Re: [PATCH] compat/vcbuild/README: clean/update 'vcpkg' env for Visual Studio updates

[Jeff Hostetler <git@jeffhostetler.com>]

On 5/28/2019 8:08 AM, Philip Oakley wrote:
> When the user installs an updated version of Visual Studio, the previously
> generated MSVC-DEFS-GEN will need to be deleted to allow updating.
> 
> Alternatively the whole vcpkg download may be cleaned allowing it to be
> reloaded, though this may take much longer on slower connections.
> 
> Signed-off-by: Philip Oakley <philipoakley@iee.org>
> ---
> 
> In response to discussions at:
> https://github.com/git-for-windows/git/issues/2186
> 
> cc: Jeff Hostetler <git@jeffhostetler.com>
> cc: Johannes Schindelin <Johannes.Schindelin@gmx.de>
> 
>   compat/vcbuild/README | 7 +++++++
>   1 file changed, 7 insertions(+)
> 
> diff --git a/compat/vcbuild/README b/compat/vcbuild/README
> index 81da36a93b..40695fc1cc 100644
> --- a/compat/vcbuild/README
> +++ b/compat/vcbuild/README
> @@ -18,6 +18,13 @@ The Steps to Build Git with VS2015 or VS2017 from the command line.
>      Makefile:
>         <repo_root>/compat/vcbuild/MSVC-DEFS-GEN
>   
> +   - If you update your Visual Studio version, then delete the MSVC-DEFS-GEN
> +   file so that fresh environment variables can be discovered.
> +
> +   Or clean the "vcpkg" environment with:
> +
> +   $ make MSVC=1 clean
> +
>   2. OPTIONALLY copy the third-party *.dll and *.pdb files into the repo
>      root to make it easier to run and debug git.exe without having to
>      manipulate your PATH.  This is especially true for debug sessions in
> 

Did you mean to send this upstream or to Git for Windows?

I didn't think that the VS2015/VS2017 vcpkg-aware version of
compat/vcbuild/* had made it upstream yet, so this patch might not
apply upstream.


BTW, the Makefile (when MSVC=1 is defined) will take care of deleting
the MSVC-DEFS-GEN, so all we really need to say here is to do:

     $ make MSVC=1 clean
or  $ make MSVC=1 DEBUG=1 clean

after upgrading to a new version of VS.

Jeff

PS. I have a TODO item to fix the Makefile to automatically detect
and take care of this.