src/cf/linux-kernel-path.m4

   1 AC_DEFUN([OPENAFS_LINUX_KERNEL_PATH],[
   2 if test "x$with_linux_kernel_headers" != "x"; then
   3   LINUX_KERNEL_PATH="$with_linux_kernel_headers"
   4 else
   5   for utsdir in "/lib/modules/`uname -r`/build" \
   6                 "/lib/modules/`uname -r`/source" \
   7                 "/usr/src/linux"; do
   8     LINUX_KERNEL_PATH="$utsdir"
   9     for utsfile in "include/generated/utsrelease.h" \
  10                    "include/linux/utsrelease.h" \
  11                    "include/linux/version.h" \
  12                    "include/linux/version-up.h"; do
  13       if grep "UTS_RELEASE" "$utsdir/$utsfile" >/dev/null 2>&1; then
  14         break 2
  15       fi
  16     done
  17   done
  18 fi
  19 if test "x$with_linux_kernel_build" != "x"; then
  20   LINUX_KERNEL_BUILD="$with_linux_kernel_build"
  21 else
  22   LINUX_KERNEL_BUILD=$LINUX_KERNEL_PATH
  23 fi
  24 if test -f "$LINUX_KERNEL_BUILD/include/generated/utsrelease.h"; then
  25   linux_kvers=`fgrep UTS_RELEASE $LINUX_KERNEL_BUILD/include/generated/utsrelease.h |awk 'BEGIN { FS="\"" } { print $[]2 }'|tail -n 1`
  26   LINUX_VERSION="$linux_kvers"
  27 else
  28   if test -f "$LINUX_KERNEL_BUILD/include/linux/utsrelease.h"; then
  29     linux_kvers=`fgrep UTS_RELEASE $LINUX_KERNEL_BUILD/include/linux/utsrelease.h |awk 'BEGIN { FS="\"" } { print $[]2 }'|tail -n 1`
  30     LINUX_VERSION="$linux_kvers"
  31   else
  32     if test -f "$LINUX_KERNEL_BUILD/include/linux/version.h"; then
  33       linux_kvers=`fgrep UTS_RELEASE $LINUX_KERNEL_BUILD/include/linux/version.h |awk 'BEGIN { FS="\"" } { print $[]2 }'|tail -n 1`
  34       if test "x$linux_kvers" = "x"; then
  35         if test -f "$LINUX_KERNEL_BUILD/include/linux/version-up.h"; then
  36           linux_kvers=`fgrep UTS_RELEASE $LINUX_KERNEL_BUILD/include/linux/version-up.h |awk 'BEGIN { FS="\"" } { print $[]2 }'|tail -n 1`
  37           if test "x$linux_kvers" = "x"; then
  38             AC_MSG_ERROR(Linux headers lack version definition [2])
  39             exit 1
  40           else
  41             LINUX_VERSION="$linux_kvers"
  42           fi
  43         else
  44           AC_MSG_ERROR(Linux headers lack version definition)
  45           exit 1
  46         fi
  47       else
  48         LINUX_VERSION="$linux_kvers"
  49       fi
  50     else
  51       enable_kernel_module="no"
  52     fi
  53   fi
  54 fi
  55 if test ! -f "$LINUX_KERNEL_BUILD/include/generated/autoconf.h" &&
  56    test ! -f "$LINUX_KERNEL_BUILD/include/linux/autoconf.h"; then
  57     enable_kernel_module="no"
  58 fi
  59 if test "x$enable_kernel_module" = "xno"; then
  60  if test "x$with_linux_kernel_headers" != "x"; then
  61   AC_MSG_ERROR(No usable linux headers found at $LINUX_KERNEL_PATH)
  62   exit 1
  63  else
  64   AC_MSG_WARN(No usable linux headers found at $LINUX_KERNEL_PATH so disabling kernel module)
  65  fi
  66 fi
  67 dnl do we need to determine SUBARCH from autoconf.h
  68 SUBARCH=default
  69 ])