wolfssl/m4/ax_linuxkm.m4

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# ax_linuxkm.m4 -- macros for getting attributes of default configured kernel
#
# Copyright (C) 2006-2020 wolfSSL Inc.
#
# This file is part of wolfSSL.
#
# wolfSSL 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.
#
# wolfSSL 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 02110-1335, USA
AC_DEFUN([AC_PATH_DEFAULT_KERNEL_SOURCE],
[
AC_MSG_CHECKING([for default kernel build root])
if test -d /lib/modules/`uname -r`/build/.config; then
DEFAULT_KERNEL_ROOT=/lib/modules/`uname -r`/build
AC_MSG_RESULT([$DEFAULT_KERNEL_ROOT])
elif test -r /usr/src/linux/.config; then
DEFAULT_KERNEL_ROOT=/usr/src/linux
AC_MSG_RESULT([$DEFAULT_KERNEL_ROOT])
else
AC_MSG_RESULT([no default configured kernel found])
fi
])
AC_DEFUN([AC_DEFAULT_KERNEL_ARCH],
[
AC_REQUIRE([AC_PROG_AWK])
AC_MSG_CHECKING([for default kernel arch])
if test -f ${KERNEL_ROOT}/.config; then
# "# Linux/x86 5.8.1-gentoo Kernel Configuration"
DEFAULT_KERNEL_ARCH=`$AWK '/^# Linux/\
{split($[]2,arch_fields,"/"); print arch_fields[[2]]; exit(0);}' ${KERNEL_ROOT}/.config`
fi
if test -n "$DEFAULT_KERNEL_ARCH"; then
AC_MSG_RESULT([$DEFAULT_KERNEL_ARCH])
else
AC_MSG_RESULT([no default configured kernel arch found])
fi
])