Checking your choice of C compiler and flags for coherency...
I've tried to compile and run the following simple program:

#include <stdio.h>
int main() { printf("Ok\n"); return(0); }

I used the command:

        gcc -o try -O -fno-strict-aliasing -pipe -Wdeclaration-after-statement -
I/usr/local/include -L/usr/local/lib try.c -lsocket -lnsl -ldb -ldl -lm -lc
         ./try

and I got the following output:

ld: fatal: library -ldb: not found
ld: fatal: File processing errors. No output written to try
collect2: ld returned 1 exit status
I can't compile the test program.
(The supplied flags or libraries might be incorrect.)

You have a BIG problem.  Shall I abort Configure [y]
Ok.  Stopping Configure.                  

##</code><code>##

SunOS zg4800 5.10 Generic_118833-33 sun4u sparc SUNW,Sun-Fire 
new server # find / -name "libdb.so*" -print  
/usr/lib/sparcv9/libdb.so.1 
/usr/lib/apoc/libdb.so.1 
/usr/lib/libdb.so.1