configure.ac

   1 AC_INIT
   2
   3 AC_CANONICAL_SYSTEM
   4 AM_INIT_AUTOMAKE(spl, 0.0.1)
   5 AC_CONFIG_HEADERS([config.h])
   6
   7 AC_PROG_INSTALL
   8 AC_PROG_CC
   9 AC_PROG_LIBTOOL
  10
  11 ver=`uname -r`
  12 KERNELCFLAGS=
  13
  14 kernelsrc=
  15 kernelbuild=
  16 AC_ARG_WITH(kernel,
  17         [  --with-linux=PATH      Path to kernel source ],
  18         [kernelsrc="$withval"; kernelbuild="$withval"])
  19 AC_ARG_WITH(kernel-build,
  20         [  --with-linux-obj=PATH  Path to kernel build objects ],
  21         [kernelbuild="$withval"])
  22
  23 AC_MSG_CHECKING([kernel source directory])
  24 if test -z "$kernelsrc"; then
  25         kernelbuild=
  26         sourcelink=/lib/modules/${ver}/source
  27         buildlink=/lib/modules/${ver}/build
  28
  29         if test -e $sourcelink; then
  30                 kernelsrc=`(cd $sourcelink; /bin/pwd)`
  31         fi
  32         if test -e $buildlink; then
  33                 kernelbuild=`(cd $buildlink; /bin/pwd)`
  34         fi
  35         if test -z "$kernelsrc"; then
  36                 kernelsrc=$kernelbuild
  37         fi
  38         if test -z "$kernelsrc" -o -z "$kernelbuild"; then
  39                 AC_MSG_RESULT([Not found])
  40                 AC_MSG_ERROR([
  41                         *** Please specify the location of the kernel source
  42                         *** with the '--with-kernel=PATH' option])
  43         fi
  44 fi
  45
  46 AC_MSG_RESULT([$kernelsrc])
  47 AC_MSG_CHECKING([kernel build directory])
  48 AC_MSG_RESULT([$kernelbuild])
  49
  50 AC_MSG_CHECKING([kernel source version])
  51 if test -r $kernelbuild/include/linux/version.h &&
  52         fgrep -q UTS_RELEASE $kernelbuild/include/linux/version.h; then
  53
  54         kernsrcver=`(echo "#include <linux/version.h>";
  55                      echo "kernsrcver=UTS_RELEASE") |
  56                      cpp -I $kernelbuild/include |
  57                      grep "^kernsrcver=" | cut -d \" -f 2`
  58
  59 elif test -r $kernelbuild/include/linux/utsrelease.h &&
  60         fgrep -q UTS_RELEASE $kernelbuild/include/linux/utsrelease.h; then
  61
  62         kernsrcver=`(echo "#include <linux/utsrelease.h>";
  63                      echo "kernsrcver=UTS_RELEASE") |
  64                      cpp -I $kernelbuild/include |
  65                      grep "^kernsrcver=" | cut -d \" -f 2`
  66 fi
  67
  68 if test -z "$kernsrcver"; then
  69         AC_MSG_RESULT([Not found])
  70         AC_MSG_ERROR([
  71                 *** Cannot determine the version of the linux kernel source.
  72                 *** Please prepare the kernel before running this script])
  73 fi
  74
  75 AC_MSG_RESULT([$kernsrcver])
  76 kmoduledir=${INSTALL_MOD_PATH}/lib/modules/$kernsrcver
  77 AC_SUBST(kernelsrc)
  78 AC_SUBST(kmoduledir)
  79
  80 #
  81 # Each version of the kernel provides a slightly different
  82 # ABI, so figure out what we have to work with and adapt.
  83 #
  84 AC_MSG_CHECKING([if kernel defines kzalloc function])
  85 if egrep -qw "kzalloc" $kernelsrc/include/linux/slab.h; then
  86         AC_DEFINE(HAVE_KZALLOC, 1, [kzalloc() is defined])
  87         AC_MSG_RESULT([yes])
  88 else
  89         AC_MSG_RESULT([no])
  90 fi
  91
  92
  93 AC_MSG_CHECKING([if kernel has mutex.h ])
  94 if test -f $kernelsrc/include/linux/mutex.h; then
  95         AC_DEFINE(HAVE_MUTEX_H, 1, [kernel has mutex.h])
  96         AC_MSG_RESULT([yes])
  97 else
  98         AC_MSG_RESULT([no])
  99 fi
 100
 101 if test "$kernelbuild" != "$kernelsrc"; then
 102         KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$kernelbuild"
 103 fi
 104
 105 AC_SUBST(KERNELMAKE_PARAMS)
 106 AC_SUBST(KERNELCPPFLAGS)
 107 AC_SUBST(KERNELCFLAGS)
 108
 109 AC_CONFIG_FILES([ Makefile
 110                   src/Makefile
 111                   src/lib/Makefile
 112                   src/cmd/Makefile
 113                   src/spl/Makefile
 114                   src/splat/Makefile
 115                   include/Makefile
 116                   scripts/Makefile
 117                   scripts/spl.spec
 118                ])
 119
 120 AC_OUTPUT