[Pgpool-general] problem to build pgpool II 2.3.3 with postgresql 8.4.4

[Gary Fu]

Hi,

After upgraded postgresql from 8.4.2 to 8.4.4, I have problem to run the 
pgool II 2.3.3 with the following error message:

/pgpool: symbol lookup error: /usr/local/pgsql/lib/libpq.so.5: undefined 
symbol: dlopen

When I tried to rebuild the pgpool II 2.3.3, the 'configure' failed with 
the following message:
configure:24789: result: no
configure:24799: error: libpq is not installed or libpq is old

In the 'config.log' file, I found the following message:

configure:24727: checking for PQexecPrepared in -lpq
configure:24757: gcc -o conftest -g -O2 -Wall -Wmissing-prototypes 
-Wmissing-declarations  -L/home/gfu/pgpool2/tmp_lib conftest.c -lpq  
-lcrypt -lresolv -lnsl -lm  >&5
/home/gfu/pgpool2/tmp_lib/libpq.so: undefined reference to `dlsym'
/home/gfu/pgpool2/tmp_lib/libpq.so: undefined reference to `dlerror'
/home/gfu/pgpool2/tmp_lib/libpq.so: undefined reference to `dladdr'
/home/gfu/pgpool2/tmp_lib/libpq.so: undefined reference to `dlopen'
/home/gfu/pgpool2/tmp_lib/libpq.so: undefined reference to `dlclose'
collect2: ld returned 1 exit status
configure:24763: $? = 1
configure: failed program was:
| /* confdefs.h.  */
|
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""


Does anyone know what's the problem and how to resolve it ?

Thanks,
Gary