Re: Libtool, rpath, and libGL.so

2011-11-29 Thread Adam Mercer
On Mon, Nov 28, 2011 at 23:30, Andy Spencer  wrote:

> This seems to be caused by libtool adding a -rpath flag which forces the
> application to use the /usr/lib64 version provided by mesa even though
> ld.so.conf has been properly configured to use the nvidia version.

I ran into essentially the same problem on Scientific Linux 6,
essentially libtool sometimes incorrectly determines the system
library paths. I imagine if you look at the sys_lib_dlsearch_path_spec
variable within the libtool script it will state that /usr/lib is a
system library path and not /usr/lib64. Therefore libtool will assume
it needs to pass /usr/lib64 on the command line thereby leading to
this linking problem.

I raised this question a week or so ago and the workaround suggested was to set:

lt_cv_sys_lib_dlsearch_path_spec="/lib64 /usr/lib64"

during configure, this overrides the paths found by libtool and solved
the linking problem for me. Unfortunately this is a hack and ignores
any paths specified in ld.so.conf so you may need to tweak this
accordingly.

Hope this is of some help.

Cheers

Adam

___
https://lists.gnu.org/mailman/listinfo/libtool


Libtool, rpath, and libGL.so

2011-11-29 Thread Andy Spencer
I'm building a library of mine on Fedora 64-bit and running into some
problems. I'm running configure as follows:

  ./configure --prefix=/usr --libdir=/usr/lib64

The problem is that the wrong version of libGL.so is being used at
runtime. The correct version is /usr/lib64/nvidia/libGL.so.* but any
application built against my library uses /usr/lib64/libGL.so.* instead.

This seems to be caused by libtool adding a -rpath flag which forces the
application to use the /usr/lib64 version provided by mesa even though
ld.so.conf has been properly configured to use the nvidia version.

I can fix the problem for other programs by manually deleting all the
.la files provided by my library after I install it. However, my library
also comes with a demo program which is compiled along side the library
and I don't know how to make that use the correct version of libGL.

Is there any way to prevent the demo program from getting build with a
rpath, or are there any other ways to fix this?


pgpKhH0XiIbSJ.pgp
Description: PGP signature
___
https://lists.gnu.org/mailman/listinfo/libtool