Can't not load libpq.so.3 - Mailing list pgsql-hackers

<div class="Section1"><p class="MsoNormal"><font face="Arial" size="2"><span lang="EN-GB" style="font-size:
10.0pt;font-family:Arial">I have install postgresql 7.3.4. I want to use C++ program to update my
database.</span></font><pclass="MsoNormal"><font face="Arial" size="2"><span lang="EN-GB" style="font-size: 
10.0pt;font-family:Arial">I link my program with this link option –L/usr/local/pgsql/lib.</span></font><p
class="MsoNormal"><fontface="Arial" size="2"><span lang="EN-GB" style="font-size: 
10.0pt;font-family:Arial">The program is linked, but when I run it.</span></font><p class="MsoNormal"><font
face="Arial"size="2"><span lang="EN-GB" style="font-size: 
10.0pt;font-family:Arial">I have this problem</span></font><p class="MsoNormal"><font face="Arial" size="2"><span
lang="EN-GB"style="font-size: 
10.0pt;font-family:Arial">My_program: <b><i><span style="font-weight:bold;
font-style:italic">error while loading shared libraries: libpq.so.3: cannot open shared object file: No such file or
directory</span></i></b>.</span></font><pclass="MsoNormal"><font face="Arial" size="2"><span lang="EN-GB"
style="font-size:
10.0pt;font-family:Arial">The link libpq.so.3 is the right directory /usr/local/pgsql/lib and it’s linked to
libpq.so.3.0.</span></font><pclass="MsoNormal"><font face="Arial" size="2"><span lang="EN-GB" style="font-size: 
10.0pt;font-family:Arial">What happening?</span></font><p class="MsoNormal"><font face="Arial" size="2"><span
lang="EN-GB"style="font-size: 
10.0pt;font-family:Arial"> </span></font><p class="MsoNormal"><font face="Arial" size="2"><span lang="EN-GB"
style="font-size:
10.0pt;font-family:Arial">Thanks.</span></font><p class="MsoNormal"><font face="Arial" size="2"><span lang="EN-GB"
style="font-size:
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