MarcoFalke 33480c6366 Merge #15285: build: Prefer Python 3.4 even if newer versions are present on the system ...

0890339fb3 build: prefer python3.4 even if newer versions are present on the system (Sjors Provoost)

Pull request description:

  Python 3.4 is this mimimum supported version according to [doc/dependencies.md](https://github.com/bitcoin/bitcoin/blob/master/doc/dependencies.md)

  Systems with [PyEnv](https://github.com/pyenv/pyenv) ensure (via [.python-version](https://github.com/bitcoin/bitcoin/blob/master/.python-version)) that Python 3.4 is used
  for the functional tests. However `make check` calls `bitcoin-util-test.py`
  using the Python command found by `configure.ac`, which looks system wide.

  On systems with multiple versions of Python this would cause `make check`
  to fail, as it tries to call a version of Python that PyEnv blocks.

  This is solved by preferring python3.4 in `configure.ac`.

  I missed this in #14884, so ideally this should be tagged 0.18

Tree-SHA512: b7487081a1ee7c2cb672a2e4bc1943ec8d23825fb941e567cb00fb123e6d59b1d8b7ddbf97d48aca770b9ddb9eacbfe73d8ac8cb1e1cdc34587ee1cee9929840

2019-02-14 16:42:23 -05:00

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