(and it'd be useful to have it backported to the 13 branch)
Samuel Thibault, le sam. 06 mai 2023 13:50:36 +0200, a ecrit:
> We need the multilib paths in gcc to find e.g. glibc crt files on
> Debian. This is essentially based on t-linux64 version.
>
> gcc/ChangeLog:
>
> * gcc/config/i386/t-gnu64: New file.
> * gcc/config.gcc [x86_64-*-gnu*): Add i386/t-gnu64 to
> tmake_file.
>
> diff --git a/gcc/config.gcc b/gcc/config.gcc
> index 671c7e3b018..6b1939b9f09 100644
> --- a/gcc/config.gcc
> +++ b/gcc/config.gcc
> @@ -5828,6 +5828,9 @@ case ${target} in
> visium-*-*)
> target_cpu_default2="TARGET_CPU_$with_cpu"
> ;;
> + x86_64-*-gnu*)
> + tmake_file="$tmake_file i386/t-gnu64"
> + ;;
> esac
>
> t=
> diff --git a/gcc/config/i386/t-gnu64 b/gcc/config/i386/t-gnu64
> index e69de29bb2d..23ee6823d65 100644
> --- a/gcc/config/i386/t-gnu64
> +++ b/gcc/config/i386/t-gnu64
> @@ -0,0 +1,38 @@
> +# Copyright (C) 2002-2023 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/>.
> +
> +# On Debian, Ubuntu and other derivative distributions, the 32bit libraries
> +# are found in /lib32 and /usr/lib32, /lib64 and /usr/lib64 are symlinks to
> +# /lib and /usr/lib, while other distributions install libraries into /lib64
> +# and /usr/lib64. The LSB does not enforce the use of /lib64 and /usr/lib64,
> +# it doesn't tell anything about the 32bit libraries on those systems. Set
> +# MULTILIB_OSDIRNAMES according to what is found on the target.
> +
> +# To support i386, x86-64 and x32 libraries, the directory structrue
> +# should be:
> +#
> +# /lib has i386 libraries.
> +# /lib64 has x86-64 libraries.
> +# /libx32 has x32 libraries.
> +#
> +comma=,
> +MULTILIB_OPTIONS = $(subst $(comma),/,$(TM_MULTILIB_CONFIG))
> +MULTILIB_DIRNAMES = $(patsubst m%, %, $(subst /, ,$(MULTILIB_OPTIONS)))
> +MULTILIB_OSDIRNAMES = m64=../lib64$(call if_multiarch,:x86_64-gnu)
> +MULTILIB_OSDIRNAMES+= m32=$(if $(wildcard $(shell echo
> $(SYSTEM_HEADER_DIR))/../../usr/lib32),../lib32,../lib)$(call
> if_multiarch,:i386-gnu)
> +MULTILIB_OSDIRNAMES+= mx32=../libx32$(call if_multiarch,:x86_64-gnux32)
--
Samuel
---
Pour une évaluation indépendante, transparente et rigoureuse !
Je soutiens la Commission d'Évaluation de l'Inria.
