Fixed-Point Data Types from MATLAB 2013b

I'm generating a code using MATLAB R2013B and I got this message inside my code, I already have a fixed point data type

#if ( UCHAR_MAX != (0xFFU) ) || ( SCHAR_MAX != (0x7F) )
#error "Code was generated for compiler with different sized uchar/char. Consider adjusting Emulation Hardware word size settings on the Hardware Implementation pane to match your compiler word sizes as defined in the compiler's limits.h header file. Alternatively, you can select 'None' for Emulation Hardware and select the 'Enable portable word sizes' option for ERT based targets, which will disable the preprocessor word size checks."
#endif

#if ( USHRT_MAX != (0xFFFFU) ) || ( SHRT_MAX != (0x7FFF) )
#error "Code was generated for compiler with different sized ushort/short. Consider adjusting Emulation Hardware word size settings on the Hardware Implementation pane to match your compiler word sizes as defined in the compilers limits.h header file. Alternatively, you can select 'None' for Emulation Hardware and select the 'Enable portable word sizes' option for ERT based targets, this will disable the preprocessor word size checks."
#endif

#if ( UINT_MAX != (0xFFFFFFFFU) ) || ( INT_MAX != (0x7FFFFFFF) )
#error "Code was generated for compiler with different sized uint/int. Consider adjusting Emulation Hardware word size settings on the Hardware Implementation pane to match your compiler word sizes as defined in the compilers limits.h header file. Alternatively, you can select 'None' for Emulation Hardware and select the 'Enable portable word sizes' option for ERT based targets, this will disable the preprocessor word size checks."
#endif

#if ( ULONG_MAX != (0xFFFFFFFFU) ) || ( LONG_MAX != (0x7FFFFFFF) )
#error "Code was generated for compiler with different sized ulong/long. Consider adjusting Emulation Hardware word size settings on the Hardware Implementation pane to match your compiler word sizes as defined in the compilers limits.h header file. Alternatively, you can select 'None' for Emulation Hardware and select the 'Enable portable word sizes' option for ERT based targets, this will disable the preprocessor word size checks."
#endif

What can be the root cause of it? How can this message be avoided?