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Thread: Linking to palloc and elog. (fwd)

Linking to palloc and elog. (fwd)

From
"Robert J. Sprawls"
Date:

Hello,
    I'm not too familiar with linking to pgsql libs. I've linked to
the static libpq libs before, but this is new ground. I'm following the
example in complex.  When I try to link here is my errors:

gcc -g -I /usr/pgsql/include testepg.o compos.o vect3d.o -o testepg
compos.o: In function `compos_in':

/home/sprawlsr/devel/projects/galwars/misc/compos.c:10: undefined
reference to `elog'

/home/sprawlsr/devel/projects/galwars/misc/compos.c:14: undefined
reference to `CurrentMemoryContext'

/home/sprawlsr/devel/projects/galwars/misc/compos.c:14: undefined
reference to `MemoryContextAlloc'

/home/sprawlsr/devel/projects/galwars/misc/compos.c:16: undefined
reference to `elog'

There is more, but this should do it.

Robert J. Sprawls            sprawlsr@worldnet.att.net
Tactical Dynamics            http://home.att.net/~sprawlsr
CEO (Chief Everything Officer)

Re: Linking to palloc and elog. (fwd)

From
Tom Lane
Date:
"Robert J. Sprawls" <sprawlsr@worldnet.att.net> writes:
> gcc -g -I /usr/pgsql/include testepg.o compos.o vect3d.o -o testepg
> compos.o: In function `compos_in':

> /home/sprawlsr/devel/projects/galwars/misc/compos.c:10: undefined
> reference to `elog'

Sounds like you're trying to make a standalone program from something
that's intended to be a dynamically loaded addon to the backend
(ie, a shared library).  There are some examples in contrib/ of the
right way to do this.

            regards, tom lane