Re: dynamic LD_LIBRARY_PATH

On Wed, 16 Apr 2014 17:06:19 +0200, "H.Merijn Brand"
<[email protected]> wrote:

> I have a situation where the default location for Oracle ($ORACLE_HOME)
> is pointing to a complete Oracle-10g database environment. That setting
> includes $LD_LIBRARY_PATH (and on HP-UX $SHLIB_PATH)
> 
> That environment is used for 3gl, 4gl and perl
> 
> So far so good.
> 
> Oracle's 10g libraries cause a crash when used in perl scripting when
> DBD::Oracle is used in the same script as Net::SSLeay (OpenSSL-1.0.1g)
> 
> If I install Oracle Instant Client 12.1 (/pro/oracle/ic121) alongside
> Enterprise 10g (/pro/oracle/v102) and set ORACLE_HOME related environ
> to /pro/oracle/ic121 et all, DBD::Oracle-1.70 works, even with OpenSSL
> 
> When I however work in the default 10g environment, DBD::Oracle cannot
> connect, as the LD_LIBRARY_PATH eventually loads libons.so from 10g
> 
> Oracle decided to make *most* libraries have version numbers in the
> names, but did not do that for libons.so (libnnz12.so is obviously a
> different lib than libnnz10.so)
> 
> I so far found no workaround in this deadlock, as I have only .so files
> and no .a files, so I cannot include the .so's in the generated build
> for Oracle.so
> 
> What I now would like to do, is to change LD_LIBRARY_PATH and
> SHLIB_PATH *just before* the Oracle.so starts loading. That way, I can
> just put the shared libs that belong to DBD::Oracle next to Oracle.so
> 
> if I change Oracle.pm to start with
> --8<---
> BEGIN {
>     use Config;
>     (my $loc = $INC{"DBD/Oracle.pm"}) =~
> 	s{/DBD/Oracle.pm$}{/$Config{archname}/auto/DBD/Oracle};
>     $ENV{LD_LIBRARY_PATH} = "$oloc:$ENV{LD_LIBRARY_PATH}";
>     $ENV{SHLIB_PATH}      = "$oloc:$ENV{SHLIB_PATH}";
>     }
> -->8---
> 
> I am still too late :( :(

even then I get conflicts with 10g:

$ env LD_LIBRARY_PATH=/pro/asql/o83R/lib/perl/5.14.2/IA64.ARCHREV_0-LP64-ld/auto/DBD/Oracle:/pro/oracle/ic12 1/lib:$LD_LIBRARY_PATH SHLIB_PATH=/pro/asql/o83R/lib/perl/5.14.2/IA64.ARCHREV_0-LP64-ld/auto/DBD/Oracle:/pro/oracle/ic121/lib:$SHLIB_PATH qs
c f parm
/pro/asql/o83R/lib/perl/5.14.2/IA64.ARCHREV_0-LP64-ld/auto/DBD/Oracle at /pro/asql/o83R/lib/perl/5.14.2/DBD/Oracle.pm line 16.
DBI connect('','PROBEV',...) failed: ERROR OCIEnvNlsCreate. Check ORACLE_HOME (Linux) env var  or PATH (Windows) and or NLS settings, permissions, etc. at /pro/lib/perl5/site_perl/5.14.2/IA64.ARCHREV_0-LP64-ld/PROCURA/DBD.pm line 335.

> I found no commands on HP-UX that alter the embedded library path of
> existing libraries (then I could change that in a copy to the location
> of installation on installation and disable the use of LD_LIBRARY_PATH
> and SHLIB_PATH for those)
> 
> Has anybody else encountered problems like this?
> 
> Any workarounds?
> 
> 


-- 
H.Merijn Brand  http://tux.nl   Perl Monger  http://amsterdam.pm.org/
using perl5.00307 .. 5.19   porting perl5 on HP-UX, AIX, and openSUSE
http://mirrors.develooper.com/hpux/        http://www.test-smoke.org/
http://qa.perl.org   http://www.goldmark.org/jeff/stupid-disclaimers/