Activating MSVC correctly

[certik]

Right now I do:

$ cmd
> call "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat" x64
> /path/to/shell.exe
$ # Now we can use MSVC, all environment variables are set correctly

This sets $PATH, so I save it using echo $PATH > msvc.sh, then go into msvc.sh and change it to export PATH='...', where ... is the original content. Then I load it using source msvc.sh. If I do this in the above inner most shell, then things keep working.

If I source msvc.sh in a new shell, then I verified that echo $PATH is identical in both shells, but MSVC does not work in the new shell. This leads me to believe that there are other variables that we need to set. It's hard to figure out which ones without #137.

[certik]

A nicer workaround:

~$ cat ~/bin/msvc.bat
call "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat" x64
C:\Users\ondrejcertik\bin\shell

And I use it like this:

~$ which cl
cl not found
~$ bin/msvc.bat

C:\Users\ondrejcertik>call "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat" x64
**********************************************************************
** Visual Studio 2022 Developer Command Prompt v17.11.3
** Copyright (c) 2022 Microsoft Corporation
**********************************************************************
[vcvarsall.bat] Environment initialized for: 'x64'
~$ which cl
C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.41.34120\bin\HostX64\x64\cl.exe

[certik]

It's possible to make it a one-liner almost, but it hits a bug: #159.