From 9e5f1dd9e1807737958fd0ec8ecea5df14108b0a Mon Sep 17 00:00:00 2001
From: Valentin Villenave <vvillenave@hypra.fr>
Date: Tue, 26 Oct 2021 18:42:52 +0200
Subject: Preserve compatibility with older GLib versions

This is a rather non-invasive change, that will
be easy to remove whenever we go ahead and stop
supporting older systems.
---
 configure.ac      |  2 +-
 shell/ev-window.c | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index c25f2e80..d8815a09 100644
--- a/configure.ac
+++ b/configure.ac
@@ -91,7 +91,7 @@ GLIB_GSETTINGS
 
 dnl Specify required versions of dependencies
 CAIRO_REQUIRED=1.14.0
-GLIB_REQUIRED=2.62.0
+GLIB_REQUIRED=2.54.0
 GTK_REQUIRED=3.22.0
 WEBKIT_REQUIRED=2.6.0
 LIBSECRET_REQUIRED=0.5
diff --git a/shell/ev-window.c b/shell/ev-window.c
index 79afaa37..f520ae88 100644
--- a/shell/ev-window.c
+++ b/shell/ev-window.c
@@ -2174,6 +2174,19 @@ show_loading_progress (EvWindow *ev_window)
 	return FALSE;
 }
 
+#if !GLIB_CHECK_VERSION(2, 62, 0)
+/* Non-year-2038-proof compatibility with GLib < 2.62 */
+static GDateTime *
+_g_file_info_get_modification_date_time (GFileInfo *info)
+{
+       GTimeVal mtime;
+
+       g_file_info_get_modification_time (info, &mtime);
+       return g_date_time_new_from_timeval_utc (&mtime);
+}
+#define g_file_info_get_modification_date_time _g_file_info_get_modification_date_time
+#endif
+
 static void
 ev_window_load_remote_failed (EvWindow *ev_window,
 			      GError   *error)
-- 
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