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
  10 ver=`uname -r`
  11 KERNELCFLAGS=
  12
  13 kernelsrc=
  14 kernelbuild=
  15 AC_ARG_WITH(kernel,
  16         [  --with-linux=PATH      Path to kernel source ],
  17         [kernelsrc="$withval"; kernelbuild="$withval"])
  18 AC_ARG_WITH(kernel-build,
  19         [  --with-linux-obj=PATH  Path to kernel build objects ],
  20         [kernelbuild="$withval"])
  21
  22 AC_MSG_CHECKING([kernel source directory])
  23 if test -z "$kernelsrc"; then
  24         kernelbuild=
  25         sourcelink=/lib/modules/${ver}/source
  26         buildlink=/lib/modules/${ver}/build
  27
  28         if test -e $sourcelink; then
  29                 kernelsrc=`(cd $sourcelink; /bin/pwd)`
  30         fi
  31         if test -e $buildlink; then
  32                 kernelbuild=`(cd $buildlink; /bin/pwd)`
  33         fi
  34         if test -z "$kernelsrc"; then
  35                 kernelsrc=$kernelbuild
  36         fi
  37         if test -z "$kernelsrc" -o -z "$kernelbuild"; then
  38                 AC_MSG_RESULT([Not found])
  39                 AC_MSG_ERROR([
  40                         *** Please specify the location of the kernel source
  41                         *** with the '--with-kernel=PATH' option])
  42         fi
  43 fi
  44
  45 AC_MSG_RESULT([$kernelsrc])
  46 AC_MSG_CHECKING([kernel build directory])
  47 AC_MSG_RESULT([$kernelbuild])
  48
  49 AC_MSG_CHECKING([kernel source version])
  50 if test -r $kernelbuild/include/linux/version.h &&
  51         fgrep -q UTS_RELEASE $kernelbuild/include/linux/version.h; then
  52
  53         kernsrcver=`(echo "#include <linux/version.h>";
  54                      echo "kernsrcver=UTS_RELEASE") |
  55                      cpp -I $kernelbuild/include |
  56                      grep "^kernsrcver=" | cut -d \" -f 2`
  57
  58 elif test -r $kernelbuild/include/linux/utsrelease.h &&
  59         fgrep -q UTS_RELEASE $kernelbuild/include/linux/utsrelease.h; then
  60
  61         kernsrcver=`(echo "#include <linux/utsrelease.h>";
  62                      echo "kernsrcver=UTS_RELEASE") |
  63                      cpp -I $kernelbuild/include |
  64                      grep "^kernsrcver=" | cut -d \" -f 2`
  65 fi
  66
  67 if test -z "$kernsrcver"; then
  68         AC_MSG_RESULT([Not found])
  69         AC_MSG_ERROR([
  70                 *** Cannot determine the version of the linux kernel source.
  71                 *** Please prepare the kernel before running this script])
  72 fi
  73
  74 AC_MSG_RESULT([$kernsrcver])
  75 kmoduledir=${INSTALL_MOD_PATH}/lib/modules/$kernsrcver
  76 AC_SUBST(kernelsrc)
  77 AC_SUBST(kmoduledir)
  78
  79 #
  80 # Each version of the kernel provides a slightly different
  81 # ABI, so figure out what we have to work with and adapt.
  82 #
  83 AC_MSG_CHECKING([if kernel defines kzalloc function])
  84 if egrep -qw "kzalloc" $kernelsrc/include/linux/slab.h; then
  85         AC_DEFINE(HAVE_KZALLOC, 1, [kzalloc() is defined])
  86         AC_MSG_RESULT([yes])
  87 else
  88         AC_MSG_RESULT([no])
  89 fi
  90
  91 AC_MSG_CHECKING([if inode has i_private field])
  92 if egrep -qw "i_private" $kernelsrc/include/linux/fs.h; then
  93         AC_DEFINE(HAVE_I_PRIVATE, 1, [inode has i_private field])
  94         AC_MSG_RESULT([yes])
  95 else
  96         AC_MSG_RESULT([no])
  97 fi
  98
  99 AC_MSG_CHECKING([if inode has i_mutex field ])
 100 if egrep -qw "i_mutex" $kernelsrc/include/linux/fs.h; then
 101         AC_DEFINE(HAVE_I_MUTEX, 1, [inode has i_mutex field])
 102         AC_MSG_RESULT([yes])
 103 else
 104         AC_MSG_RESULT([no])
 105 fi
 106
 107 AC_MSG_CHECKING([if kernel has mutex.h ])
 108 if test -f $kernelsrc/include/linux/mutex.h; then
 109         AC_DEFINE(HAVE_MUTEX_H, 1, [kernel has mutex.h])
 110         AC_MSG_RESULT([yes])
 111 else
 112         AC_MSG_RESULT([no])
 113 fi
 114
 115 if test "$kernelbuild" != "$kernelsrc"; then
 116         KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$kernelbuild"
 117 fi
 118
 119 AC_SUBST(KERNELMAKE_PARAMS)
 120 AC_SUBST(KERNELCPPFLAGS)
 121 AC_SUBST(KERNELCFLAGS)
 122
 123 AC_CONFIG_FILES([ Makefile
 124                   src/Makefile
 125                   src/cmd/Makefile
 126                   src/spl/Makefile
 127                   src/splat/Makefile
 128                   include/Makefile
 129                   scripts/Makefile
 130                   scripts/spl.spec
 131                ])
 132
 133 AC_OUTPUT