meson: gtk: install headers

gtk/a11y/meson.build

@@ -107,3 +107,4 @@ a11y_headers = files([
   'gtkwidgetaccessible.h',
   'gtkwindowaccessible.h',
 ])
+install_headers(a11y_headers, subdir : 'gtk-4.0/gtk/a11y')

gtk/deprecated/meson.build

@@ -1,3 +1,5 @@
 gtk_deprecated_sources = files([])
 
 gtk_deprecated_headers = files([])
+
+install_headers(gtk_deprecated_headers, subdir: 'gtk-4.0/gtk/deprecated/')

gtk/meson.build

@@ -595,6 +595,8 @@ gtk_public_headers = files([
   'gtkwindowgroup.h',
 ])
 
+install_headers(gtk_public_headers, subdir: 'gtk-4.0/gtk/')
+
 gtk_unix_sources = files([
   'gtkcustompaperunixdialog.c',
   'gtkpagesetupunixdialog.c',
@@ -668,7 +670,7 @@ gtktypebuiltins_h = custom_target(
   input   : gtk_public_headers + gtk_deprecated_headers,
   command : [mkenum, perl, glib_mkenums, meson.current_source_dir() + '/gtktypebuiltins.h.template', '@OUTPUT@', '@INPUT@'],
   install: true,
-  install_dir: 'include/gtk-4.0/gtk/' # XXX ???
+  install_dir: 'include/gtk-4.0/gtk/'
 )
 
 gtktypebuiltins_c = custom_target(
@@ -716,7 +718,7 @@ gtkversion = configure_file(
   input  : 'gtkversion.h.in',
   output : 'gtkversion.h',
   configuration: cdata,
-  install_dir: 'include/gtk-4.0/gtk/' # XXX ???
+  install_dir: 'include/gtk-4.0/gtk/'
 )
 
 gtk_cargs = [
@@ -787,13 +789,6 @@ endif
 
 gnome.compile_schemas()
 
-
-# Install necessary headers
-
-# install_headers(gtk_public_headers,     subdir: 'gtk-3.0/gtk/')
-# install_headers(gtk_deprecated_headers, subdir: 'gtk-3.0/gtk/deprecated/')
-# install_headers(a11y_headers,           subdir: 'gtk-3.0/gtk/a11y/')
-
 libgtk = shared_library('gtk',
   sources: [typefuncs, gtk_sources, gtkmarshal_h, gtkprivatetypebuiltins_h],
   c_args: gtk_cargs,