Getting undefined reference to error while linking the program

[rohandreamworld]

When i try to compile program i get error Undefined reference to while linking program .
Can anyone tell me why i am getting this error(in general why would we get such kind of error)
Also same code compiled fine with solaris platform(GCC compiler)..

sample code:
cursor.c

#include "dsybase.h"
#include "sqlbind.h"


DBCURSOR *DB_cursor_open(DBPROCESS *open_dbproc, 
                         char *select_stmt, 
                         DBINT *status, 
                         DBINT fetch_buf_size)
{
   DBCURSOR *cursor;
.....
....

dsybase.h

extern "C" {
include <sybfront.h>
#include <sybdb.h>

....
....

sybdeb.h

...
...
...
void DBFAR * CS_PUBLIC dbcursoropen  PROTOTYPE((
	DBPROCESS DBFAR *dbproc,
	BYTE DBFAR *stmt,
	DBINT scrollopt,
	DBINT concuropt,
	DBINT nrows,
	DBINT DBFAR *pstat
	));

/home1/local/release/build/release/uma_4.11.0/source/lib/brass/libbrass.a(cursor.o)(.text+0x17): In function `DB_cursor_open':
: undefined reference to `dbcursoropen'

I am getting too many similar error like above ..
Please anyone help...

[kooth]

You're getting this error because your makefile probably doesn't include a reference to the library where dbcursoropen() is defined, or the library is in another location.

[rohandreamworld]

Thanks Kooth you are right libraries are kept at another location........