[gupnp-igd] Update GLib dep to somewhat ancient 2.32

[Olivier Crête <tester src gnome org>]

commit 69caaa3254797e5a08d98b211774adb24451fb33
Author: Olivier Crête <olivier crete collabora com>
Date:   Wed Mar 18 18:54:35 2020 -0400

    Update GLib dep to somewhat ancient 2.32

 README      |  2 +-
 meson.build | 16 ++++++++++++----
 2 files changed, 13 insertions(+), 5 deletions(-)
---
diff --git a/README b/README
index a723de1..772c412 100644
--- a/README
+++ b/README
@@ -6,4 +6,4 @@ It is supposed to have a very simple API. Read the gtk-doc.
 
 The only dependencies are:
  - GUPnP 1.2
- - GLib 2.26
+ - GLib 2.32
diff --git a/meson.build b/meson.build
index 6306588..d6bde90 100644
--- a/meson.build
+++ b/meson.build
@@ -3,14 +3,22 @@ project('gupnp-igd', 'c', version: '0.2.5')
 gnome = import('gnome')
 pkg = import('pkgconfig')
 
+glib_req = '>= 2.32'
 dependencies = [
-    dependency('glib-2.0', version: '>= 2.26', required: true),
-    dependency('gobject-2.0', version: '>= 2.26', required: true),
-    dependency('gupnp-1.2', version : '>= 1.1.0'),
-    dependency('gssdp-1.2', version : '>= 1.1.0'),
+    dependency('glib-2.0', version: glib_req, required: true),
+    dependency('gobject-2.0', version: glib_req, required: true),
+    dependency('gupnp-1.2', version : '>= 1.2.0'),
+    dependency('gssdp-1.2', version : '>= 1.2.0'),
     dependency('gthread-2.0', required: true)
 ]
 
+glib_req_minmax_str = glib_req.split().get(1).underscorify()
+add_project_arguments(
+  '-DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_' + glib_req_minmax_str,
+  '-DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_' + glib_req_minmax_str,
+  language: 'c')
+
+
 subdir('libgupnp-igd')
 subdir('tests')
 if get_option('gtk_doc')