From 9b59ef0590f8975d258b482b8b1ce40643093f60 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jean-Micha=C3=ABl=20Celerier?=
 <jeanmichael.celerier+github@gmail.com>
Date: Wed, 13 Jan 2016 18:14:20 +0100
Subject: [PATCH] Don't disable PCH if CMAKE_xx_COMPILER_ID is not set

Should fix #82
---
 CMake/cotire.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMake/cotire.cmake b/CMake/cotire.cmake
index a4fb533..d103357 100644
--- a/CMake/cotire.cmake
+++ b/CMake/cotire.cmake
@@ -2578,7 +2578,7 @@ function (cotire_choose_target_languages _target _targetLanguagesVar _wholeTarge
 			set (${_targetLanguagesVar} "" PARENT_SCOPE)
 			return()
 		endif()
-		if (_targetUsePCH AND "${_language}" MATCHES "^C|CXX$")
+		if (_targetUsePCH AND "${_language}" MATCHES "^C|CXX$" AND NOT "${CMAKE_${_language}_COMPILER_ID}" STREQUAL "")
 			cotire_check_precompiled_header_support("${_language}" "${_target}" _disableMsg)
 			if (_disableMsg)
 				set (_targetUsePCH FALSE)