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dnl SYNOPSIS
dnl
dnl AX_CHECK_MODPROBE_QUIET()
dnl
dnl DESCRIPTION
dnl
dnl Check for a modprobe+whether it appears to handle the -q option
dnl
dnl LICENSE
dnl
dnl Copyright (c) 2016 Phil Whineray <phil@firehol.org>
dnl
dnl This program is free software; you can redistribute it and/or modify it
dnl under the terms of the GNU General Public License as published by the
dnl Free Software Foundation; either version 2 of the License, or (at your
dnl option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful, but
dnl WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
dnl Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License along
dnl with this program. If not, see <http://www.gnu.org/licenses/>.
dnl
dnl As a special exception, the respective Autoconf Macro's copyright owner
dnl gives unlimited permission to copy, distribute and modify the configure
dnl scripts that are the output of Autoconf when processing the Macro. You
dnl need not follow the terms of the GNU General Public License when using
dnl or distributing such scripts, even though portions of the text of the
dnl Macro appear in them. The GNU General Public License (GPL) does govern
dnl all other use of the material that constitutes the Autoconf Macro.
dnl
dnl This special exception to the GPL applies to versions of the Autoconf
dnl Macro released by the Autoconf Archive. When you make and distribute a
dnl modified version of the Autoconf Macro, you may extend this special
dnl exception to the GPL to apply to your modified version as well.
AC_DEFUN([AX_CHECK_MODPROBE_QUIET],
[
AC_PATH_PROG([MODPROBE], [modprobe], [], [])
AC_CACHE_CHECK([whether ]MODPROBE[ has working -q option], [ac_cv_modprobe_q_opt],
[
ac_cv_modprobe_q_opt=no
if test -n "$MODPROBE"; then
echo "Trying '$MODPROBE -q -n made-up-name'" >&AS_MESSAGE_LOG_FD
$MODPROBE -q -n made-up-name-nonexistend > conftest.out 2>&1
if ! test -s conftest.out; then
ac_cv_modprobe_q_opt=yes
fi
cat conftest.out >&AS_MESSAGE_LOG_FD
rm -f conftest.out
fi
])
AS_IF([test "x$ac_cv_modprobe_q_opt" = "xyes"],[
MODPROBE="$MODPROBE -q"
])
])
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