From 1bb64f774fc0c9595f60e44d9a5f9cda9eda8cd7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Klitzing?= <aklitzing@gmail.com>
Date: Fri, 22 Jan 2016 07:43:00 +0100
Subject: [PATCH] Add detection of defined <LANG>_COMPILER_LAUNCHER vars

Since CMake 3.3 it is possible to use <LANG>_COMPILER_LAUNCHER target
property to define ccache. So we need to check those setting, too.
---
 CMake/cotire.cmake | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/CMake/cotire.cmake b/CMake/cotire.cmake
index d103357..74c008d 100644
--- a/CMake/cotire.cmake
+++ b/CMake/cotire.cmake
@@ -1811,7 +1811,8 @@ function (cotire_check_precompiled_header_support _language _target _msgVar)
 	else()
 		set (${_msgVar} "${_unsupportedCompiler}." PARENT_SCOPE)
 	endif()
-	if (CMAKE_${_language}_COMPILER MATCHES "ccache")
+	get_target_property(launcher ${_target} ${_language}_COMPILER_LAUNCHER)
+	if (CMAKE_${_language}_COMPILER MATCHES "ccache" OR launcher MATCHES "ccache")
 		if (NOT "$ENV{CCACHE_SLOPPINESS}" MATCHES "time_macros|pch_defines")
 			set (${_msgVar}
 				"ccache requires the environment variable CCACHE_SLOPPINESS to be set to \"pch_defines,time_macros\"."