GTK symbols are not visible by default, and only the ones annotated with
_GDK_EXTERN (and wrapper macros) are exported. We need to define
_GDK_EXTERN during the configuration, depending on the platform and
compiler we use.
The autotools build checks the version of GLib we are depending on in
order to generate the appropriate GLIB_VERSION values for the
min-required/max-allowed defines.
We have to work around some ordering problems here. We still
manage to keep most of the guts in modules/input/meson.build,
so it's not too ugly overall.
(The autotools build solves this with a 'make -C ../../input/modules'
inside gtk/Makefile, but that's not something we can or want to do.)
Remove workaround for gcc bug (Meson does that now), and
construct the right config.h defines for the headers on
the fly instead of listing them in the build file, which
is more error prone.
Add back dependencies on libgdk_dep and libsk_dep which are declared
dependencies. We removed this before because these declarations had
link_with: lines that dragged in the static libgdk.a and libgsk.a libs
which are linked into libgtk-4.so anyway and thus shouldn't be used
when linking internal exes/tools against libgtk-4. Remove the static
libs from the declared dependencies and have libgtk link those in
explicitly, so that the declared deps now just provide all the built
dependencies and include dirs and such for declared libgtk_dep users
such as the internal exes/tools, which want all the generated gsk/gdk/gtk
headers to exist before attempting to compile anything against the
gtk+ headers.
gdk and gsk are no longer separate libs but part of gtk now, so any
Gtk+ user should just link to gtk, there's no need to additionally
link against all those static helper libs that go into the gtk lib.
This means we need to specifically add confinc to include_directories
in more places to make sure the right config.h (i.e. ours) gets
included and not a subproject's like graphene's config.h.
Not dragging in static libs also fixes the issue of all executables
having to be relinked for any and all changes. With this change
it's super-fast now and can be skipped for most changes that don't
touch the external ABI.
gdkprivate-wayland.h includes generated wayland client protocol
headers and is included from gdkdisplaymanager.c, so we need to
generate those client protocol headers first also when building
main gdk itself.
This is how it's done in the autotools build. Also avoids problems
with multiple source files having the same name (gdkeventsource.c).
Also move broadway backend code into broadway subdir.
