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34 dnl CHECK_LINUX(OPTION, VERSION, VARIABLE, CONDITIONAL)
36 dnl Configure linux kernel source tree
38 AC_DEFUN([CHECK_LINUX], [
40 [AC_HELP_STRING([--with-$1=/path/to/linux-$3],
41 [Specify the linux $3 kernel sources])],
42 [path="$withval"], [path=])dnl
43 if test -n "$path"; then
44 path=`eval echo "$path"`
46 AC_MSG_CHECKING([for $path directory])
47 if test -d "$path"; then
53 AC_ERROR([source dir $path doesn't exist])
56 AC_MSG_CHECKING([for $path kernel version])
57 version=`grep '^PATCHLEVEL = ' "$path/Makefile" | sed 's/PATCHLEVEL = '//`
58 AC_MSG_RESULT([2.$version])
59 if test "2.$version" != '$3'; then
60 AC_ERROR([Linux kernel source in $path is not version $3])
62 if ! test -e "$path"/include/linux/version.h || \
63 ! test -e "$path"/include/linux/autoconf.h; then
64 AC_MSG_ERROR([Linux kernel source in $path is not configured])
67 AM_CONDITIONAL($5, test -n "$path")