[Bug target/65286] When building on powerpc64le-unknown-linux-gnu, --disable-multilib must be used

[amodra at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65286

--- Comment #3 from Alan Modra <amodra at gcc dot gnu.org> ---
Author: amodra
Date: Mon Mar  9 23:18:57 2015
New Revision: 221288

URL: https://gcc.gnu.org/viewcvs?rev=221288&root=gcc&view=rev
Log:
    PR target/65286
    * config.gcc (powerpc*-*-linux*): Arrange for powerpc64le-linux
    to be single-arch by default.  Set cpu_is_64bit for powerpc64
    given --with-cpu=native.
    * config/rs6000/t-fprules: Do not set default MULTILIB vars.
    * config/rs6000/t-linux (MULTIARCH_DIRNAME): Support powerpc64
    and powerpc64le.
    * config/rs6000/linux64.h (SUBSUBTARGET_OVERRIDE_OPTIONS): Test
    rs6000_isa_flags rather than TARGET_64BIT.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config.gcc
    trunk/gcc/config/rs6000/linux64.h
    trunk/gcc/config/rs6000/t-fprules
    trunk/gcc/config/rs6000/t-linux