Linker error since upgrade to DMD 2.077.1: fatal error C1905: Front end and back end not compatible

[John]

On Sunday, 17 December 2017 at 15:57:08 UTC, ParticlePeter wrote:
> I upgraded from DMD 2.074.1 (!) to 2.077.1 and tried to compile 
> a mixed c++/d project (DMD links to one c++ lib). Here is the 
> full error message:
>
> fatal error C1905: Front end and back end not compatible (must 
> target same processor).
> LINK : fatal error LNK1257: code generation failed
> Error: linker exited with status 1257
> dmd failed with exit code 1257.
>
> No such problems with my previous DMD version.
>
> What has changed with linking since then? (Skimmed through 
> changelogs but found nothing).
>
> I found a workaround with specifying LINKCMD64 to my VS 2017 
> linker, but this is not a viable solution. The project must 
> build with DMD on any system with VS installed without me 
> knowing its exact location.
>
> What can I do to make it run out of the box and without the 
> link command specified?

Yah the sc.ini file is wrong for Environment64.


[Environment64]
LIB="%@P%\..\lib64"

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.
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; Windows installer uncomments the version detected
LINKCMD=%VCINSTALLDIR%\bin\HostX86\x86\link.exe