bug#60415: Emacs master doesn't build if !HAVE_TREE_SITTER

[Po Lu]

Paul Eggert <eggert@cs.ucla.edu> writes:

> On my platform the current Emacs master (commit
> 91ae9f3d12885373d38c3e8d693f7dc210f9d471) won't build, failing with:
>
>   ELC      progmodes/typescript-ts-mode.elc
>
> In toplevel form:
> progmodes/typescript-ts-mode.el:31:2: Error: Symbol’s function
> definition is vo\
> id: treesit-query-compile
>
>
> Full log (compressed) attached, built from Git on Fedora 37
> x86-64. The best fix isn't immediately obvious to me; adding a
> declare-function doesn't work.
>
> This platform doesn't have the tree-sitter library, so
> HAVE_TREE_SITTER is not defined which means C doesn't define
> treesit-query-compile.
>
> I will probably just install the tree-sitter library to work around
> the bug, but thought I'd document it. Presumably you can simulate it
> by configuring --without-tree-sitter.

Copying in Yuan Fu.

Would people please test their changes on an Emacs *WITHOUT* tree-sitter
before installing them in the future?