On 27/10/18 05:37, Stafford Horne wrote: > +++ b/gcc/config/or1k/linux.h > @@ -0,0 +1,44 @@ > +/* Linux Definitions for OpenRISC. > + Copyright (C) 2018 Free Software Foundation, Inc. > + Contributed by Stafford Horne. > + > + This file is part of GCC. > + > + GCC is free software; you can redistribute it and/or modify it > + under the terms of the GNU General Public License as published > + by the Free Software Foundation; either version 3, or (at your > + option) any later version. > + > + GCC is distributed in the hope that it will be useful, but WITHOUT > + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY > + or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public > + License for more details. > + > + You should have received a copy of the GNU General Public License > + along with GCC; see the file COPYING3. If not see > + <http://www.gnu.org/licenses/>. */ > + > +#ifndef GCC_OR1K_LINUX_H > +#define GCC_OR1K_LINUX_H > + > +/* elfos.h should have already been included. Now just override > + any conflicting definitions and add any extras. */ > + > +#define TARGET_OS_CPP_BUILTINS() \ > + GNU_USER_TARGET_OS_CPP_BUILTINS () > + > +#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-or1k.so.1" > + > +#undef MUSL_DYNAMIC_LINKER > +#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-or1k.so.1" > + > +#undef LINK_SPEC > +#define LINK_SPEC "%{h*} \ > + %{static:-Bstatic} \ > + %{shared:-shared} \ > + %{symbolic:-Bsymbolic} \ > + %{!static: \ > + %{rdynamic:-export-dynamic} \ > + %{!shared:-dynamic-linker " GNU_USER_DYNAMIC_LINKER "}}" > + > +#endif /* GCC_OR1K_LINUX_H */
note that because of the -static-pie mess each target needs a more complicated LINK_SPEC now. i think there could be a generic LINK_SPEC in config/linux.h or config/gnu-user.h that works for simple targets (the start file spec is already there) so this complex logic is not repeated everywhere. or even do the -no-dynamic-linker logic in LINK_PIE_SPEC in gcc.c for all targets, not just linux, so backends don't need to do anything to get static-pie to work.
