Error "undefined reference to"

Hi !

I am getting the error when I try to compile the project after adding a new .cpp file

and .h header file........

I have add these files in say ABC folder and made entry in makefile.am.......

But when I compile project it give error as follow :

Code:

../src/.libs/libProject.so: undefined reference to `ABC::ABC()' ../src/.libs/libProject.so: undefined reference to `ABC::GetFileName(QString)'

The constructor of this class and function are called from file XYZ.cpp in folder

MAP.......

I have include ABC.h in XYZ.cpp and when compile gives above error.......

Help me......

Bargi