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AC_DEFUN([AC_LINUX],
[
AC_LINUX_DIR()
AC_LINUX_SRCARCH()
])
AC_DEFUN([AS_TRY_LINUX_DIR],
[AC_MSG_CHECKING(for Linux in $1)
if test -f "$1/Makefile" ; then
result=yes
$2
else
result="not found"
$3
fi
AC_MSG_RESULT($result)
])
AC_DEFUN([AC_LINUX_DIR],
[
AC_ARG_WITH([linuxdir],
[AC_HELP_STRING([--with-linuxdir=DIR],
[specify path to Linux source directory])],
[LINUX_DIR="${withval}"],
[LINUX_DIR=default])
dnl if specified, use the specified one
if test "${LINUX_DIR}" != "default" ; then
AS_TRY_LINUX_DIR([${LINUX_DIR}], , AC_MSG_ERROR([Linux dir not found]) )
fi
dnl if not specified, first try with previously set LINUX_KERNEL_RELEASE
if test "${LINUX_DIR}" = "default" ; then
dir="/lib/modules/$LINUX_KERNEL_RELEASE/build";
AS_TRY_LINUX_DIR([${dir}], [LINUX_DIR=${dir}], )
fi
dnl next try using the kernel source dir
if test "${LINUX_DIR}" = "default" ; then
dir="/usr/src/linux-$LINUX_KERNEL_RELEASE";
AS_TRY_LINUX_DIR([${dir}], [LINUX_DIR=${dir}], )
fi
dnl then try a common default of /usr/src/linux
if test "${LINUX_DIR}" = "default" ; then
dir="/usr/src/linux";
AS_TRY_LINUX_DIR([${dir}], [LINUX_DIR=${dir}], )
fi
dnl if still nothing found, fail
if test "${LINUX_DIR}" = "default" ; then
AC_MSG_WARN([Linux source directory not found])
fi
AC_SUBST(LINUX_DIR)
])
AC_DEFUN([AC_LINUX_SRCARCH],[
AC_MSG_CHECKING(for linux SRCARCH)
case "${host}" in
i[[3456]]86-*) LINUX_SRCARCH=x86;;
x86_64-*) LINUX_SRCARCH=x86;;
powerpc*-*) LINUX_SRCARCH=powerpc;;
s390*-*) LINUX_SRCARCH=s390;;
arm*-*) LINUX_SRCARCH=arm;;
*) AC_MSG_ERROR([architecture ${host} not supported]);;
esac
AC_MSG_RESULT(${LINUX_SRCARCH})
AC_SUBST(LINUX_SRCARCH)
])
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