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# Copyright (C) 2010-2022 Free Software Foundation, Inc.
# This file is part of GCC.
# GCC 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 3, or (at your option) any
# later version.
# GCC 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 GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
dnl @synopsis GCC_AC_ENABLE_DECIMAL_FLOAT([target triplet])
dnl
dnl Enable C extension for decimal float if target supports it.
dnl
dnl @author Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
AC_DEFUN([GCC_AC_ENABLE_DECIMAL_FLOAT],
[
AC_ARG_ENABLE(decimal-float,
[ --enable-decimal-float={no,yes,bid,dpd}
enable decimal float extension to C. Selecting 'bid'
or 'dpd' choses which decimal floating point format
to use],
[
case $enable_decimal_float in
yes | no | bid | dpd) default_decimal_float=$enable_decimal_float ;;
*) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
esac
],
[
case $1 in
aarch64* | \
powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux* | \
i?86*-*-elfiamcu | i?86*-*-gnu* | x86_64*-*-gnu* | \
i?86*-*-mingw* | x86_64*-*-mingw* | \
i?86*-*-cygwin* | x86_64*-*-cygwin*)
enable_decimal_float=yes
;;
*)
AC_MSG_WARN([decimal float is not supported for this target, ignored])
enable_decimal_float=no
;;
esac
])
# x86's use BID format instead of DPD
case x$enable_decimal_float in
xyes)
case $1 in
aarch64* | i?86*-*-* | x86_64*-*-*)
enable_decimal_float=bid
;;
*)
enable_decimal_float=dpd
;;
esac
default_decimal_float=$enable_decimal_float
;;
xno)
# ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
# dependency on libdecnumber.
default_decimal_float=dpd
;;
esac
AC_SUBST(enable_decimal_float)
])
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