[Bug c/18382] New: define __pic__ and/or __PIC__ in c-cppbuiltins.c instead of scattershot in target config

["zack at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

The __pic__ and __PIC__ macros are currently defined scattershot in target
configuration files, some using specs %{pic:-D...} notation and some using
builtin_define() from TARGET_*_CPP_BUILTINS.  It would be better to define
them in a consistent fashion (__pic__ only if -fpic, both if -fPIC) in
c-cppbuiltin.c.  See bug 6123 for examples of what this would help.

I'm tasking myself with this, but I'm not going to do it until 4.1.

-- 
           Summary: define __pic__ and/or __PIC__ in c-cppbuiltins.c instead
                    of scattershot in target config
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: c
        AssignedTo: zack at gcc dot gnu dot org
        ReportedBy: zack at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: *-*-*
OtherBugsDependingO 6123
             nThis:


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18382