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Re: Making gnustep libs in a buildroot

From: Nicola Pero
Subject: Re: Making gnustep libs in a buildroot
Date: Fri, 10 May 2002 13:12:20 +0100 (BST)

> Hi,
> I'm wondering if there is support in gnustep makefiles for the following:
> I want to be able to make an rpm containing several different GNUstep 
> libraries, all but one of them dependent on that one.
> In general with RPMs you go through a build stage first, then an install 
> stage, where the install can go into an installation root.
> I would like to prevent the libraries I am building from depending on my 
> currently installed set of "live" libraries, and only depend on / link to the 
> ones that are being built at the same time.
> I presume this means I am going to have to build the first one, install it 
> into the installroot, then build the second one, telling it to use a -L and 
> -I path of the installroot.
> What flags can I use for make to achieve this?
> Ideally I'd like to be able to do all the builds in a oner, then all the 
> installs, so is there support for make to be given a library/header search 
> path for a not-yet-installed library?

I'm not sure I got all of your question :-) but ...

... but the first question I would ask you is - ignoring RPMs for now -
can you build all of your libraries on a clean system with a single
top-level 'make' command ?

If you can't, then you need to fix that first. :-)

Fixing that requires adding -I and -L flags so that the not-yet-installed
libraries are found.

For example, say that you have


./Stephen/xxx [first library]

./Brandon/xxx [second library prelinked against the first one]

In the top level GNUmakefile, you list Stephen before Brandon (so it's
compiled before the other library).

In Stephen/GNUmakefile, you simply compile libStephen.
In Brandon/GNUmakefile, you simply compile libBrandon, but adding

libBrandon_INCLUDE_DIRS += -I../
libBrandon_LIB_DIRS += -L../Stephen/obj/
libBrandon_LIBRARIES_DEPEND_UPON += -lStephen

(assuming headers of Stephen are accessed as in #include
"Stephen/Stephen.h") [warning/disclaimer - untested: typos in the exact
variable names likely ;-)]

Then, compiling on a clean system should work with a single 'make' at the
top-level.  Try and hack till that works reliably :-)

Once this is done, I think making an RPM out of all the libraries at once,
using the default gnustep-make support for RPM should automatically work
out of the box (or your own hand-made support, it doesn't matter).

Maybe I completely missed your question - if so pardon me and please
re-formulate your question :-)

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