[Cmake] Library link line compression (again)

[Amitha Perera]

Hi all

Would anyone object to adding an option to CMake to allow link line
compression? In particular, I think that most projects have a tree
like library dependency, and it is possible for CMake to automatically
eliminate duplicate libraries without causing linking failures. The
default mode would be what it is now, which generates a long link line
(for vxl, at least).

As the message below indicates, this is probably a useful process, and
a good step in lieu of a full dependency analysis.

Amitha.


----- Forwarded message from "Christopher D. Carothers" <chrisc at cs . rpi . edu> -----

To: Amitha Perera <perera at cs . rpi . edu>
From: "Christopher D. Carothers" <chrisc at cs . rpi . edu>
Date: Fri, 16 Nov 2001 16:32:43 -0500 (EST)
Subject: fyi: static linking needs huge swap space!

	Folks, to link a static version of online tracining under linux
(and freebsd, solaris as well I suspect), you need 1.3 GB of swap in
addition to 256 MB of RAM. I watched "top" as the final link was being
done and you could just see the vast amount of memory being allocated.

	I think the reason for this because the link line has duplicates
of every lib. Amitha, is there anyway we can cut down on these duplicates
and still avoid unresolved symbols.

	My office machine now has 2 GB of swap :-)

	Happy compiling!

		Chris


----- End forwarded message -----