From: Albe Laurenz [mailto:all@xxxxxxxxxxxxxxxxx]
Sent: Fri 11/17/2006 3:12 PM
To: surabhi.ahuja; pgsql-general@xxxxxxxxxxxxxx
Subject: RE: [GENERAL] dependency on 32 bit libpq.so on 64 bit Postgres server.
> let me explain with an example
> say i have a 32 bit
exceutable called Installer
>
> it dynamically links to 4
libraries which are called:
> libdbx1, it is dependent on
(ROOT)/postgres/arch/$(ARCH)d/lib -lpq
(specified in the makefile)
>
libdbx2, it is also dependent on (ROOT)/postgres/arch/$(ARCH)d/lib
-lpq
(specified in the makefile)
> libdbx3
>
libdbx4
>
> the above directory
(ROOT)/postgres/arch/$(ARCH)d/lib
>
> has libpq.so which i got
by installing the 32 bit Postgres 8.1.5 on
fc4
> its sixe is :
116532
>
> now i put these 4 libs and the exe in the target
mach
> and i run the executable Installer
>
> the traget
m/c is FC4 has Postgres 8.1.5 installed which is 64 bit
>
> so
it has libpq.so.4 and libpq.so.4.1 in /usr/lib64/ of that
machine.
>
> rwxrwxrwx 1 root
root 12 Nov 16 15:11 libpq.so.4 ->
libpq.so.4.1*
> -rwxr-xr-x 1 root root 135960 Nov 16 00:30
libpq.so.4.1*
>
> so when i run the exe it gives me this
error:
>
> | 2006-11-17 13:56:18.085 | 5659:1436573184 | DMF |
0 | ERROR
> | error@dmf | DMFConcreteRepositoryCreatorFactory.cxx:77
|
> Cannot find library for dbexpress: libpq.so.4: cannot open
>
shared object file: No such file or directory
> | 2006-11-17 13:56:18.085
| 5659:1436573184 | DMF | 0 | ERROR
> | error@dmf |
DMFConcreteRepositoryCreatorFactory.cxx:122 |
> Unknown repository:
dbexpress
I see.
You will need the 32-bit library libpq.so.4 to
run your installer
executable.
You can copy this library to some other
place on the machine with the
64-bit libpq.so (I assume it is the database
server) and try to make the
executable use this library.
First, check
if the installer executable or libdbx<n> has an RPATH set:
objdump
-p -j .dynstr <executable>|egrep RUNPATH\|RPATH
If yes, and it
points to the location of the 64-bit library, you are out
of
luck and the
only solution I can see is to install the server in
another
directory...
If no, or the RPATH points somewhere else, you
can use the environment
variable
LD_LIBRARY_PATH to make the installer
executable use the correct
libpq.so.4:
env
LD_LIBRARY_PATH=/location/of/32bit/lib
<executable>
Yours,
Laurenz
Albe
