config/always-pyzfs.m4

   1 dnl #
   2 dnl # ZFS_AC_PYTHON_MODULE(module_name, [action-if-true], [action-if-false])
   3 dnl #
   4 dnl # Checks for Python module. Freely inspired by AX_PYTHON_MODULE
   5 dnl # https://www.gnu.org/software/autoconf-archive/ax_python_module.html
   6 dnl #
   7 AC_DEFUN([ZFS_AC_PYTHON_MODULE],[
   8         PYTHON_NAME=`basename $PYTHON`
   9         AC_MSG_CHECKING([for $PYTHON_NAME module: $1])
  10         $PYTHON -c "import $1" 2>/dev/null
  11         if test $? -eq 0;
  12         then
  13                 AC_MSG_RESULT(yes)
  14                 m4_ifvaln([$2], [$2])
  15         else
  16                 AC_MSG_RESULT(no)
  17                 m4_ifvaln([$3], [$3])
  18         fi
  19 ])
  20
  21 dnl #
  22 dnl # ZFS_AC_PYTHON_VERSION(version, [action-if-true], [action-if-false])
  23 dnl #
  24 dnl # Verify Python version
  25 dnl #
  26 AC_DEFUN([ZFS_AC_PYTHON_VERSION], [
  27         AC_MSG_CHECKING([for a version of Python $1])
  28         version_check=`$PYTHON -c "import sys; print (sys.version.split()[[0]] $1)"`
  29         if test "$version_check" = "True";
  30         then
  31                 AC_MSG_RESULT(yes)
  32                 m4_ifvaln([$2], [$2])
  33         else
  34                 AC_MSG_RESULT(no)
  35                 m4_ifvaln([$3], [$3])
  36         fi
  37
  38 ])
  39
  40 AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_PYZFS], [
  41         PYTHON_REQUIRED_VERSION="<= '2.7.x'"
  42
  43         AC_ARG_ENABLE([pyzfs],
  44                 AC_HELP_STRING([--enable-pyzfs],
  45                 [install libzfs_core python bindings @<:@default=check@:>@]),
  46                 [enable_pyzfs=$enableval],
  47                 [enable_pyzfs=check])
  48
  49         AM_PATH_PYTHON([2.7], [], [
  50                 AS_IF([test ! "x$enable_pyzfs" = xyes], [
  51                         AC_MSG_ERROR("python >= 2.7 is not installed")
  52                 ], [test ! "x$enable_pyzfs" = xno], [
  53                         enable_pyzfs=no
  54                 ])
  55         ])
  56         AM_CONDITIONAL([HAVE_PYTHON], [test "$PYTHON" != :])
  57
  58         dnl #
  59         dnl # Python 2.7.x is supported, other versions (3.5) are not yet
  60         dnl #
  61         AS_IF([test "x$enable_pyzfs" = xcheck], [
  62                 ZFS_AC_PYTHON_VERSION([$PYTHON_REQUIRED_VERSION], [], [
  63                         AS_IF([test "x$enable_pyzfs" = xyes], [
  64                                 AC_MSG_ERROR("Python $PYTHON_REQUIRED_VERSION is not available")
  65                         ], [test ! "x$enable_pyzfs" = xno], [
  66                                 enable_pyzfs=no
  67                         ])
  68                 ])
  69         ])
  70
  71         dnl #
  72         dnl # Require python-devel libraries
  73         dnl #
  74         AS_IF([test "x$enable_pyzfs" = xcheck], [
  75                 AX_PYTHON_DEVEL([$PYTHON_REQUIRED_VERSION], [
  76                         AS_IF([test "x$enable_pyzfs" = xyes], [
  77                                 AC_MSG_ERROR("Python development library is not available")
  78                         ], [test ! "x$enable_pyzfs" = xno], [
  79                                 enable_pyzfs=no
  80                         ])
  81                 ])
  82         ])
  83
  84         dnl #
  85         dnl # Python "setuptools" module is required to build and install pyzfs
  86         dnl #
  87         AS_IF([test "x$enable_pyzfs" = xcheck], [
  88                 ZFS_AC_PYTHON_MODULE([setuptools], [], [
  89                         AS_IF([test "x$enable_pyzfs" = xyes], [
  90                                 AC_MSG_ERROR("python-setuptools is not installed")
  91                         ], [test ! "x$enable_pyzfs" = xno], [
  92                                 enable_pyzfs=no
  93                         ])
  94                 ])
  95         ])
  96
  97         dnl #
  98         dnl # Python "cffi" module is required to run pyzfs
  99         dnl #
 100         AS_IF([test "x$enable_pyzfs" = xcheck], [
 101                 ZFS_AC_PYTHON_MODULE([cffi], [], [
 102                         AS_IF([test "x$enable_pyzfs" = xyes], [
 103                                 AC_MSG_ERROR("python-cffi is not installed")
 104                         ], [test ! "x$enable_pyzfs" = xno], [
 105                                 enable_pyzfs=no
 106                         ])
 107                 ])
 108         ])
 109
 110         dnl #
 111         dnl # Set enable_pyzfs to 'yes' if every check passed
 112         dnl #
 113         AS_IF([test "x$enable_pyzfs" = xcheck], [enable_pyzfs=yes])
 114
 115         AM_CONDITIONAL([PYZFS_ENABLED], [test x$enable_pyzfs = xyes])
 116         AC_SUBST([PYZFS_ENABLED], [$enable_pyzfs])
 117
 118         AS_IF([test "x$enable_pyzfs" = xyes], [
 119                 DEFINE_PYZFS='--define "_pyzfs 1"'
 120         ],[
 121                 DEFINE_PYZFS=''
 122         ])
 123         AC_SUBST(DEFINE_PYZFS)
 124         AC_SUBST(pythonsitedir, [$PYTHON_SITE_PKG])
 125 ])