mirror_zfs/config/always-python.m4
Damian Szuberski 8a7c4efd3c
Removed Python 2 and Python 3.5- support
Deprecation of Python versions below 3.6 gives opportunity to unify the
build and install requirements for OpenZFS packages. The minimal
supported Python version is 3.6 as this is the most recent Python
package CentOS/RHEL 7 users can get.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Rich Ercolani <rincebrain@gmail.com>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Signed-off-by: szubersk <szuberskidamian@gmail.com>
Closes #12925
2022-01-13 09:51:12 -07:00

58 lines
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dnl #
dnl # The majority of the python scripts are written to be compatible
dnl # with Python 3.6. This option is intended to
dnl # to provide a method to specify the default system version, and
dnl # set the PYTHON environment variable accordingly.
dnl #
AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_PYTHON], [
AC_ARG_WITH([python],
AS_HELP_STRING([--with-python[=VERSION]],
[default system python version @<:@default=check@:>@]),
[with_python=$withval],
[with_python=check])
AS_CASE([$with_python],
[check], [AC_CHECK_PROGS([PYTHON], [python3], [:])],
[3*], [PYTHON="python${with_python}"],
[*python3*], [PYTHON="${with_python}"],
[no], [PYTHON=":"],
[AC_MSG_ERROR([Unknown --with-python value '$with_python'])]
)
dnl #
dnl # Minimum supported Python versions for utilities: Python 3.6
dnl #
AM_PATH_PYTHON([], [], [:])
AS_IF([test -z "$PYTHON_VERSION"], [
PYTHON_VERSION=$(echo ${PYTHON##*/} | tr -cd 0-9.)
])
PYTHON_MINOR=${PYTHON_VERSION#*\.}
AS_CASE([$PYTHON_VERSION],
[3.*], [
AS_IF([test $PYTHON_MINOR -lt 6],
[AC_MSG_ERROR("Python >= 3.6 is required")])
],
[:|2|3], [],
[PYTHON_VERSION=3]
)
AM_CONDITIONAL([USING_PYTHON], [test "$PYTHON" != :])
AC_SUBST([PYTHON_SHEBANG], [python3])
dnl #
dnl # Request that packages be built for a specific Python version.
dnl #
AS_IF([test "x$with_python" != xcheck], [
PYTHON_PKG_VERSION=$(echo $PYTHON_VERSION | tr -d .)
DEFINE_PYTHON_PKG_VERSION='--define "__use_python_pkg_version '${PYTHON_PKG_VERSION}'"'
DEFINE_PYTHON_VERSION='--define "__use_python '${PYTHON}'"'
], [
DEFINE_PYTHON_VERSION=''
DEFINE_PYTHON_PKG_VERSION=''
])
AC_SUBST(DEFINE_PYTHON_VERSION)
AC_SUBST(DEFINE_PYTHON_PKG_VERSION)
])