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

According to the make manual, you can use the implicit linking rule with multiple objects if one of these matches the executable name, eg:

VPATH = src include
CPPFLAGS = -I include

main: implementation.o
main.o: header.hpp
implementation.o: header.hpp

This will build an executable named main from both main.o and implementation.o.

Note however that the builtin implicit rule uses the C compiler for linking, which will not link against the C++ std library by default, you will need to add the flag -lstdc++ to LDLIBS explicitly