How to create a top level makefile

rushadrenaline · 12-06-2007, 03:04 AM

Hello everybody...
This is the directory structure of my Main folder, for which i need to write a top level makefile
$> ls /home/rah/MAIN
AF/
Middleware/
Platform/
Tools/-->toolchain_2.8.0/-->(bin/,include/,man/,lib/,usr/,share/,doc/,uclibc/)
Utils/

So the problem is that i need to write a top level makefile(which will reside in MAIN) and also i need to generate a ncurses based menu for compiling it.
All the Af,MW,platform,tools and utils directories have their makefiles ready.Now i need to write a top level makefile to link them all and also a ncurses based menu.
pls help me on this,its really urgent.
Thank you all

tronayne · 12-07-2007, 03:34 PM

For ncurses, you're on your own but here's what a top-level Makefile would look like:

Code:

MAKEFILE =      Makefile

#       Note: defined here, these will override local Makefile;
#       dont' define these unelss they're common to all subdirectories
CFLAGS  =       -O (or whatever you need)

#       Note: defined here, these will override local Makefile;
#       dont' define these unelss they're common to all subdirectories
LDFLAGS =       -lm (or whatever you need)

ALL:    build

build:
        @echo "Building system..."
        cd AF; make CFLAGS="$(CFLAGS)" LDFFLAGS="$(LDFFLAGS)"
        cd Middleware; make CFLAGS="$(CFLAGS)" LDFFLAGS="$(LDFFLAGS)"
        cd Platform; make CFLAGS="$(CFLAGS)" LDFFLAGS="$(LDFFLAGS)"
        cd Tools; make CFLAGS="$(CFLAGS)" LDFFLAGS="$(LDFFLAGS)"

install:
        @echo "Installing system..."
        cd AF; make CFLAGS="$(CFLAGS)" LDFFLAGS="$(LDFFLAGS)"
        cd Middleware; make CFLAGS="$(CFLAGS)" LDFFLAGS="$(LDFFLAGS)"
        cd Platform; make CFLAGS="$(CFLAGS)" LDFFLAGS="$(LDFFLAGS)"
        cd Tools; make CFLAGS="$(CFLAGS)" LDFFLAGS="$(LDFFLAGS)"

clean:
        @echo "Clean system..."
        cd AF; make clean
        cd Middleware; make clean
        cd Platform; make clean
        cd Tools; make clean

Now, if you do CFLAGS and LDFLAGS like this, they will override whatever is defined in a "local" Makefile; if you have different flags in you local Makefiles, don't define them in this Makefile and your "build" section would then look like

Code:

build:
        @echo "Building system..."
        cd AF; make
        cd Middleware; make
        cd Platform; make
        cd Tools; make

Hope this helps some, sorry that I can't write a ncurses for you but, you know, the command line works just fine, too.

rushadrenaline · 12-08-2007, 01:11 AM

Thank you very much tronayne.
Ill check if it works fine, but that was a very decent and clean reply from your side.
Thanx again

rushadrenaline · 12-10-2007, 10:16 PM

Hey guys this is what my dir structure looks like :

trav@localhost]$ ls ~/Main
AF/ Mware/ Platform/ Tools/ Utils/

The directory listing below, is an expansion of Mware.

[HTML]
MAIN/--
MWARE/--
Lib/
Miniapps/
Modules/--
dvdaudio/--
Makefile
dvdvideo/--
Makefile
gfxlibrary/--
Makefile
Keyboard/--
localkeyboard.c

remote/--
localremote.c
localremote.h

dvdaudioapi/--
include/
Makefile
dvdaudioapi.cpp
dvdaudioapi.d

dvdvideoapi/--
include/
Makefile
dvdvideoapi.cpp
dvdvideoapi.d

Obj/
Thirdparty/--
Applications/--

include/--
dvdlocal.h
dvdaudio.h
dvdtypes.h
vcdtypes.h
vcdaudio.h

Lib/--
librmdisc.so
librmdvdfs.so
librmdvdvideonav.so
librmvcdnav.so
Makefile
Modules/--
Module1/--
Application/--
include/--
src/--
Module2/--
Application/--
include/--
src/--
Module3/--
Application/--
include/--
src/--
Module4/--
Application/--
include/--
src/--
[/HTML]

dvdvideoapi.d file contains this code --(rmdvdvideoapi.o rmdvdvideoapi.d: Makefile rmdvdvideoapi.cpp rmdef.h rmdvdvideoapi.h\
rmdvdvideonav.h )

So the problem now is that i need to write a top level makefile that resides in Main/Mware/ and removes the .d (dependency) files and instead cretaes .so and .o files, while also taking care of the lower level makefiles.
Please ,help, im stuck again.
thanx