From 1116472dce6523ce18a7a9ea9376aac8bed9f864 Mon Sep 17 00:00:00 2001
From: Tim Landscheidt <tim@tim-landscheidt.de>
Date: Sat, 26 Jan 2019 17:40:21 +0000
Subject: Use CMAKE_CXX_COMPILER_ID for conditions based on compiler

CMAKE_CXX_COMPILER is the path to the compiler binary and does not
need to follow a specific pattern.  For example, on Linux with GCC and
without an explicit "-DCMAKE_CXX_COMPILER:PATH=" option,
CMAKE_CXX_COMPILER is "/usr/bin/c++" which does not match "g++".
CMAKE_CXX_COMPILER_ID however will always reliably be "Clang" or
"GNU".
---
 CMakeLists.txt | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c85a5157..c2c27097 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -296,8 +296,7 @@ configure_file(
   ${PROJECT_SOURCE_DIR}/src/system.hh.in
   ${PROJECT_BINARY_DIR}/system.hh)
 
-if((CMAKE_CXX_COMPILER MATCHES "clang") OR
-   (CMAKE_CXX_COMPILER MATCHES "clang\\+\\+"))
+if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
   set(CMAKE_INCLUDE_SYSTEM_FLAG_CXX "-isystem ")
 endif()
 
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