Question

I have a Makefile wihich produces so many object file – .o – . How can I redirect those to the one directory then create an executable from this directory ?

 Makefile format :

 x.o = x.hpp x.cpp
      g++ -c x.cpp

Answer 1

Well, that seems to be easy:

app: bin/x.o
    g++ bin/x.o -obin/x

bin/x.o: x.cpp
    g++ -c x.cpp -obin/x.o

You need to create the bin directory, but you can also add that to the Makefile easily.
Hope this helps.