Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.csd.uwm.edu!uakari.primate.wisc.edu!indri!ames!uhccux!munnari.oz.au!uqcspe!hitech!clyde
From: clyde@hitech.ht.oz (Clyde Smith-Stubbs)
Newsgroups: comp.sources.wanted
Subject: Re: convert .o modules to archives with entry per function
Message-ID: <320@hitech.ht.oz>
Date: 23 Aug 89 01:24:49 GMT
References: <1359@batserver.cs.uq.oz>
Organization: HI-TECH Software, Brisbane, QLD, Australia
Lines: 46

From article <1359@batserver.cs.uq.oz>, by bigm@batserver.cs.uq.oz (Michael Pilling):
> I am writing some library modules, but unfortunately the brain damaged unix linker
> links in ALL the library even if you only use one function. This very annoying if
> some of the libraries are large.
> 
> It seems the only way to create a random library (ranlib) is to write every function
> as a separate .c file, compile these to .o's and then archive them.
> This would be a pain.

I don't really regard this as a pain. Putting each logically independent
module in a separate .c file is the way that everybody else does it.
Use make(1) to make it painless.

> I'm after a utility for apollos or suns (preferably machine independent) that
> takes a .o file containing multiple functions
> and creates from it a .o file for each function in the original
> so that each of the resulting files contain only one function and can then be
> archived

While I hesitate to label anything as impossible or 'too hard' I would regard
such a utility as certainly difficult. It would in fact be impossible to
split up every possible module. If you had data items in a module referenced
from more than one function the utility would have to be smart enough not
to split those functions.

My advice is: learn about make and use it. Setting up a Makefile for a
large library takes a little time to begin with, but maintenance is minimal.

A minimal example of such a Makefile follows: (this has been gutted, so
don't gripe about inconsistncies)

SRCS	= c68.i memcpy.c memset.c memcmp.c abs.c atoi.c \
	  calloc.c ctype.c atol.c strstr.c

OBJS	= memcpy.o memset.o memcmp.o abs.o atoi.o \
	  calloc.o ctype.o atol.o strstr.o

68libc.lib:	$(OBJS)
		-rm -f 68libc.lib
		$(LIBR) r 68libc.lib $(OBJS)

-- 
Clyde Smith-Stubbs
HI-TECH Software, P.O. Box 103, ALDERLEY, QLD, 4051, AUSTRALIA.
INTERNET:	clyde@hitech.ht.oz.au		PHONE:	+61 7 300 5011
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