meson: Build libgail-util

This adds libgail-util to the build process.

libgail-util/meson.build

@@ -0,0 +1,29 @@
+gailutil_sources = files(
+  'gailmisc.c',
+  'gailtextutil.c',
+)
+
+gailutil_public_headers = files(
+  'gailmisc.h',
+  'gailtextutil.h',
+  'gail-util.h',
+  )
+
+install_headers(gailutil_public_headers, subdir : 'gail-3.0/libgail-util')
+
+gailutil_link_args = common_ldflags
+
+if cc.get_id() == 'msvc'
+  gailutil_link_args += '-def:@0@/gailutil.def'.format(meson.current_source_dir())
+endif
+
+libgailutil = shared_library('gailutil-3',
+                             sources: [gailutil_sources],
+                             dependencies: libgtk_dep,
+                             include_directories: [confinc, gtkinc],
+                             c_args: [
+                               '-DGDK_DISABLE_DEPRECATED',
+                               '-DGTK_DISABLE_DEPRECATED',
+                             ] + common_cflags,
+                             link_args: gailutil_link_args,
+                             install: true)

meson.build

@@ -722,6 +722,7 @@ build_gir = get_option('introspection')
 subdir('gdk')
 subdir('gtk')
 subdir('modules')
+subdir('libgail-util')
 if get_option('demos')
   subdir('demos')
 endif