Eclipse c++ How to work and build with existing code

[Gabboshow]

Hello folks!

I'm a newbie and I've a problem!
I've to work with a c++ code and I don't know how to import it and how to compile it on eclips ( I compiled it by command line).
The code has a particular structure and it is organized in this way:

repos____lib____configure (execute the configure file inside the libraries folders)
                      I           I___makefile (execute the make file inside the libraries folders,
                                                            requires make/make.def)
          I           I___ib1____.cpp
          I           I            I____.h
          I           ...          I____configure (it requires make/configure_lib and
                                                                  make/configure_includes
          I           ...          I____makefile (generated by configure)
          I           I___lib2___....
          i           I___.......
          I           I___libn____.cpp
          i                        I____.h
          i                        I____configure
          i                        I____makefile (generated by configure)
          I
          I___make(folder)__bashrc (are set the some environment variables)
          I                               I__configure_bin
          I                               I__configure_includes
          I                               I__configure_lib
          I                               I__make.def (are set all the include path and library path used
          I                                                         in the configure file)
          I___application__main.cpp
                                       I__configure
                                       I__makefile(generated by the configure file)

tu be sure that you understand my problem....

the first configure file is:

cd lib1; ./configure
cd ../lib2; ./configure
.....
....
cd ../libn; ./configure
cd

and the first makefile is

include /media/Dati/WORKHOME/repos/make/make.def

# this is the makefile for the whole library

lib:
	make -C lib1
	make -C lib2
	make -C libn

an example of configure file (the one inside lib1):

#!/usr/bin/perl

                                                                                                        #####################
$INC = '$(OPENCVINC) $(FLTKINC) $(DC1394V2INC)';  ##<-DEFINED IN /make.def
$LIB = '$(OPENCVLIB) $(FLTKLIB) $(DC1394V2LIB)';      #####################

#-------------------------------------------------------------------------------

require '/media/Dati/WORKHOME/repos/make/configure_lib';
print "Created Makefile.\n";

# this will create a include file for the whole directory, 
# using the template <dirname>.h.templ
require '/media/Dati/WORKHOME/repos/make/configure_includes';
print "Created $libname.h\n";

compile it without eclipse is simple
1) type /.configure in the lib folder
2) type make
3) go into the application folder
4) type ./configure
5) type make
6) run the program

my question is....in eclipse???
I imported the three with import/ import existing code as makefile project but now I don't know how compile it.
could you please help me? it's important!

thank you very much
gabriele