Thread
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Undefined symbol
Boulat Khakimov <boulat@inet-interactif.com> — 2001-03-06T23:44:31Z
Hi, Im writing a function in C (encode) for PG that uses blowfish encryption here is how I compile it. gcc -I/usr/src/postgresql-7.0.3/src/include -I/usr/src/postgresql-7.0.3/src/backend -O2 -Wall -Wmissing-prototypes -Wmissing-declarations -lcrypt -I/usr/src/postgresql-7.0.3/src/interfaces/libpq -I/usr/src/postgresql-7.0.3/src/include -fpic -I/home/boulat/Funio.com/database/libblowfish.a -c -o encode.o encode.c it compiles nicely with 0 error or warnings, then i do gcc -shared -o encode.so encode.o rm encode.o so now im left we a ready to go encode.so , So now I add that function to DB testdb=# CREATE FUNCTION encode(text,text) testdb-# RETURNS text testdb-# AS '/home/boulat/Funio.com/database/encode.so' testdb-# LANGUAGE 'C'; CREATE no problems there either, BUT ... testdb=# select encode('bob','bob'); ERROR: Load of file /home/boulat/Funio.com/database/encode.so failed: /home/boulat/Funio.com/database/encode.so: undefined symbol: BF_cfb64_encrypt thats the function that I call from inside my c code... but Why??? It compiled with no errors or warning, and I have all the right includes in my source code. Im confused! Any help would be appreciated. Regards, Boulat Khakimov -- Nothing Like the Sun -
Re: [SQL] Undefined symbol
Mathijs Brands <mathijs@ilse.nl> — 2001-03-07T00:47:23Z
On Tue, Mar 06, 2001 at 06:44:31PM -0500, Boulat Khakimov allegedly wrote: > testdb=# select encode('bob','bob'); > ERROR: Load of file /home/boulat/Funio.com/database/encode.so failed: > /home/boulat/Funio.com/database/encode.so: undefined symbol: > BF_cfb64_encrypt > > thats the function that I call from inside my c code... > but Why??? It compiled with no errors or warning, and I have all the > right includes in my source code. > > Im confused! Are you linking against a blowfish library? If so, either include the encryption functions in your shared object, or load that shared object yourself. Have a look at the dlopen manpage for more information. I hope this helps a bit, Mathijs -- It's not that perl programmers are idiots, it's that the language rewards idiotic behavior in a way that no other language or tool has ever done. Erik Naggum -
Re: Undefined symbol
Eric G. Miller <egm2@jps.net> — 2001-03-07T08:05:45Z
On Tue, Mar 06, 2001 at 06:44:31PM -0500, Boulat Khakimov wrote: > Hi, > > Im writing a function in C (encode) for PG that uses blowfish encryption > here is how I compile it. > > gcc -I/usr/src/postgresql-7.0.3/src/include > -I/usr/src/postgresql-7.0.3/src/backend -O2 -Wall -Wmissing-prototypes > -Wmissing-declarations -lcrypt > -I/usr/src/postgresql-7.0.3/src/interfaces/libpq > -I/usr/src/postgresql-7.0.3/src/include -fpic > -I/home/boulat/Funio.com/database/libblowfish.a -c -o encode.o > encode.c I suspect you want ... -L/usr/src/postgresql-7.0.3/src/interfaces/ /home/boulat/Funio.com/database/libblowfish.a -c -o encode -lpq But I wonder if, libblowfish.a is compiled with position independent code *and* if libpq is reachable by the backend database. I don't think your libblowfish is getting linked into the object. > it compiles nicely with 0 error or warnings, > > then i do > gcc -shared -o encode.so encode.o > rm encode.o > > so now im left we a ready to go encode.so , So now I add that function > to DB > > testdb=# CREATE FUNCTION encode(text,text) > testdb-# RETURNS text > testdb-# AS '/home/boulat/Funio.com/database/encode.so' > testdb-# LANGUAGE 'C'; > CREATE > > no problems there either, BUT ... > > testdb=# select encode('bob','bob'); > ERROR: Load of file /home/boulat/Funio.com/database/encode.so failed: > /home/boulat/Funio.com/database/encode.so: undefined symbol: > BF_cfb64_encrypt > > thats the function that I call from inside my c code... > but Why??? It compiled with no errors or warning, and I have all the > right includes in my source code. > > Im confused! > > Any help would be appreciated. > > Regards, > Boulat Khakimov > > -- > Nothing Like the Sun > > ---------------------------(end of broadcast)--------------------------- > TIP 5: Have you checked our extensive FAQ? > > http://www.postgresql.org/users-lounge/docs/faq.html > -- Eric G. Miller <egm2@jps.net> -
Re: (blowfish in Postgres) Undefined symbol -- YAY!
Boulat Khakimov <boulat@inet-interactif.com> — 2001-03-07T15:19:44Z
"Eric G. Miller" wrote: > I suspect you want > ... > -L/usr/src/postgresql-7.0.3/src/interfaces/ > /home/boulat/Funio.com/database/libblowfish.a -c -o encode -lpq > > But I wonder if, libblowfish.a is compiled with position independent > code *and* if libpq is reachable by the backend database. I don't think > your libblowfish is getting linked into the object. > libblofish.a wasnt getting linked to encode.so , I fixed that now it works w/o a glitch! :) two way encoding in Postgres using blowfish!!! If anyone is interested im goin to put a source code on a webpage or something Life is good again :P Regards, Boulat Khakimov
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Re: (blowfish in Postgres) Undefined symbol -- YAY!
Brent R. Matzelle <bmatzelle@yahoo.com> — 2001-03-09T21:54:38Z
--- Boulat Khakimov <boulat@inet-interactif.com> wrote: > "Eric G. Miller" wrote: > > I suspect you want > > ... > > -L/usr/src/postgresql-7.0.3/src/interfaces/ > > /home/boulat/Funio.com/database/libblowfish.a -c -o > encode -lpq > > > > But I wonder if, libblowfish.a is compiled with position > independent > > code *and* if libpq is reachable by the backend database. I > don't think > > your libblowfish is getting linked into the object. > > > > > libblofish.a wasnt getting linked to encode.so , I fixed that > now it works w/o a glitch! :) > > two way encoding in Postgres using blowfish!!! > > If anyone is interested im goin to put a source code on a > webpage or > something Encrypted authentication is always good :) Please provide the code. I'm very interested in seeing it. Thanks. Brent __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/