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* Linking problems
@ 1998-11-20 21:35 Randy Barrett <rbarr@shadow.net>
0 siblings, 0 replies; 5+ messages in thread
From: Randy Barrett @ 1998-11-20 21:35 UTC (permalink / raw)
To: pgsql-interfaces
I wrote a trivial (so I didn't include, but I will if I must...) C
program using the libpq C interface which compiles cleanly. My problem
is with the linker. There are two files, one contains (tested) code
for a standard set of cgi functions and the other contains code that
calls the db. Here's the gcc command I'm using:
gcc login.c stdcgi.c -I /usr/local/pgsql/include/ -L
/usr/local/pgsql/lib/ -lpq
And here's the error I'm getting:
/usr/local/pgsql/lib//libpq.a(fe-auth.o): In function
`pg_password_sendauth':
fe-auth.o(.text+0x17): undefined reference to `crypt'
I haven't dug through the postgreSQL code and perhaps I haven't read the
user manual thoroughly enough, but I'm not making any calls to
"pg_password_sendauth", so I'm confused with this error message.
Any help would be appreciated.
Randy Barrett
rbarr@shadow.net
^ permalink raw reply [nested|flat] 5+ messages in thread
* Linking problems
@ 2000-01-20 12:14 blackw@sfu.ca
0 siblings, 0 replies; 5+ messages in thread
From: blackw@sfu.ca @ 2000-01-20 12:14 UTC (permalink / raw)
To: pgsql-interfaces
Hi,
I seem to have a problem with my libpq++ library. I wrote a QnD test program that simply connects and disconnects from Postgres. When I compile it, I get the following error messages:
--------------------
gcc -o testsql testsql.o -lm -lstdc++ -lpq++
/usr/lib/libpq++.so: undefined reference to `clone__Q2t12basic_string3ZcZt18stri
ng_char_traits1ZcZt24__default_alloc_template2b1i03Rep'
/usr/lib/libpq++.so: undefined reference to `__dl__Q2t12basic_string3ZcZt18strin
g_char_traits1ZcZt24__default_alloc_template2b1i03RepPv'
/usr/lib/libpq++.so: undefined reference to `__eh_pc'
collect2: ld returned 1 exit status
make: *** [testsql] Error 1
--------------------
Here's the environment:
RH 6.1 (i386) (upgraded from 5.2)
egcs 1.1.2-24
libstdc++-2.9.0-24
postgresql-6.5.3-1.i386.rpm
I am guessing that there may be some library mix-up going on here, or I'm omitting a required library.
Alternatively, should I be using the postgresql-6.5.2 release that comes with RH6.1? (I had installed 6.5.3-1 when I was running RH5.2.)
Any insight would be appreciated. Thank-you in advance.
Cheers,
Richard
^ permalink raw reply [nested|flat] 5+ messages in thread
* RE: [INTERFACES] Linking problems
@ 2000-01-21 07:14 Ansley, Michael <Michael.Ansley@intec.co.za>
2000-01-21 16:35 ` Re: [INTERFACES] Linking problems Richard <blackw@sfu.ca>
0 siblings, 1 reply; 5+ messages in thread
From: Ansley, Michael @ 2000-01-21 07:14 UTC (permalink / raw)
To: 'blackw@sfu.ca' <blackw@sfu.ca>; pgsql-interfaces
You need to link to libpq as well (-lpq), so this line:
gcc -o testsql testsql.o -lm -lstdc++ -lpq++
should look like this:
gcc -o testsql testsql.o -lm -lstdc++ -lpq++ -lpq
Is this on the FAQ somewhere, because I've seen a couple of people asking
about this?
