[Bug target/81170] powerpc*-linux --enable-default-pie chooses incorrect startup files

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81170

--- Comment #4 from Alan Modra <amodra at gcc dot gnu.org> ---
Author: amodra
Date: Tue Aug 29 08:25:17 2017
New Revision: 251404

URL: https://gcc.gnu.org/viewcvs?rev=251404&root=gcc&view=rev
Log:
PR driver/81523: Make -static override -pie

-static and -pie together behave differently depending on whether GCC is
configured with --enable-default-pie.  On x86, "-static -pie" fails to
create executable when --enable-default-pie isn't used, but creates a
static executable when --enable-default-pie is used.  This patch makes
-static completely override -pie to create a static executable, regardless
if --enable-default-pie is used to configure GCC.

        PR target/81170
        PR target/81295
        PR driver/81523
        * gcc.c (NO_PIE_SPEC): Delete.
        (PIE_SPEC): Define as !no-pie/pie.  Move static|shared|r
        exclusion..
        (LINK_PIE_SPEC): ..to here.
        (LINK_COMMAND_SPEC): Support -no-pie.
        * config/gnu-user.h (GNU_USER_TARGET_STARTFILE_SPEC): Correct
        chain of crtbegin*.o selection, update for PIE_SPEC changes and
        format.
        (GNU_USER_TARGET_ENDFILE_SPEC): Similarly.
        * config/sol2.h (STARTFILE_CRTBEGIN_SPEC): Similarly.
        (ENDFILE_CRTEND_SPEC): Similarly.

Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/config/gnu-user.h
    branches/gcc-6-branch/gcc/config/sol2.h
    branches/gcc-6-branch/gcc/gcc.c