From f058d3aa7447402128437b11a2f87e08f19e62d2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Kundr=C3=A1t?= <jan.kundrat@cesnet.cz>
Date: Tue, 22 Nov 2016 10:31:01 +0100
Subject: [PATCH] cmake: use -Wall on GCC and Clang

These checks come from [1]. The `MATCHES` operator is used for clang
because of Apple's special string.

[1] http://stackoverflow.com/questions/10046114/in-cmake-how-can-i-test-if-the-compiler-is-clang/10055571#10055571
---
 CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 215872ef..3976befc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,6 +10,10 @@ include(CTest)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
+if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+    set(CMAKE_CXX_FLAGS "-Wall ${CMAKE_CXX_FLAGS}")
+endif()
+
 add_library(spdlog INTERFACE)
 
 option(SPDLOG_BUILD_EXAMPLES "Build examples" OFF)