Re: 2 (small?) problems

[Fergus Henderson <fjh@cs.mu.oz.au>]

Thomas Hiller, you wrote:
> 2)	Shared libg++ problem.
> 	I have a problem (also with the normal gcc), when I install the compiler
> 	in a non-standard place (e.g. /work/egcs). The shared libg++ is not
> 	found. I had to set the LD_LIBRARY_PATH to include $prefix/lib. Is there
> 	a portable way to set the shared library path from the compiler ? The
> 	compiler already issues -L$prefix/lib.

As far as I'm aware there's no portable way.  Depending on the system,
you use either `-rpath' or `-R', and depending on the system, multiple
directories must either be specified as separate options, or a
colon-separated path must be specified as a single option.

On sparc-sun-solaris, use multiple -R options (e.g. `-Rdir1 -Rdir2').
On i586-linux-pc-gnu, use multiple -rpath options (`-rpath dir1 -rpath dir2').
On alpha-dec-osf and mips-sgi-irix, use a single -rpath option
(e.g. `-rpath dir1:dir2').

Really this nonportability is something that gcc should encapsulate,
just as `gcc -shared' encapsulates (some of) the non-portable aspects
of creating shared libraries on different systems.  gcc ought to
recognize `-rpath' on all these systems, and it should handle the
accumulation of multiple `-rpath' options into a single colon-separated
path for the linker on alpha-dec-osf and mips-sgi-irix.

Cheers,
	Fergus.

-- 
Fergus Henderson <fjh@cs.mu.oz.au>   |  "I have always known that the pursuit
WWW: < http://www.cs.mu.oz.au/~fjh >   |  of excellence is a lethal habit"
PGP: finger fjh@128.250.37.3         |     -- the last words of T. S. Garp.