lirc-0.8.4a/acinclude.m4

   1 ## $Id: acinclude.m4,v 1.12 2008/09/25 17:36:08 lirc Exp $
   2 ##
   3 ## additional m4 macros
   4 ##
   5 ## (C) 1999 Christoph Bartelmus (lirc@bartelmus.de)
   6 ##
   7
   8
   9 dnl check for kernel source
  10
  11 AC_DEFUN([AC_PATH_KERNEL_SOURCE_SEARCH],
  12 [
  13   kerneldir=missing
  14   kernelext=ko
  15   no_kernel=yes
  16
  17   if test `uname` != "Linux"; then
  18     kerneldir="not running Linux"
  19   else
  20     for dir in /usr/src/kernel-source-`uname -r` /usr/src/linux-`uname -r` /usr/src/linux /lib/modules/`uname -r`/source /lib/modules/`uname -r`/build ${ac_kerneldir}; do
  21       if test -d $dir; then
  22         kerneldir=`dirname $dir/Makefile`/
  23         no_kernel=no
  24       fi;
  25     done
  26   fi
  27
  28   if test x${no_kernel} != xyes; then
  29     if test -f ${kerneldir}/Makefile; then
  30       if test "${ac_pkss_mktemp}" = "yes"; then
  31         ac_pkss_makefile=`mktemp /tmp/LIRCMF.XXXXXX`
  32       else
  33         ac_pkss_makefile=/tmp/LIRCMF.XXXXXX
  34       fi
  35       cat ${kerneldir}/Makefile >${ac_pkss_makefile}
  36
  37       echo "lirc_tell_me_what_version_is:" >>${ac_pkss_makefile}
  38       echo "    echo \$(VERSION)" >>${ac_pkss_makefile}
  39       echo "lirc_tell_me_what_patchlevel_is:" >>${ac_pkss_makefile}
  40       echo "    echo \$(PATCHLEVEL)" >>${ac_pkss_makefile}
  41       version=$(make -s -C ${kerneldir} -f ${ac_pkss_makefile} lirc_tell_me_what_version_is M=$(pwd))
  42       patchlevel=$(make -s -C ${kerneldir} -f ${ac_pkss_makefile} lirc_tell_me_what_patchlevel_is M=$(pwd))
  43       if test ${version} -eq 2; then
  44         if test ${patchlevel} -lt 5; then
  45           kernelext=o
  46         fi
  47       fi
  48       rm -f ${ac_pkss_makefile}
  49     else
  50       kerneldir="no Makefile found"
  51       no_kernel=yes
  52     fi
  53   fi
  54   ac_cv_have_kernel="no_kernel=${no_kernel} \
  55                 kerneldir=\"${kerneldir}\" \
  56                 kernelext=\"${kernelext}\""
  57 ]
  58 )
  59
  60 AC_DEFUN([AC_PATH_KERNEL_SOURCE],
  61 [
  62   AC_CHECK_PROG(ac_pkss_mktemp,mktemp,yes,no)
  63   AC_PROVIDE([AC_PATH_KERNEL_SOURCE])
  64   AC_MSG_CHECKING(for Linux kernel sources)
  65
  66   AC_ARG_WITH(kerneldir,
  67     [  --with-kerneldir=DIR    kernel sources in DIR],
  68
  69     ac_kerneldir=${withval}
  70     AC_PATH_KERNEL_SOURCE_SEARCH,
  71
  72     ac_kerneldir=""
  73     AC_CACHE_VAL(ac_cv_have_kernel,AC_PATH_KERNEL_SOURCE_SEARCH)
  74   )
  75
  76   eval "$ac_cv_have_kernel"
  77
  78   AC_SUBST(kerneldir)
  79   AC_SUBST(kernelext)
  80   AC_MSG_RESULT(${kerneldir})
  81 ]
  82 )