python: Improve Python detection.

* m4/python.m4 (_AM_PYTHON_INTERPRETER_LIST): Prefer the generic
'pythonX' over 'pythonX.Y'.  This way we select the users preferred
version for both flavors.  Prefer 'python' over 'python3' but not over
'python2' so that the algorithm still finds a 'python2' even if
'python' is a Python3.

Fixes-commit: 5189c08af9
Signed-off-by: Justus Winter <justus@g10code.com>
This commit is contained in:
Justus Winter 2017-03-22 15:33:06 +01:00
parent 421ddd1e67
commit 104635eb50
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@ -37,8 +37,10 @@ AC_DEFUN([AM_PATH_PYTHON],
dnl Find a Python interpreter. Python versions prior to 2.0 are not
dnl supported. (2.0 was released on October 16, 2000).
m4_define_default([_AM_PYTHON_INTERPRETER_LIST],
[python2.7 python2 python3.0 python3.1 python3.2 python3.3 python3.4 dnl
python3.5 python3.6 python3.7 python3.8 python3 python])
[python2 python2.7 dnl
python dnl
python3 python3.0 python3.1 python3.2 python3.3 dnl
python3.4 python3.5 python3.6 python3.7 python3.8])
AC_ARG_VAR([PYTHON], [the Python interpreter])