[Lazarus] Cannot load libpq.so

Mark Morgan Lloyd markMLl.lazarus at telemetry.co.uk
Tue Sep 25 20:54:11 CEST 2012

zeljko wrote:
> On Tuesday 25 of September 2012 19:56:52 Leonardo M. Ramé wrote:
>> Hi, I've installed PostgreSql from sources on a Linux machine, it's
>> installed on /usr/local/pgsql. It's libraries are in
>> /usr/local/pgsql/lib, and I updated my /etc/ld.so.conf to look there,
>> but still, when I run a simple testing app written with lazarus I'm
>> getting this:
>> EInOutError : Can not load PostgreSQL client library "libpq.so". Check
>> your installation
>> What can be happening?.
> Loader does not see  /usr/local/pgsql/lib directory
> try 
> export LD_LIBRARY_PATH=$LD_LIBRARY_PATH: /usr/local/pgsql/lib
> from terminal and then start your app ./myapplication

Do you actually /have/ a libpq.so? I've usually had to set up a symlink 
to get the names right.

As I understand it, there's an optional parameter on the library 
initialisation call to specify the exact library name, and there was 
recent discussion about how best to expose this to programmers via the LCL.

Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]

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