* config.gcc (ia64*-*-hpux*): Add ia64-c.o to c_target and
cxx_target.
* config/ia64/hpux.h (REGISTER_TARGET_PRAGMAS): Register pragma
handling routine for builtin pragma.
* config/ia64/ia64-protos.h (ia64_hpux_handle_builtin_pragma):
Registered pragma handling routine.
* ia64-c.c (ia64_hpux_handle_builtin_pragma): Ditto.
(ia64_hpux_add_pragma_builtin) New subroutine used by above.
If builtin pragma seen for math routine and C89 conformance is
requested use different math function in order to set errno.
* t-ia64 (ia64-c.o): Add new rule for new file.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@56767 138bc75d-0d04-0410-961f-82ee72b054a4