_exists_in_vc_dir(): host platform amd64, target platform x86
>
> _check_cl_exists_in_vc_dir(): checking for cl.exe at C:\Program Files
> (x86)\Microsoft Visual
> Studio\2017\WDExpress\VC\Tools\MSVC\14.14.26428\bin\Hostx64\x86\cl.exe
>
> find_vc_pdir no compiler found 14.1
>
> trying to find VC 14.0
>
> find_vc_dir(): found VC in registry: C:\Program Files (x86)\Microsoft
> Visual Studio 14.0\VC\
>
> found VC 14.0
>
> vc.py:get_host_target()
>
> vc.py:get_host_target() req_target_platform:x86
>
> _check_cl_exists_in_vc_dir(): host platform amd64, target platform x86
>
> _check_cl_exists_in_vc_dir(): checking for cl.exe at C:\Program Files
> (x86)\Microsoft Visual Studio 14.0\VC\bin\amd64_x86\cl.exe
>
> find_vc_pdir no compiler found 14.0
>
> trying to find VC 14.0Exp
>
> find_vc_dir(): no VC registry key
> 'Microsoft\\VCExpress\\14.0\\Setup\\VC\\ProductDir'
>
> find_vc_pdir return None for ver 14.0Exp
>
>
>
> The problem is: Visual Studio is always a x86 application. The compiler
> for a x86 target is not a cross compiler and is found in VC\bin, not
> VC\bin\amd64_x86.
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