Including dMatrix.h in a C++ file

[Suttipan Limanond]

I'm sorry to bother the list again.

I'm trying to use a Matrix object inside one of my class. I have #include 
dMatrix.h" in my source file. However, I got the following compilation errors

.../liboctave/DiagArray2.h:35: lo-error.h: No such file or directory
.../liboctave/data-conv.h:41: #error "No 2 byte integer type found!"
.../liboctave/data-conv.h:49: #error "No 4 byte integer type found!"

I also tried using "include <octave/oct.h>" instead, but the compiler doesn't 
know what the prefix `octave' is. 

Thank you very much,

Suttipan Limanond.