Justin Pettit
43 lines
1.4 KiB
Plaintext
43 lines
1.4 KiB
Plaintext
dnl =================================================================================
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dnl Distributed under the terms of the GNU GPL version 2.
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dnl Copyright (c) 2007, 2008 The Board of Trustees of The Leland Stanford Junior University
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dnl =================================================================================
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dnl --
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dnl CHECK_LINUX(OPTION, VERSION, VARIABLE, CONDITIONAL)
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dnl
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dnl Configure linux kernel source tree
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dnl --
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AC_DEFUN([CHECK_LINUX], [
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AC_ARG_WITH([$1],
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[AC_HELP_STRING([--with-$1=/path/to/linux-$3],
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[Specify the linux $3 kernel sources])],
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[path="$withval"], [path=])dnl
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if test -n "$path"; then
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path=`eval echo "$path"`
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AC_MSG_CHECKING([for $path directory])
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if test -d "$path"; then
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AC_MSG_RESULT([yes])
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$4=$path
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AC_SUBST($4)
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else
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AC_MSG_RESULT([no])
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AC_ERROR([source dir $path doesn't exist])
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fi
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AC_MSG_CHECKING([for $path kernel version])
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version=`grep '^PATCHLEVEL = ' "$path/Makefile" | sed 's/PATCHLEVEL = '//`
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AC_MSG_RESULT([2.$version])
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if test "2.$version" != '$3'; then
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AC_ERROR([Linux kernel source in $path is not version $3])
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fi
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if ! test -e "$path"/include/linux/version.h || \
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! test -e "$path"/include/linux/autoconf.h; then
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AC_MSG_ERROR([Linux kernel source in $path is not configured])
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fi
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fi
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AM_CONDITIONAL($5, test -n "$path")
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])
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