From 5f6c0322754a5e0312321b6151c6a5d9f58808e0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Mon, 19 Jun 2017 12:39:38 +0200
Subject: [PATCH] CMake: enable only C++, if possible.

Speeds up the configure run quite a bit, especially on Emscripten.
---
 CMakeLists.txt | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 659a6b812..e96f2dacd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,7 +24,13 @@
 #
 
 cmake_minimum_required(VERSION 2.8.12)
-project(Magnum)
+
+# Configuration fails on < 3.4 if only C++ is enabled (CheckFunctionExists
+# macro called from FindX11)
+if(NOT CMAKE_VERSION VERSION_LESS 3.4.0)
+    set(LANG CXX)
+endif()
+project(Magnum ${LANG})
 
 # CMake policies: enable MACOSX_RPATH by default
 if(POLICY CMP0042)