Fixes build with only `-Dgtk_doc=true` without
`-Dintrospection=enabled`:
Program gi-docgen found: NO
Configuring gdk4.toml using configuration
docs/reference/gdk/meson.build:13:2: ERROR: Tried to use not-found external program in "command"
`introspection` is `auto` by default.
The rest of the docs build is only contingent on
`if get_option('gtk_doc')` so we should use the same restriction here.
We check for `build_gir` below already, and the gi-docgen subproject
itself does not need gobject-introspection so it's fine to do it like
this.
Dummy dependencies are not required to execute a subproject
automatically for providing a program, nor do you need to explicitly
call subproject() to do that.
A `[provide]` section in the wrap file is enough.
The old wiki page has a couple issues:
* It's out-of-date, not having any notes for GTK4 specifically,
and it doesn't link to `gvsbuild`, which (I believe) is
the current official (and best) way to build GTK with MSVC.
* It's "locked", so it's harder for contributors to update. This
is OK, except for one spicy detail:
* It's not clear how to contribute/report issues on the locked wiki
pages, so out-of-date information falls off the radar.
Regardless :) the gtk.org GTK for Windows docs are a much better
springboard, in my opinion.
Let people know that they will need to use GTK with the Nahimic service
disabled or OpenGL disabled or put their GTK application into the Nahimic
backlist, or try to use GLES, since there is a known issue in the Windows
nVidia graphics drivers and Nahimic that causes GL operations to fail,
causing crashes in operations such as window resizes.
This will close issue #4113--sadly, there is nothing we can do within
GTK to fix the issue.
This commit adds a new meson option -Dupdate_screenshots=true.
When it is enabled, and -Dgtk_doc=true is also used, then the
build will generate images to include in the API docs from
ui files in docs/reference/gtk/images.
Note: we still keep a copy of the images in git, in order to
allow building without a display connection. To update the
images in git, the generated images need to be copied back
from the builddir to the srcdir.
We currently list everything as a dependencies, regardless of whether
it actually is; this is a source of confusion for users that read the
GTK documentation.
Gi-docgen has a new "related" key in the project configuration which
allows us to list libraries that are merely related to the namespace
we are documenting; the "dependencies" key is used to document the
actual namespace dependencies, now.
By adding the `docs_url` key in the project configuration file,
gi-docgen will generate an OpenSearch XML file, which allows to add
docs.gtk.org/<reference> as a "search engine" in web browsers.
