Mac OS X : SDL_ttf linking error

Hi all,
Under Mac OS X Intel ( 10.4 ), when trying to link to the
SDL_ttf.framework I am getting the following error…
/usr/bin/ld:Undefined symbols:
_TTF_CloseFont
_TTF_Init
_TTF_Quit

These seem to be quite fundamental omissions or am I doing something wrong?

Thanks,

Dominique Louis.