Re: Building a library with tools that depend on it

[Nicola Pero]

> Hi folks,
> 
> I am trying to write a GNUmakefile to :
> 
>    - Create a library "libPiranhas"
>    - Compile various demos as tools that depend on the "libPiranhas"=20
> target
> 
> I tried to include the "library.make" and use the "LIBRARY_NAME =3D=20
> libPiranhas", but there is no libPiranhas created after compilation=20
> (which goes well) :/

It should be in

shared_obj/ix86/linux-gnu/gnu-gnu-gnu/libPiranahs.so

(or a different directory if you are on a different system).

There should also be a handy symbolic link

obj/libPiranhas.so --> shared_obj/ix86/linux-gnu/gnu-gnu-gnu/libPiranahs.so

 
>    So my RTFM-style question are:
> 
>    - How do I write a target for building a shared library from objc=20
> source files

Have a look on

http://www.gnustep.it/nicola/Tutorials

there are two tutorials on writing gnustep makefiles (the first one, and
the last one).  A simple step by step tutorial is probably what you need.


>    - How do I write a target for building a tool that depends on this=20
> shared library and properly links with it

In case the tutorials don't explain this, I'll quickly sum up - say that
you have (just guessing, you need to creatively adapt to your case):

xxx/
xxx/Library
xxx/Tools

You then add

xxx/GNUmakefile

as follows:

include $(GNUSTEP_MAKEFILES)/common.make
SUBPROJECTS = Library Tools
include $(GNUSTEP_MAKEFILES)/aggregate.make

this simple makefile will step first in Library, then in Tools, so you can
compile from top-level both Library and Tools by typing 'make'.

Then you add

xxx/Library/GNUmakefile

the makefile for your library.

Then you add

xxx/Tools/GNUmakefile

the makefile for your tools, where you add

ADDITIONAL_TOOL_LIBS += -lpiranahs
ADDITIONAL_TOOL_LIB_DIRS += -L../Library/obj

But - suggestion - take the comfortable and friendly way :-) - read the
tutorials first before trying! :-)