[GRASSLIST:2191] libpq.so.3: invalid ELF header

[Marta Benito]

Hi, 
I have problems with grass57, I've compiled it and seems work but some
commands make me feel unhappy:

g.list: error while loading shared libraries:
/usr/local/grass57-03_01_2004/lib/libpq.so.3: invalid ELF header


first, I've added the library to /etc/ld.so.conf and 've run ldconfig
(probabily wrong??), but nothing new happens even rebooting the system. 
Any idea?

thanks 

Marta