Path: utzoo!attcan!uunet!bywater!arnor!entwash.watson.ibm.com!wlm
From: wlm@arnor.uucp
Newsgroups: comp.unix.aix
Subject: Re: Making shared libraries
Message-ID: <1990Oct14.214547.9997@arnor.uucp>
Date: 14 Oct 90 21:45:47 GMT
References: <1990Oct11.160027@ead.dsa.com>
Sender: news@arnor.uucp (NNTP News Poster)
Reply-To: wlm@entwash.watson.ibm.com (Bill Moran)
Organization: IBM TJ Watson Home for Tired Hackers
Lines: 31

Well, I think there are several ways of doing what you want.

First, shared things are looked for in /usr/lib and /lib (I forget the
order), so if you put that lib in one of those places, the system
will find it.

Second, I seem to recall that there is something like LIBPATH looked
for by the linker, and it looks in the places named. I don't recall
whether you have to say:
setenv LIBPATH
/lib:/usr/lib:/a/aragorn/homes/aragorn1/src/X11R4-new/mit/new-lib/X
or whether
setenv LIBPATH /a/aragorn/homes/aragorn1/src/X11R4-new/mit/new-lib/X is
sufficient.

Third, at link time, you can do something like:

cc -o ico -O ico.o
/a/aragorn/homes/aragorn1/src/X11R4-new/mit/new-lib/X/shared.\
o -L/a/aragorn/homes/aragorn1/src/X11R4-new/mit/new-lib/X -lm

where shared.o is a shared version of the R4 libX11.a. Using the -L flag
puts info in the load header of the resulting executable which allows
the loader to find the shared part when you try to run it.

Finally, there probably is a #![...] directive for the export file,
but I can't find the documentation for that stuff at the moment.

I would suggest judicious use of -L.

Bill Moran