Float_t does not name a type


I’m using a makefile to build an executable from a C++ macro.
When I try to make the executable, it tells me “Float_t does not name a type”.

Do you know which header I have to include in the root macro to precise the meaning of Float_t to the makefile ???

Thanks a lot.

#if !defined (__CINT__) || defined (__MAKECINT__)
#include "Rtypes.h"