#1207 Don't build mt-test by default. It requires C++11. G++ 5.3 will not compile #include <exiv2/exiv2.hpp> because AutoPtr is deprecated.

samples/Makefile

@@ -87,7 +87,6 @@ BINSRC = addmoddel.cpp        \
 OTHERSRC = exiv2json.cpp      \
            geotag.cpp         \
            metacopy.cpp       \
-           mt-test.cpp        \
            path-test.cpp      \
            toexv.cpp
 
@@ -184,7 +183,7 @@ exiv2json: %: %.cpp Jzon.o
 
 # mt-test requires C++11
 mt-test: %: %.cpp
-	$(COMPILE.cc) -std=c++11 -stdlib=libc++  -o $@.o $<
+	$(COMPILE.cc) -std=c++11  -o $@.o $<
 	@$(MAKEDEPEND)
 	@$(POSTDEPEND)
 	$(LIBTOOL) --mode=link $(LINK.cc) $@.o -o ../bin/$@