1 # Copyright (C) 2002-2021 Free Software Foundation, Inc.
3 # This file is part of GCC.
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)
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.
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/>.
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.
26 # To support i386, x86-64 and x32 libraries, the directory structrue
29 # /lib has i386 libraries.
30 # /lib64 has x86-64 libraries.
31 # /libx32 has x32 libraries.
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)