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тАО09-27-2004 05:33 AM
тАО09-27-2004 05:33 AM
I am trying to connect to a Postgresql database from either C or C++ program.I have a HP-UX 11.23i (Itanium Processor ,64 bit),ia64,rx2600.
I get a compiler error when I compile. I am using libpg-fe.h.Is there a Library Path I am supposed to set and where should it point to.I am using the following program.Is there any other way to connect to databases in C or C++
Error:-
$ cc testpg.c
ld: Unsatisfied symbol "PQconnectdb" in file testpg.o
1 errors.
#include
#include
#include
int main() {
printf( "Hello World");
PGconn *conn;
const char *connection_str= "host=localhost user=postgres password=postgres dbname=mdpdb";
conn= PQconnectdb(connection_str);
/* if (PQstatus(conn) == CONNECTION_BAD ) {
fprintf(stderr,"Connection to %s failed,%s",connection_str,PQerrorMessage(conn));
}
else { printf("Connected OK\n");
}
PQfinish(conn); */
return EXIT_SUCCESS;
}
Help Appreciated
Thank you very much,
Vinay
program is attached.
I get a compiler error when I compile. I am using libpg-fe.h.Is there a Library Path I am supposed to set and where should it point to.I am using the following program.Is there any other way to connect to databases in C or C++
Error:-
$ cc testpg.c
ld: Unsatisfied symbol "PQconnectdb" in file testpg.o
1 errors.
#include
#include
#include
int main() {
printf( "Hello World");
PGconn *conn;
const char *connection_str= "host=localhost user=postgres password=postgres dbname=mdpdb";
conn= PQconnectdb(connection_str);
/* if (PQstatus(conn) == CONNECTION_BAD ) {
fprintf(stderr,"Connection to %s failed,%s",connection_str,PQerrorMessage(conn));
}
else { printf("Connected OK\n");
}
PQfinish(conn); */
return EXIT_SUCCESS;
}
Help Appreciated
Thank you very much,
Vinay
program is attached.
Solved! Go to Solution.
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2 REPLIES 2
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тАО09-27-2004 04:51 PM
тАО09-27-2004 04:51 PM
Solution
I connect this way (postgresql to SuSE linux; HPUX is probably very similar) :
a) environment variables :
export LD_RUN_PATH=/usr/local/pgsql/bin
export LD_LIBRARY_PATH=/usr/local/pgsql/lib
export PATH=/usr/loacal/pgsql/bin:$PATH
b) precompile
ecpg prog.pgc
c) compile+link
cc -I/usr/local/pgsql/include -c prog.c
cc -o prog.r prog.o -L/usr/local/pgsql/lib -lecpg
Werner
a) environment variables :
export LD_RUN_PATH=/usr/local/pgsql/bin
export LD_LIBRARY_PATH=/usr/local/pgsql/lib
export PATH=/usr/loacal/pgsql/bin:$PATH
b) precompile
ecpg prog.pgc
c) compile+link
cc -I/usr/local/pgsql/include -c prog.c
cc -o prog.r prog.o -L/usr/local/pgsql/lib -lecpg
Werner
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тАО09-28-2004 03:01 PM
тАО09-28-2004 03:01 PM
Re: Connection to Postgresql from C or C++ program
That worked great on HP-UX too. and also worked great on Suse Linix 7.3
Thank you Werner
Thank you Werner
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