[Bug fortran/47175] New: no predefined macros __amd64, __amd64__, __x86_64 __x86_64__ in prepocessor

["jan.rauberg at gmx dot de" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47175

           Summary: no predefined macros __amd64, __amd64__, __x86_64
                    __x86_64__ in prepocessor
           Product: gcc
           Version: 4.4.5
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: jan.rauberg@gmx.de


Matlab and probably other software uses the predefined macros to check for the
current platform to enable long pointer or not. I have found that the macros
above are no more in gfortran 4.4 and higher. The only way to check for the
right platform is the __LP64__ macro which seems not to be used on other
compiles like sunf90. It takes me some hours to find why a Matlab mex file
crashes immediately after calling. Whith gcc these macros are available, why
not whith gfortran?

Jan