Re: [INTERFACES] Using libpq without LD_LIBRARY_PATH

I have the following two environment variable set:

PGDATA=/var/lib/pgsql/base
PGLIB=/usr/lib/psql

and I use the following to compile my cgis (from a make file):

search:         common/CCgi.o common/CHeadlineRecord.o common/CStoryRecord.o
common/CStudentRecord.o common/CDatabase.o common/CPairs.o proj.h
news-search/news-search.h
                g++ -DUN_PRODUCTION common/CCgi.o common/CStoryRecord.o
common/CStudentRecord.o common/CHeadlineRecord.o common/CDatabase.o
common/CPairs.o news-search/news-search.cpp -lpq -o
/home/httpd/cgi-bin/news-search.cgi


----- Original Message -----
From: Matthew Hagerty <matthew@venux.net>
To: <pgsql-interfaces@postgreSQL.org>
Sent: Friday, February 05, 1999 10:13 AM
Subject: [INTERFACES] Using libpq without LD_LIBRARY_PATH


>Greetings,
>
>I am trying to get a simple C program to compile and run without having to
>define the LD_LIBRARY_PATH environment variable.  First I tried this:
>
>gcc -o test -I/usr/local/pgsql/include -L/usr/local/pgsql/lib -lpq test.c
>
>With LD_LIBRARY_PATH defined the program runs fine, without LD_LIBRARY_PATH
>defined I get this error:
>
>ld.so failed: Can't find shared library "libpq.so.2.0"
>
>So, I changed my compiler like to this:
>
>gcc -o test -I/usr/local/pgsql/include test.c /usr/local/pgsql/lib/libpq.a
>
>This produced a linker error like this:
>
>fe-auth.o: Undefined symbol `_crypt' referenced from text segment
>*** Error code 1
>
>So, I added -lcrypt to the whole mess, like this:
>
>gcc -o test -I/usr/local/pgsql/include -lcrypt test.c
>/usr/local/pgsql/lib/libpq.a
>
>Then I get the following warning:
>
>ld: symbol __GLOBAL_OFFSET_TABLE_ remains undefined
>
>Where does all this stop?  Can I static link with libpq?  If so, how is it
>done?  As a last ditch effort I added symbolic links in my /usr/local/lib
>directory to libpq.a, libpq.so and libpq.so.2, and compiled like this:
>
>gcc -o test -I/usr/local/pgsql/include -lpq test.c
>
>This compiled okay, but when I run the program I get this warning:
>
>/usr/libexec/ld.so: warning: /usr/local/lib/libpq.so.2: minor version -1
>older than expected 0, using it anyway
>
>
>Any insight would be greatly appreciated.
>
>Thank you,
>Matthew Hagerty
>
>
>

Gregory W Burnham
Software Engineer
Excite Labs
Faculty Of Education
Simon Fraser University
Vancouver, B.C.
(604) 291 3615 ph
(604) 291 5679 fx