From e8807fd901488044f2707fc89906c0a297c27fbf Mon Sep 17 00:00:00 2001
From: David Rosca <nowrep@gmail.com>
Date: Wed, 8 Nov 2017 11:23:03 +0100
Subject: [PATCH] Fix build on macOS < 10.12

Closes #2473
---
 src/lib/tools/disablewindowtabbbing.mm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/lib/tools/disablewindowtabbbing.mm b/src/lib/tools/disablewindowtabbbing.mm
index 230db0706..3724ed700 100644
--- a/src/lib/tools/disablewindowtabbbing.mm
+++ b/src/lib/tools/disablewindowtabbbing.mm
@@ -17,12 +17,15 @@
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * ============================================================ */
 #import <AppKit/AppKit.h>
+#import <Availability.h>
 
 // code taken from: https://www.mail-archive.com/interest@qt-project.org/msg23593.html
 // Disables auto window tabbing where supported, otherwise a no-op.
 void disableWindowTabbing()
 {
+#if __MAC_OS_X_VERSION_MAX_ALLOWED >= 101200
     if ([NSWindow respondsToSelector:@selector(allowsAutomaticWindowTabbing)]) {
         NSWindow.allowsAutomaticWindowTabbing = NO;
     }
+#endif
 }