2 # Copyright (C) 2011, 2012 Free Software Foundation, Inc.
4 # This program is free software; you can redistribute it and/or modify
5 # it under the terms of the GNU General Public License as published by
6 # the Free Software Foundation; either version 2 of the License, or
7 # (at your option) any later version.
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program; if not, write to the Free Software
16 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 # This is the target specific configuration file. This is invoked by the
19 # autoconf generated configure script. Putting it in a separate shell file
20 # lets us skip running autoconf when modifying target specific information.
22 # This file switches on the shell variable ${target}, and sets the
23 # following shell variables:
24 # config_path An ordered list of directories to search for
25 # sources and headers. This is relative to the
26 # config subdirectory of the source tree.
27 # XCFLAGS Add extra compile flags to use.
28 # XLDFLAGS Add extra link flags to use.
30 # Optimize TLS usage by avoiding the overhead of dynamic allocation.
31 if test "$gcc_cv_have_tls" = yes ; then
34 # For x86, we use slots in the TCB head for most of our TLS.
35 # The setup of those slots in beginTransaction can afford to
36 # use the global-dynamic model.
37 i[456]86-*-linux* | x86_64-*-linux*)
41 XCFLAGS="${XCFLAGS} -ftls-model=initial-exec"
46 # Map the target cpu to an ARCH sub-directory. At the same time,
47 # work out any special compilation flags as necessary.
48 case "${target_cpu}" in
50 rs6000 | powerpc*) ARCH=powerpc ;;
55 case " ${CC} ${CFLAGS} " in
59 if test -z "$with_arch"; then
60 XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}"
61 XCFLAGS="${XCFLAGS} -fomit-frame-pointer"
70 case " ${CC} ${CFLAGS} " in
74 if test -z "$with_cpu"; then
75 XCFLAGS="${XCFLAGS} -mcpu=v9"
82 case " ${CC} ${CFLAGS} " in
84 XCFLAGS="${XCFLAGS} -mcpu=v9"
89 if test "x$with_cpu" = xv8; then
90 XCFLAGS="${XCFLAGS} -mcpu=v9"
98 case " ${CC} ${CFLAGS} " in
100 XCFLAGS="${XCFLAGS} -march=i486 -mtune=i686"
101 XCFLAGS="${XCFLAGS} -fomit-frame-pointer"
112 # For the benefit of top-level configure, determine if the cpu is supported.
113 test -d ${srcdir}/config/$ARCH || UNSUPPORTED=1
115 # Since we require POSIX threads, assume a POSIX system by default.
116 config_path="$ARCH posix generic"
118 # Other system configury
121 if test "$enable_linux_futex" = yes; then
122 config_path="linux/$ARCH linux $config_path"
126 powerpc*-*-aix* | rs6000-*-aix*)
127 # The system ought to be supported, but sjlj.S has not been ported.
131 *-*-gnu* | *-*-k*bsd*-gnu \
132 | *-*-netbsd* | *-*-freebsd* | *-*-openbsd* \
133 | *-*-solaris2* | *-*-sysv4* | *-*-hpux11* \
134 | *-*-darwin* | *-*-aix*)
135 # POSIX system. The OS is supported.
138 *) # Non-POSIX, or embedded system