diff options
Diffstat (limited to 'config/always-python.m4')
| -rw-r--r-- | config/always-python.m4 | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/config/always-python.m4 b/config/always-python.m4 new file mode 100644 index 000000000..858ab7b01 --- /dev/null +++ b/config/always-python.m4 @@ -0,0 +1,102 @@ +dnl # +dnl # ZFS_AC_PYTHON_VERSION(version, [action-if-true], [action-if-false]) +dnl # +dnl # Verify Python version +dnl # +AC_DEFUN([ZFS_AC_PYTHON_VERSION], [ + ver_check=`$PYTHON -c "import sys; print (sys.version.split()[[0]] $1)"` + AS_IF([test "$ver_check" = "True"], [ + m4_ifvaln([$2], [$2]) + ], [ + m4_ifvaln([$3], [$3]) + ]) +]) + +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], [$3]) + ]) +]) + +dnl # +dnl # The majority of the python scripts are written to be compatible +dnl # with Python 2.6 and Python 3.4. Therefore, they may be installed +dnl # and used with either interpreter. This option is intended to +dnl # to provide a method to specify the default system version, and +dnl # set the PYTHON environment variable accordingly. +dnl # +AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_PYTHON], [ + AC_ARG_WITH([python], + AC_HELP_STRING([--with-python[=VERSION]], + [default system python version @<:@default=check@:>@]), + [with_python=$withval], + [with_python=check]) + + AS_CASE([$with_python], + [check], + [AS_IF([test -x /usr/bin/python3], + [PYTHON="python3"], + [AS_IF([test -x /usr/bin/python2], + [PYTHON="python2"], + [PYTHON=""] + )] + )], + [2*], [PYTHON="python${with_python}"], + [*python2*], [PYTHON="${with_python}"], + [3*], [PYTHON="python${with_python}"], + [*python3*], [PYTHON="${with_python}"], + [no], [PYTHON=""], + [AC_MSG_ERROR([Unknown --with-python value '$with_python'])] + ) + + AS_IF([$PYTHON --version >/dev/null 2>&1], [ /bin/true ], [ + AC_MSG_ERROR([Cannot find $PYTHON in your system path]) + ]) + + AM_PATH_PYTHON([2.6], [], [:]) + AM_CONDITIONAL([USING_PYTHON], [test "$PYTHON" != :]) + AM_CONDITIONAL([USING_PYTHON_2], [test "${PYTHON_VERSION:0:2}" = "2."]) + AM_CONDITIONAL([USING_PYTHON_3], [test "${PYTHON_VERSION:0:2}" = "3."]) + + dnl # + dnl # Minimum supported Python versions for utilities: + dnl # Python 2.6.x, or Python 3.4.x + dnl # + AS_IF([test "${PYTHON_VERSION:0:2}" = "2."], [ + ZFS_AC_PYTHON_VERSION([>= '2.6'], [ /bin/true ], + [AC_MSG_ERROR("Python >= 2.6.x is not available")]) + ]) + + AS_IF([test "${PYTHON_VERSION:0:2}" = "3."], [ + ZFS_AC_PYTHON_VERSION([>= '3.4'], [ /bin/true ], + [AC_MSG_ERROR("Python >= 3.4.x is not available")]) + ]) + + dnl # + dnl # Request that packages be built for a specific Python version. + dnl # + AS_IF([test $with_python != check], [ + PYTHON_PKG_VERSION=`echo ${PYTHON} | tr -d 'a-zA-Z.'` + DEFINE_PYTHON_PKG_VERSION='--define "__use_python_pkg_version '${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) +]) |