Makefile: fix warnings when linking with clang++

Clang ignores some options during linkage and warns about it:

  clang: warning: argument unused during compilation: '-ansi'
  clang: warning: argument unused during compilation: '-Wp,-D_FORTIFY_SOURCE=2'

Add -Qunused-arguments to LDFLAGS to suppress the warnings.

diff --git a/Makefile b/Makefile
index 66355e0..6bb3c15 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -28,6 +28,10 @@ ifneq ($(CXX),clang++)
              -Wunused-but-set-variable
 endif
 
+ifeq ($(CXX),clang++)
+  LDFLAGS += -Qunused-arguments
+endif
+
 CXXFLAGS += $(shell pkg-config --cflags opencv)
 LDLIBS += $(shell pkg-config --libs opencv)