gcc/config/i386/t-linux64

   1 # Copyright (C) 2002-2024 Free Software Foundation, Inc.
   2 #
   3 # This file is part of GCC.
   4 #
   5 # GCC is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3, or (at your option)
   8 # any later version.
   9 #
  10 # GCC is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with GCC; see the file COPYING3.  If not see
  17 # <http://www.gnu.org/licenses/>.
  18
  19 # On Debian, Ubuntu and other derivative distributions, the 32bit libraries
  20 # are found in /lib32 and /usr/lib32, /lib64 and /usr/lib64 are symlinks to
  21 # /lib and /usr/lib, while other distributions install libraries into /lib64
  22 # and /usr/lib64.  The LSB does not enforce the use of /lib64 and /usr/lib64,
  23 # it doesn't tell anything about the 32bit libraries on those systems.  Set
  24 # MULTILIB_OSDIRNAMES according to what is found on the target.
  25
  26 # To support i386, x86-64 and x32 libraries, the directory structrue
  27 # should be:
  28 #
  29 #       /lib has i386 libraries.
  30 #       /lib64 has x86-64 libraries.
  31 #       /libx32 has x32 libraries.
  32 #
  33 comma=,
  34 MULTILIB_OPTIONS    = $(subst $(comma),/,$(TM_MULTILIB_CONFIG))
  35 MULTILIB_DIRNAMES   = $(patsubst m%, %, $(subst /, ,$(MULTILIB_OPTIONS)))
  36 MULTILIB_OSDIRNAMES = m64=../lib64$(call if_multiarch,:x86_64-linux-gnu)
  37 MULTILIB_OSDIRNAMES+= m32=$(if $(wildcard $(shell echo $(SYSTEM_HEADER_DIR))/../../usr/lib32),../lib32,../lib)$(call if_multiarch,:i386-linux-gnu)
  38 MULTILIB_OSDIRNAMES+= mx32=../libx32$(call if_multiarch,:x86_64-linux-gnux32)