MikeA
>> -----Original Message-----
>> From: blackw@sfu.ca [mailto:blackw@sfu.ca]
>> Sent: Thursday, January 20, 2000 10:14 PM
>> To: pgsql-interfaces@postgreSQL.org
>> Subject: [INTERFACES] Linking problems
>>
>>
>> Hi,
>>
>> I seem to have a problem with my libpq++ library. I wrote a
>> QnD test program that simply connects and disconnects from
>> Postgres. When I compile it, I get the following error messages:
>>
>> --------------------
>> gcc -o testsql testsql.o -lm -lstdc++ -lpq++
>> /usr/lib/libpq++.so: undefined reference to
>> `clone__Q2t12basic_string3ZcZt18stri
>> ng_char_traits1ZcZt24__default_alloc_template2b1i03Rep'
>> /usr/lib/libpq++.so: undefined reference to
>> `__dl__Q2t12basic_string3ZcZt18strin
>> g_char_traits1ZcZt24__default_alloc_template2b1i03RepPv'
>> /usr/lib/libpq++.so: undefined reference to `__eh_pc'
>> collect2: ld returned 1 exit status
>> make: *** [testsql] Error 1
>> --------------------
>>
>> Here's the environment:
>> RH 6.1 (i386) (upgraded from 5.2)
>> egcs 1.1.2-24
>> libstdc++-2.9.0-24
>> postgresql-6.5.3-1.i386.rpm
>>
>> I am guessing that there may be some library mix-up going on
>> here, or I'm omitting a required library.
>>
>> Alternatively, should I be using the postgresql-6.5.2
>> release that comes with RH6.1? (I had installed 6.5.3-1
>> when I was running RH5.2.)
>>
>> Any insight would be appreciated. Thank-you in advance.
>>
>> Cheers,
>> Richard
>>
>>
>>
>> ************
>>
^ permalink raw reply [nested|flat] 5+ messages in thread
* Re: [INTERFACES] Linking problems
2000-01-21 07:14 RE: [INTERFACES] Linking problems Ansley, Michael <Michael.Ansley@intec.co.za>
@ 2000-01-21 16:35 ` Richard <blackw@sfu.ca>
2000-01-21 16:51 ` Re: [INTERFACES] Linking problems Tom Lane <tgl@sss.pgh.pa.us>
0 siblings, 1 reply; 5+ messages in thread
From: Richard @ 2000-01-21 16:35 UTC (permalink / raw)
To: pgsql-interfaces
Thank-you, Mike. Before posting, I did do some searches on various
pgsql mail lists and rummaged through the docs, but I didn't find any
mention of this. Not to say it isn't there. But if it is, it isn't
very obvious. I'd have expected it to be in the "libpq C++ Binding"
section of the Programmer docs. It isn't.
Last night in I downgraded to 6.5.2, and my test app linked fine WITHOUT
the -lpq option! Is that link option requirement specific to 6.5.3?
Cheers,
Richard
"Ansley, Michael" wrote:
>
> You need to link to libpq as well (-lpq), so this line:
> gcc -o testsql testsql.o -lm -lstdc++ -lpq++
>
> should look like this:
> gcc -o testsql testsql.o -lm -lstdc++ -lpq++ -lpq
>
> Is this on the FAQ somewhere, because I've seen a couple of people asking
> about this?
>
^ permalink raw reply [nested|flat] 5+ messages in thread
* Re: [INTERFACES] Linking problems
2000-01-21 07:14 RE: [INTERFACES] Linking problems Ansley, Michael <Michael.Ansley@intec.co.za>
2000-01-21 16:35 ` Re: [INTERFACES] Linking problems Richard <blackw@sfu.ca>
@ 2000-01-21 16:51 ` Tom Lane <tgl@sss.pgh.pa.us>
0 siblings, 0 replies; 5+ messages in thread
From: Tom Lane @ 2000-01-21 16:51 UTC (permalink / raw)
To: blackw@sfu.ca; +Cc: pgsql-interfaces
Richard <blackw@sfu.ca> writes:
> Last night in I downgraded to 6.5.2, and my test app linked fine WITHOUT
> the -lpq option! Is that link option requirement specific to 6.5.3?
Hard to believe that 6.5.2 and 6.5.3 are any different here. More
likely there is some configuration difference on your platform.
Shared libraries are handled weirdly on many Unixen --- the loader
may be configured to look automatically in some directories, for
example. If you have "ldconfig" on your system, check its config file.
regards, tom lane
^ permalink raw reply [nested|flat] 5+ messages in thread
end of thread, other threads:[~2000-01-21 16:51 UTC | newest]
Thread overview: 5+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
1998-11-20 21:35 Linking problems Randy Barrett <rbarr@shadow.net>
2000-01-20 12:14 Linking problems blackw@sfu.ca
2000-01-21 07:14 RE: [INTERFACES] Linking problems Ansley, Michael <Michael.Ansley@intec.co.za>
2000-01-21 16:35 ` Richard <blackw@sfu.ca>
2000-01-21 16:51 ` Tom Lane <tgl@sss.pgh.pa.us>
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