From: Antonio Ospite <ao2@ao2.it>
Date: Thu, 22 Feb 2018 10:27:53 +0000 (+0100)
Subject: Makefile: fix detecting the compiler
X-Git-Url: https://git.ao2.it/experiments/opencv_trail_effect.git/commitdiff_plain/7555c94ede06439d70ea34dca41947c0caf2fa95?ds=inline;hp=4eac1abc8f592c16e93a54f5b1d04c371d35f8da

Makefile: fix detecting the compiler

Rely on the compiler version, to behave "more correctly" in case CXX is
just c++.
---

diff --git a/Makefile b/Makefile
index 6bb3c15..4e316b9 100644
--- a/Makefile
+++ b/Makefile
@@ -23,12 +23,14 @@ CXXFLAGS += -fno-common \
 	    -fstack-protector \
 	    --param=ssp-buffer-size=4
 
-ifneq ($(CXX),clang++)
+COMPILER = $(shell $(CXX) -v 2>&1 | grep -q "clang version" && echo clang || echo gcc)
+
+ifeq ($(COMPILER), gcc)
   CXXFLAGS += -Wunsafe-loop-optimizations \
 	      -Wunused-but-set-variable
 endif
 
-ifeq ($(CXX),clang++)
+ifeq ($(COMPILER), clang)
   LDFLAGS += -Qunused-arguments
 endif