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<== Date ==> <== Thread ==>
Subject: Re: rpath compiling?
From: Dirk Zimoch <[email protected]>
To: Heinrich du Toit <[email protected]>
Cc: TechTalk EPICS <[email protected]>
Date: Fri, 17 Aug 2007 14:21:02 +0200
Hi Heinrich,

Unset RUNTIME_LDFLAGS in your Makefile or CONFIG.*. But then you must setup LD_LIBRARY_PATH properly or use ldconfig.

However, what I do is to set INSTALL_LOCATION of base to a specific installation directory, e.g. /usr/local/epics/base-3.14.8. This will be used for rpath, not the source directory! Then I build base, pack the installation directory and install it to all PCs.

However, for extensions like medm, I set EPICS_BASE to /usr/local/epics/base, which is a symbolic link to the current base version.

> ls -l /usr/local/epics
total 40
lrwxrwxrwx    1 root     root    11 Jun  1 02:36 base -> base-3.14.8
drwxrwxr-x    9 root     sls   4096 Apr 12  2006 base-3.13.10
drwxr-xr-x   10 root     sls   4096 Apr 12  2006 base-3.13.2
drwxr-xr-x   10 root     sls   4096 Apr 12  2006 base-3.13.9
drwxrwxr-x   11 root     sls   4096 Dec 14  2006 base-3.14.7
drwxrwxr-x   11 root     sls   4096 Jul 17 13:23 base-3.14.8
drwxrwxr-x   11 root     sls   4096 May 16 17:44 base-3.14.9
drwxrwxr-x   11 root     sls   4096 Nov 23  2006 base-3.14.CVS
drwxrwxr-x   12 root     sls   4096 Nov 17  2006 extensions
lrwxrwxrwx    1 root     sls     10 Aug 17  2006 seq -> seq-2.0.10
drwxrwxr-x    7 root     sls   4096 Jun 21 15:02 seq-2.0.10
drwxrwxr-x    3 root     sls   4096 Apr  3  2006 seq-2.0.8

Thus, when I change the symbolic link to a new version of base, all client programs will automatically use the new version.

Dirk

Heinrich du Toit wrote:
Hi

I'm trying to built an ubuntu package for EPICS :)
Just so that I don't have to compile the thing on every client out
there. - Some machines don't really need gcc and all that development
stuff

Anyways.
I'm having a bit of trouble with the way EPICS links to it's own .so
files.
(linux-x86)

It seems that the compile thing sets --rpath in the linker.
This way it links to a specific directory.
Problem is that this directory is not the same when built and installed.
So I would like to have it built without rpath set. Then install the .so files to /usr/lib And then normal ld.so stuff in linux can link it up.

My question is - how do I get EPICS to not link to a specific directory?

This seems like a chicken-egg problem..
As I want to compile the things linked to libraries that will only be
installed later. :(

Any help will be appreciated
-Heinrich






--
Dr. Dirk Zimoch
Paul Scherrer Institut, WBGB/006
5232 Villigen PSI, Switzerland
Phone +41 56 310 5182
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rpath compiling? Heinrich du Toit
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