[C con Clase] Como corrijo los siguientes warning y errores o porque me esta dando estos errores.

[Jose Sanchez]

[jose en localhost library]$ make
gcc -fPIC -g -c -Wall -DHEIUNIX iobase.cpp
In file included from ../headers/hei.h:11,
                 from ../headers/stdafx.h:18,
                 from iobase.cpp:1:
../headers/defs.h:32:1: warning: "NULL" redefined
In file included from /usr/include/stdlib.h:33,
                 from ../headers/stdafx.h:17,
                 from iobase.cpp:1:
/usr/lib/gcc/i386-redhat-linux/4.1.2/include/stddef.h:400:1: warning: this
is the location of the previous definition
../headers/iobase.h:13: error: extra qualification ‘CModule::’ on member
‘IsSupported’
iobase.cpp: In constructor ‘CEbcIO::CEbcIO(HEIDevice*, BOOL)’:
iobase.cpp:180: warning: unused variable ‘ModuleCount’
make: *** [iobase.o] Error 1
[jose en localhost library]$
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