make: implicit rule to link c++ project

Question

I am working my way through a make tutorial. Very simple test projects I am trying to build has only 3 files: ./src/main.cpp ./src/implementation.cpp and

Answer 1

How about this for a minimal Makefile:

SOURCES = src/main.cpp src/implementation.cpp

CXX = g++
CXXFLAGS = -g -W -Wall -Werror
LDFLAGS = -g

OBJECTS = $(SOURCES:.cpp=.o)

prog: $(OBJECTS)
    $(CXX) $(LDFLAGS) -o $@ $^

clean::
    $(RM) prog

.cpp.o:
    $(CXX) -MD -MP $(CXXFLAGS) -o $@ -c $<

clean::
    $(RM) src/*.o

DEPENDS = $(SOURCES:.cpp=.d)

-include $(DEPENDS)

%.d:
    @touch $@

clean::
    $(RM) src/*.d

This assumes GNU make and gcc, but it adds proper dependency tracking, so there is no need to explicitly list the header file dependencies.