kdevelop -> libpq-fe.h

 I am trying to build an C program that uses libpq. I get an error message
( I use kdevelop in a Red Hat Linux 6.2 ) . I am trying to use the example in

file:/usr/doc/postgresql-7.0.2/programmer/libpq-chapter.htm

But I got this message:


c++ -DHAVE_CONFIG_H -I. -I. -I..     -O0 -g3 -Wall -c main.cpp
main.cpp:8: libpq-fe.h: No such file or directory
gmake: *** [main.o] Error 1
*** failed ***

Any help ?


eduardo K