[glib] meson: work around meson not passing on the threads dependency when link_with is used

[Christoph Reiter <creiter src gnome org>]

commit 2939585bd694eafbe7547beafccbbd38497a7678
Author: Christoph Reiter <creiter src gnome org>
Date:   Fri Jan 5 13:22:17 2018 +0100

    meson: work around meson not passing on the threads dependency when link_with is used
    
    When using link_with with declare_dependency() or executable() the threads
    dependency is not passed on. To work around the issue add the threads dependency
    manually. See https://github.com/mesonbuild/meson/issues/1426
    
    This makes the static build on Linux work.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=788806

 glib/meson.build |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/glib/meson.build b/glib/meson.build
index 6bd2ec9..add29d0 100644
--- a/glib/meson.build
+++ b/glib/meson.build
@@ -241,7 +241,11 @@ libglib = library('glib-2.0',
   c_args : ['-DG_LOG_DOMAIN="GLib"', '-DGLIB_COMPILATION'] + pcre_static_args + glib_hidden_visibility_args
 )
 
-libglib_dep = declare_dependency(link_with : libglib,
+libglib_dep = declare_dependency(
+  link_with : libglib,
+  # thread_dep doesn't get pulled in from libglib atm,
+  # see https://github.com/mesonbuild/meson/issues/1426
+  dependencies : [thread_dep],
   # We sadly need to export configinc here because everyone includes <glib/*.h>
   include_directories : [configinc, glibinc])