Peter Jeremy wrote:
On 2010-Feb-01 20:13:07 +0000, David Kirkby <[email protected]> wrote:
$ cc -flags
shows as options for the Sun compiler:
-R<dir[:dir]> Build runtime search path list into executable
Actually building a gcc which will search at a specified place seems
next to impossible on Solaris. The GCC developers will not add an
option which allows the location of the libraries to be hard-coded. It
is not a problem if you install in /usr/local, That's a pain if you
don't have root access, or want to keep sepparate copies of gcc
around.
The generic way of specifying rpath (using gcc or Sun cc driver) with
the Sun linker is '-Wl,-R,dir:dir' Normally, the GNU linker (from
binutils) would use '-Wl,-rpath,dir:dir' but I'm not sure if the Sun
target changes this for Sun cc compatibility.
You should also be able to change the default specs file (what is
spat out by 'gcc -dumpspecs') to make gcc behave as desired.
Unfortunately, rpath is not a general solution for shared libraries
included in Sage because the paths would then be fixed at link time -
which wouldn't all the Sage package to be arbitrarily relocated.
No, but sage-env is run each time Sage is started. That prepends
$SAGE_ROOT/local/lib to whatever the LD_LIBRARY_PATH is set to.
I do not consider using crle a viable option, though it would work.
drkir...@hawk:~$ crle
Default configuration file (/var/ld/ld.config) not found
Platform: 32-bit LSB 80386
Default Library Path (ELF): /lib:/usr/lib (system default)
Trusted Directories (ELF): /lib/secure:/usr/lib/secure (system default)
drkir...@hawk:~$ crle -64
Default configuration file (/var/ld/64/ld.config) not found
Platform: 64-bit LSB AMD64
Default Library Path (ELF): /lib/64:/usr/lib/64 (system default)
Trusted Directories (ELF): /lib/secure/64:/usr/lib/secure/64 (system
default)
drkir...@hawk:~$
Then nobody would be no need to set LD_LIBRAARY_PATH. But I consider that bad as
it would force that directory to be searched, even if one did not wan them to
be. At least LD_LIBRARY_PATH is under the control of the user.
I'll look at using the dumpspecs on 't2'. It's not clear to me where I would
edit that though. The format of the file is not very obvious, and when I
searched a few weeks ago for documentation on this file, there is very little.
dave
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