Re: Build break on Emacs MPS build on Windows in the latest master

[Eli Zaretskii]

> From: Vincent Belaïche <vincent.b.1@hotmail.fr>
> CC: "emacs-devel@gnu.org" <emacs-devel@gnu.org>, "pipcet@protonmail.com"
>       <pipcet@protonmail.com>
> Date: Fri, 23 May 2025 09:02:59 +0000
> 
> Not sure whether this is related or not (whether I should open a new 
> discussion thread) but Emacs build for
> WSL2 on recent master (9f80363f8cbba078cc6e8c02501a4d25ef7b3a84) is broken.
> 
> What I get is that in src/desp/newdisp.d there is error : 
> 
> make[2]: Entering directory '/mnt/c/SOMEPATH/emacs/src'
> deps/dispnew.d:1: *** multiple target patterns.  Stop.
> make[2]: Leaving directory '/mnt/c/SOMEPATH/emacs/src'
> make[1]: *** [Makefile:549: src] Error 2
> 
> After having a look at dispnew.d I realized that there are targets with paths 
> like C:/my/path/to/some/file.o
> instead of /mnt/c/my/path/to/some/file.o, maybe this is what breaks the build.
> 
> It seems that something has changed lately because I had aleady built for 
> WSL2 without this issue on May
> 13th. My config is : 
> 
> --with-tree-sitter --wihout-gnutls --without-x

Thanks.

WSL builds of Emacs are not officially supported, as we don't have
experts on board who are aware of that platform's idiosyncrasies and
could support those builds.

In the absence of real understanding of the issue, I suggest to clean
up the repository (git clean -fdx) and then bootstrap.

If that doesn't help, I'm afraid you will need someone who knows about
WSL to help you solve this.