cl -help works the same on z: or on c:
and it’s equivalent to the output of cl /? from c: Z:\>cat cl_out.txt | grep favor /O1 maximum optimizations (favor space) /O2 maximum optimizations (favor speed) /Os favor code space /Ot favor code speed /Ox optimizations (favor speed) /favor:<blend|AMD64|INTEL64|ATOM> select processor to optimize for, one of: where cl_out.txt is result cl -help > cl_out.txt > On Jul 31, 2020, at 10:58 PM, Michael Paquier <mich...@paquier.xyz> wrote: > > On Fri, Jul 31, 2020 at 10:41:46PM -0400, Dmitry Markman wrote: >> but if I issue that command if the current folder is on z: >> >> Z:\>cl /? >> Microsoft (R) C/C++ Optimizing Compiler Version 19.16.27042 for x64 >> Copyright (C) Microsoft Corporation. All rights reserved. >> >> usage: cl [ option... ] filename... [ /link linkoption... ] >> >> from other hand > > Interesting. We rely on the presence of "favor:" in the output to > determine which platform to use, aka x64 or Win32. > >> cl -help >> >> returns consistent answer from c: or from z: >> >> so platform wasn’t identified properly if build started from z: > > What's the output of cl -help on "z:" in this case? Is the exact same > output as "cl /?" or "cl -help" on c: generated? I have to admit that > I don't really know why things would behave this way, but Windows is a > platform full of undiscovered mysteries, and I have never seen the > output of cl being an issue even for some of my company work, which > uses stuff much more fancy than the normal way of compiling on > Windows, requiring me to patch a bit the scripts of src/tools/msvc/ in > a different way. > -- > Michael
