[Bug fortran/36309] New: gfrotran and cc1 error

["kih at mail dot nerc-essc dot ac dot uk" <gcc-bugzilla at gcc dot gnu dot org>]

When invoking gfortran to compile some fortran code with C preprocessor
commands in it and using the .F file extension to ensure that the code is
passed though the C pre-processor and error occurs with cc1

The command is:

gfortran -c -g -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -fno-underscoring
-DNOUNIRAS -DNONAMELISTS -I../f77_param filterpl.F

and the error is:

cc1: error: unrecognized command line option "-fno-underscoring"

This error did not occur when using an older gfortran version. cpp won't
recognise "-fno-underscoring" but the old gfortran presumably did not pass
this to cpp whereas the newer version does.

I have a workround which involves invoking cpp seperately on the file excluding
the "-fno-underscoring" and the compiling the output from this but it would be
good to have the old functionality back.

Kevin


-- 
           Summary: gfrotran and cc1 error
           Product: gcc
           Version: 4.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: kih at mail dot nerc-essc dot ac dot uk


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36309