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[ARC] Add multilib support for linux targets

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We used to build baremetal (AKA Elf32) multilibbed toolchains for years
now but never made that for Linux targets since there were problems with
uClibc n multilib setup. Now with help of Crosstool-NG it is finally
possible to create uClibc-based multilibbed toolchains and so we add
relevant CPUs for multilib in case of configuration for "arc*-*-linux*".

This will be essentially useful for glibc-based multilibbbed toolchains
in the future.

gcc/
2018-05-16  Alexey Brodkin <abrodkin@synopsys.com>

        * config.gcc: Add arc/t-multilib-linux to tmake_file for
        arc*-*-linux*.
        * config/arc/t-multilib-linux: Specify MULTILIB_OPTIONS and
        MULTILIB_DIRNAMES

From-SVN: r260434
This commit is contained in:
Alexey Brodkin 2018-05-21 09:56:57 +00:00 committed by Claudiu Zissulescu
parent 67e9518e20
commit 825f9d0b75
3 changed files with 33 additions and 1 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2018-05-21 Alexey Brodkin <abrodkin@synopsys.com>
* config.gcc: Add arc/t-multilib-linux to tmake_file for
arc*-*-linux*.
* config/arc/t-multilib-linux: Specify MULTILIB_OPTIONS and
MULTILIB_DIRNAMES
2018-05-20 Chung-Ju Wu <jasonwucj@gmail.com>
* config/nds32/constraints.md (S): New constraint.

2
gcc/config.gcc
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@ -1061,7 +1061,7 @@ arc*-*-elf*)
;;
arc*-*-linux*)
tm_file="arc/arc-arch.h dbxelf.h elfos.h gnu-user.h linux.h linux-android.h glibc-stdint.h arc/linux.h ${tm_file}"
tmake_file="${tmake_file} arc/t-arc"
tmake_file="${tmake_file} arc/t-multilib-linux arc/t-arc"
extra_gcc_objs="driver-arc.o"
if test "x$with_cpu" != x; then
tm_defines="${tm_defines} TARGET_CPU_BUILD=PROCESSOR_$with_cpu"

25
gcc/config/arc/t-multilib-linux Normal file
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@ -0,0 +1,25 @@
# Copyright (C) 2018 Free Software Foundation, Inc.
#
# 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/>.
MULTILIB_OPTIONS = mcpu=hs/mcpu=archs/mcpu=hs38/mcpu=hs38_linux/mcpu=arc700/mcpu=nps400
MULTILIB_DIRNAMES = hs archs hs38 hs38_linux arc700 nps400
# Aliases:
MULTILIB_MATCHES += mcpu?arc700=mA7
MULTILIB_MATCHES += mcpu?arc700=mARC700