From: "Christopher Browne"

> If it's version 7.4, then yes indeed, missing "make
> install-all-headers" would explain the problem...
> 
> That would be my first thought on a Unix variant, but...
> 
> On Windows, the first really "native" version of PostgreSQL is version
> 8, where "install-all-headers" is implicit in "make install."

Aga.., your right...
I also vote for saying that config.log is seen. too.

Regards,
Hiroshi Saito