$NetBSD: patch-src_location_configure.json,v 1.4 2019/03/26 11:14:17 adam Exp $

Only try building mapboxgl on Linux.

--- src/location/configure.json.orig	2019-02-27 12:00:32.000000000 +0000
+++ src/location/configure.json
@@ -44,7 +44,7 @@
                 "features.gui",
                 "features.opengl",
                 "features.c++14",
-                "!config.intel_icc && (!config.win32 || config.mingw)"
+                "config.linux && !config.intel_icc && (!config.win32 || config.mingw)"
             ],
             "output": [ "privateFeature" ]
         },