mirror_zfs/config/always-pyzfs.m4
Rich Ercolani 08cd071735
Correct a flaw in the Python 3 version checking
It turns out the ax_python_devel.m4 version check assumes that
("3.X+1.0" >= "3.X.0") is True in Python, which is not when X+1
is 10 or above and X is not. (Also presumably X+1=100 and ...)

So let's remake the check to behave consistently, using the
"packaging" or (if absent) the "distlib" modules.

(Also, update the Github workflows to use the new packages.)

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: Rich Ercolani <rincebrain@gmail.com>
Closes: #12073
2021-06-08 18:20:16 -06:00

121 lines
3.3 KiB
Plaintext

dnl #
dnl # ZFS_AC_PYTHON_MODULE(module_name, [action-if-true], [action-if-false])
dnl #
dnl # Checks for Python module. Freely inspired by AX_PYTHON_MODULE
dnl # https://www.gnu.org/software/autoconf-archive/ax_python_module.html
dnl # Required by ZFS_AC_CONFIG_ALWAYS_PYZFS.
dnl #
AC_DEFUN([ZFS_AC_PYTHON_MODULE], [
PYTHON_NAME=$(basename $PYTHON)
AC_MSG_CHECKING([for $PYTHON_NAME module: $1])
AS_IF([$PYTHON -c "import $1" 2>/dev/null], [
AC_MSG_RESULT(yes)
m4_ifvaln([$2], [$2])
], [
AC_MSG_RESULT(no)
m4_ifvaln([$3], [$3])
])
])
dnl #
dnl # Determines if pyzfs can be built, requires Python 2.7 or later.
dnl #
AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_PYZFS], [
AC_ARG_ENABLE([pyzfs],
AS_HELP_STRING([--enable-pyzfs],
[install libzfs_core python bindings @<:@default=check@:>@]),
[enable_pyzfs=$enableval],
[enable_pyzfs=check])
dnl #
dnl # Packages for pyzfs specifically enabled/disabled.
dnl #
AS_IF([test "x$enable_pyzfs" != xcheck], [
AS_IF([test "x$enable_pyzfs" = xyes], [
DEFINE_PYZFS='--with pyzfs'
], [
DEFINE_PYZFS='--without pyzfs'
])
], [
AS_IF([test "$PYTHON" != :], [
DEFINE_PYZFS=''
], [
enable_pyzfs=no
DEFINE_PYZFS='--without pyzfs'
])
])
AC_SUBST(DEFINE_PYZFS)
dnl #
dnl # Python "packaging" (or, failing that, "distlib") module is required to build and install pyzfs
dnl #
AS_IF([test "x$enable_pyzfs" = xcheck -o "x$enable_pyzfs" = xyes], [
ZFS_AC_PYTHON_MODULE([packaging], [], [
ZFS_AC_PYTHON_MODULE([distlib], [], [
AS_IF([test "x$enable_pyzfs" = xyes], [
AC_MSG_ERROR("Python $PYTHON_VERSION packaging and distlib modules are not installed")
], [test "x$enable_pyzfs" != xno], [
enable_pyzfs=no
])
])
])
])
dnl #
dnl # Require python-devel libraries
dnl #
AS_IF([test "x$enable_pyzfs" = xcheck -o "x$enable_pyzfs" = xyes], [
AS_CASE([$PYTHON_VERSION],
[3.*], [PYTHON_REQUIRED_VERSION=">= '3.4.0'"],
[2.*], [PYTHON_REQUIRED_VERSION=">= '2.7.0'"],
[AC_MSG_ERROR("Python $PYTHON_VERSION unknown")]
)
AX_PYTHON_DEVEL([$PYTHON_REQUIRED_VERSION], [
AS_IF([test "x$enable_pyzfs" = xyes], [
AC_MSG_ERROR("Python $PYTHON_REQUIRED_VERSION development library is not installed")
], [test "x$enable_pyzfs" != xno], [
enable_pyzfs=no
])
])
])
dnl #
dnl # Python "setuptools" module is required to build and install pyzfs
dnl #
AS_IF([test "x$enable_pyzfs" = xcheck -o "x$enable_pyzfs" = xyes], [
ZFS_AC_PYTHON_MODULE([setuptools], [], [
AS_IF([test "x$enable_pyzfs" = xyes], [
AC_MSG_ERROR("Python $PYTHON_VERSION setuptools is not installed")
], [test "x$enable_pyzfs" != xno], [
enable_pyzfs=no
])
])
])
dnl #
dnl # Python "cffi" module is required to run pyzfs
dnl #
AS_IF([test "x$enable_pyzfs" = xcheck -o "x$enable_pyzfs" = xyes], [
ZFS_AC_PYTHON_MODULE([cffi], [], [
AS_IF([test "x$enable_pyzfs" = xyes], [
AC_MSG_ERROR("Python $PYTHON_VERSION cffi is not installed")
], [test "x$enable_pyzfs" != xno], [
enable_pyzfs=no
])
])
])
dnl #
dnl # Set enable_pyzfs to 'yes' if every check passed
dnl #
AS_IF([test "x$enable_pyzfs" = xcheck], [enable_pyzfs=yes])
AM_CONDITIONAL([PYZFS_ENABLED], [test "x$enable_pyzfs" = xyes])
AC_SUBST([PYZFS_ENABLED], [$enable_pyzfs])
AC_SUBST(pythonsitedir, [$PYTHON_SITE_PKG])
AC_MSG_CHECKING([whether to enable pyzfs: ])
AC_MSG_RESULT($enable_pyzfs)
])