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      1  1.12  mrg # Copyright (C) 2002-2022 Free Software Foundation, Inc.
      2   1.1  mrg #
      3   1.1  mrg # This file is part of GCC.
      4   1.1  mrg #
      5   1.1  mrg # GCC is free software; you can redistribute it and/or modify
      6   1.1  mrg # it under the terms of the GNU General Public License as published by
      7   1.1  mrg # the Free Software Foundation; either version 3, or (at your option)
      8   1.1  mrg # any later version.
      9   1.1  mrg #
     10   1.1  mrg # GCC is distributed in the hope that it will be useful,
     11   1.1  mrg # but WITHOUT ANY WARRANTY; without even the implied warranty of
     12   1.1  mrg # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13   1.1  mrg # GNU General Public License for more details.
     14   1.1  mrg #
     15   1.1  mrg # You should have received a copy of the GNU General Public License
     16   1.1  mrg # along with GCC; see the file COPYING3.  If not see
     17   1.1  mrg # <http://www.gnu.org/licenses/>.
     18   1.1  mrg 
     19   1.1  mrg # On Debian, Ubuntu and other derivative distributions, the 32bit libraries
     20   1.1  mrg # are found in /lib32 and /usr/lib32, /lib64 and /usr/lib64 are symlinks to
     21   1.1  mrg # /lib and /usr/lib, while other distributions install libraries into /lib64
     22   1.1  mrg # and /usr/lib64.  The LSB does not enforce the use of /lib64 and /usr/lib64,
     23   1.1  mrg # it doesn't tell anything about the 32bit libraries on those systems.  Set
     24   1.1  mrg # MULTILIB_OSDIRNAMES according to what is found on the target.
     25   1.1  mrg 
     26   1.3  mrg # To support i386, x86-64 and x32 libraries, the directory structrue
     27   1.3  mrg # should be:
     28   1.3  mrg #
     29   1.3  mrg # 	/lib has i386 libraries.
     30   1.3  mrg # 	/lib64 has x86-64 libraries.
     31   1.3  mrg # 	/libx32 has x32 libraries.
     32   1.3  mrg #
     33   1.3  mrg comma=,
     34   1.3  mrg MULTILIB_OPTIONS    = $(subst $(comma),/,$(TM_MULTILIB_CONFIG))
     35   1.3  mrg MULTILIB_DIRNAMES   = $(patsubst m%, %, $(subst /, ,$(MULTILIB_OPTIONS)))
     36   1.3  mrg MULTILIB_OSDIRNAMES = m64=../lib64$(call if_multiarch,:x86_64-linux-gnu)
     37   1.3  mrg MULTILIB_OSDIRNAMES+= m32=$(if $(wildcard $(shell echo $(SYSTEM_HEADER_DIR))/../../usr/lib32),../lib32,../lib)$(call if_multiarch,:i386-linux-gnu)
     38   1.3  mrg MULTILIB_OSDIRNAMES+= mx32=../libx32$(call if_multiarch,:x86_64-linux-gnux32)
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