| # -*- shell-script -*- |
| # Copyright (C) 2011-2022 Free Software Foundation, Inc. |
| |
| # This program 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 2 of the License, or |
| # (at your option) any later version. |
| # |
| # This program 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 this program; if not, write to the Free Software |
| # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| |
| # This is the target specific configuration file. This is invoked by the |
| # autoconf generated configure script. Putting it in a separate shell file |
| # lets us skip running autoconf when modifying target specific information. |
| |
| # This file switches on the shell variable ${target}, and sets the |
| # following shell variables: |
| # config_path An ordered list of directories to search for |
| # sources and headers. This is relative to the |
| # config subdirectory of the source tree. |
| # XCFLAGS Add extra compile flags to use. |
| # XLDFLAGS Add extra link flags to use. |
| |
| # Optimize TLS usage by avoiding the overhead of dynamic allocation. |
| if test "$gcc_cv_have_tls" = yes ; then |
| case "${target}" in |
| |
| *-*-musl*) |
| ;; |
| |
| # For x86, we use slots in the TCB head for most of our TLS. |
| # The setup of those slots in beginTransaction can afford to |
| # use the global-dynamic model. |
| i[456]86-*-linux* | x86_64-*-linux*) |
| ;; |
| |
| *-*-linux*) |
| XCFLAGS="${XCFLAGS} -ftls-model=initial-exec" |
| ;; |
| |
| esac |
| fi |
| |
| # Map the target cpu to an ARCH sub-directory. At the same time, |
| # work out any special compilation flags as necessary. |
| case "${target_cpu}" in |
| aarch64*) ARCH=aarch64 ;; |
| alpha*) ARCH=alpha ;; |
| rs6000 | powerpc*) |
| XCFLAGS="${XCFLAGS} -mhtm" |
| ARCH=powerpc |
| ;; |
| |
| arm*) ARCH=arm ;; |
| |
| i[3456]86 | x86_64) |
| cat > conftestx.c <<EOF |
| #ifndef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 |
| #error need -march=i486 |
| #endif |
| EOF |
| if ${CC} ${CFLAGS} -E conftestx.c > /dev/null 2>&1; then |
| : |
| else |
| if test "${target_cpu}" = x86_64; then |
| XCFLAGS="${XCFLAGS} -march=i486 -mtune=generic" |
| else |
| XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}" |
| fi |
| XCFLAGS="${XCFLAGS} -fomit-frame-pointer" |
| fi |
| rm -f conftestx.c |
| XCFLAGS="${XCFLAGS} -mrtm" |
| ARCH=x86 |
| ;; |
| |
| sh*) ARCH=sh ;; |
| |
| sparc) |
| case " ${CC} ${CFLAGS} " in |
| *" -m64 "*) |
| ;; |
| *) |
| if test -z "$with_cpu"; then |
| XCFLAGS="${XCFLAGS} -mcpu=v9" |
| fi |
| esac |
| ARCH=sparc |
| ;; |
| |
| sparc64|sparcv9) |
| case " ${CC} ${CFLAGS} " in |
| *" -m32 "*) |
| XCFLAGS="${XCFLAGS} -mcpu=v9" |
| ;; |
| *" -m64 "*) |
| ;; |
| *) |
| if test "x$with_cpu" = xv8; then |
| XCFLAGS="${XCFLAGS} -mcpu=v9" |
| fi |
| ;; |
| esac |
| ARCH=sparc |
| ;; |
| |
| s390|s390x) |
| XCFLAGS="${XCFLAGS} -mzarch -mhtm" |
| ARCH=s390 |
| ;; |
| |
| *) |
| ARCH="${target_cpu}" |
| ;; |
| esac |
| |
| # For the benefit of top-level configure, determine if the cpu is supported. |
| test -d ${srcdir}/config/$ARCH || UNSUPPORTED=1 |
| |
| # Since we require POSIX threads, assume a POSIX system by default. |
| config_path="$ARCH posix generic" |
| |
| # Other system configury |
| case "${target}" in |
| *-*-linux* | *-*-uclinux*) |
| if test "$enable_linux_futex" = yes; then |
| config_path="linux/$ARCH linux $config_path" |
| fi |
| ;; |
| |
| powerpc*-*-aix* | rs6000-*-aix*) |
| # The system ought to be supported, but sjlj.S has not been ported. |
| UNSUPPORTED=1 |
| ;; |
| |
| *-*-gnu* | *-*-k*bsd*-gnu \ |
| | *-*-netbsd* | *-*-freebsd* | *-*-openbsd* \ |
| | *-*-solaris2* | *-*-sysv4* | *-*-hpux11* \ |
| | *-*-aix* | *-*-dragonfly*) |
| # POSIX system. The OS is supported. |
| ;; |
| |
| *-*-darwin*) |
| # The OS is supported, but we need dynamic lookup to support undefined |
| # weak symbols at link-time. |
| XLDFLAGS="${XLDFLAGS} -Wl,-undefined,dynamic_lookup" |
| ;; |
| |
| *) # Non-POSIX, or embedded system |
| UNSUPPORTED=1 |
| ;; |
| esac |