Makefile example from http://stackoverflow.com/questions/16886591/how-do-i-enable-c11-in-gcc

Makefile

CXX=clang++
CXXFLAGS=-g -std=c++11 -Wall -pedantic
BIN=prog

SRC=$(wildcard *.cpp)
OBJ=$(SRC:%.cpp=%.o)

# $^ is all the dependencies
# $? is all the modified dependencies
all: $(OBJ)
	$(CXX) -o $(BIN) $^

# $@ is the the target
# $< is the the first dependency
%.o: %.c
	$(CXX) $@ -c $<

clean:
	rm -f *.o
	rm $(BIN)