Setup makefile for ‘path agnostic’ inclusions

In my project files I just want to be able to say:

main.cpp:

#include <foo.h>
#include <bar.h>

When these headers files reside in separate

-Project
    -include
        -foo
           foo.h
        -bar
           bar.h
    -src
        main.cpp

I’ve setup my make file to attempt to achieve this but I still get fatal error: foo.h: No such file or directory so I haven’t been able to set it up correctly.

Makefile:

LIBS = ./include/foo ./include/bar

all:
    g++ -o bin/myapp src/main.cpp $(LIBS) -std=c++11

Is LIBS correct? How can I achieve relative/agnostic include paths?

Answer

INCLUDES = -I./include/foo -I./include/bar

all:
    g++ -o bin/myapp src/main.cpp $(INCLUDES) -std=c++11