The autotools build uses relative filenames here while with meson
we get absolute paths. Switch to basename so we get the same result
for both and don't break reproducible builds with absolute paths
in public headers.
Try to include the same things and in a similar order so differences
are easier to catch.
This also adds the backend specific .pc files for gdk like gdk-x11-3.0.pc
Under autotools the compiled schemas are in the build directory and with
meson they are in the root build dir. Avoid changing the autotools build for
now and add a special GTK_TEST_MESON env var which we can use to differentiate
the two.
See 1253e7bfcb for a similar fix on master.
Build the input modules for GTK+, either as modules or built directly
into GTK. Also provide a configure option to build the specified
immodules, or all, or the backend immodule(s) or none of the immodules
into GTK. Note that for Visual Studio all immodules are built into
the GTK DLL by default, like what is done in the Visual Studio projects.
Note that building the backend immodules for Quartz, X11 and Wayland are
currently untested.
This is so that the post install script will work on environments where
*NIX shell scripts are not supported, such as on Windows cmd.exe for
Visual Studio builds.
This will ensure that the version info is easily visible from the
GDK/GTK+ DLLs, and ensure that the print dialogs will have a more modern
look and feel.
...on Visual Studio builds, as it seems that the linker is optimizing
that symbol out (hence it is not exported in the DLL). This is to
ensure that the introspection files for GdkWin32 build.
PangoFT2 is optional on Windows, so we only really need the fallback if
when it is required.
Along with that, since FreeType does not typically ship with pkg-config
files in its CMake builds, check for the needed headers, .lib and
function and then use the fallback when they could not be found and
PangoFT2 is used.
On Visual Studio builds, since Cairo builds tend not to generate
pkg-config files for us, look for the headers and .lib's, before
attempting to download the Cairo repo (which is quite large) and
building it.
We can simplify this process when Meson gains the ability to check
for the dependencies in a declarative fashion, but before that, this
is what must be done.
