configure.ac

   1 AC_INIT
   2
   3 AC_CANONICAL_SYSTEM
   4 AM_INIT_AUTOMAKE(spl, 0.2.0)
   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 kernelsrc=
  13 kernelbuild=
  14 AC_ARG_WITH(kernel,
  15         [  --with-linux=PATH      Path to kernel source ],
  16         [kernelsrc="$withval"; kernelbuild="$withval"])
  17 AC_ARG_WITH(kernel-build,
  18         [  --with-linux-obj=PATH  Path to kernel build objects ],
  19         [kernelbuild="$withval"])
  20
  21 AC_MSG_CHECKING([kernel source directory])
  22 if test -z "$kernelsrc"; then
  23         kernelbuild=
  24         sourcelink=/lib/modules/${ver}/source
  25         buildlink=/lib/modules/${ver}/build
  26
  27         if test -e $sourcelink; then
  28                 kernelsrc=`(cd $sourcelink; /bin/pwd)`
  29         fi
  30         if test -e $buildlink; then
  31                 kernelbuild=`(cd $buildlink; /bin/pwd)`
  32         fi
  33         if test -z "$kernelsrc"; then
  34                 kernelsrc=$kernelbuild
  35         fi
  36         if test -z "$kernelsrc" -o -z "$kernelbuild"; then
  37                 AC_MSG_RESULT([Not found])
  38                 AC_MSG_ERROR([
  39                         *** Please specify the location of the kernel source
  40                         *** with the '--with-kernel=PATH' option])
  41         fi
  42 fi
  43
  44 AC_MSG_RESULT([$kernelsrc])
  45 AC_MSG_CHECKING([kernel build directory])
  46 AC_MSG_RESULT([$kernelbuild])
  47
  48 AC_MSG_CHECKING([kernel source version])
  49 if test -r $kernelbuild/include/linux/version.h &&
  50         fgrep -q UTS_RELEASE $kernelbuild/include/linux/version.h; then
  51
  52         kernsrcver=`(echo "#include <linux/version.h>";
  53                      echo "kernsrcver=UTS_RELEASE") |
  54                      cpp -I $kernelbuild/include |
  55                      grep "^kernsrcver=" | cut -d \" -f 2`
  56
  57 elif test -r $kernelbuild/include/linux/utsrelease.h &&
  58         fgrep -q UTS_RELEASE $kernelbuild/include/linux/utsrelease.h; then
  59
  60         kernsrcver=`(echo "#include <linux/utsrelease.h>";
  61                      echo "kernsrcver=UTS_RELEASE") |
  62                      cpp -I $kernelbuild/include |
  63                      grep "^kernsrcver=" | cut -d \" -f 2`
  64 fi
  65
  66 if test -z "$kernsrcver"; then
  67         AC_MSG_RESULT([Not found])
  68         AC_MSG_ERROR([
  69                 *** Cannot determine the version of the linux kernel source.
  70                 *** Please prepare the kernel before running this script])
  71 fi
  72
  73 AC_MSG_RESULT([$kernsrcver])
  74 kmoduledir=${INSTALL_MOD_PATH}/lib/modules/$kernsrcver
  75 AC_SUBST(kernelsrc)
  76 AC_SUBST(kmoduledir)
  77
  78 #
  79 # Each version of the kernel provides a slightly different
  80 # ABI, so figure out what we have to work with and adapt.
  81 #
  82 AC_MSG_CHECKING([if kernel defines kzalloc function])
  83 if egrep -qw "kzalloc" $kernelsrc/include/linux/slab.h; then
  84         AC_DEFINE(HAVE_KZALLOC, 1, [kzalloc() is defined])
  85         AC_MSG_RESULT([yes])
  86 else
  87         AC_MSG_RESULT([no])
  88 fi
  89
  90
  91 AC_MSG_CHECKING([if kernel has mutex.h ])
  92 if test -f $kernelsrc/include/linux/mutex.h; then
  93         AC_DEFINE(HAVE_MUTEX_H, 1, [kernel has mutex.h])
  94         AC_MSG_RESULT([yes])
  95 else
  96         AC_MSG_RESULT([no])
  97 fi
  98
  99 TOPDIR=`/bin/pwd`
 100
 101 # Add "V=1" to KERNELMAKE_PARAMS to enable verbose module build
 102 KERNELMAKE_PARAMS=
 103 KERNELCPPFLAGS="-I$TOPDIR -I$TOPDIR/include"
 104
 105 if test "$kernelbuild" != "$kernelsrc"; then
 106         KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$kernelbuild"
 107 fi
 108
 109 AC_SUBST(KERNELMAKE_PARAMS)
 110 AC_SUBST(KERNELCPPFLAGS)
 111 AC_SUBST(KERNELCFLAGS)
 112
 113 AC_CONFIG_FILES([ Makefile
 114                   lib/Makefile
 115                   cmd/Makefile
 116                   modules/Makefile
 117                   modules/spl/Makefile
 118                   modules/splat/Makefile
 119                   include/Makefile
 120                   include/sys/Makefile
 121                   scripts/Makefile
 122                   scripts/spl.spec
 123                ])
 124
 125 AC_OUTPUT