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73 lines
2.2 KiB
Plaintext
73 lines
2.2 KiB
Plaintext
# Copyright 2005-2016 The Mumble Developers. All rights reserved.
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# Use of this source code is governed by a BSD-style license
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# that can be found in the LICENSE file at the root of the
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# Mumble source tree or at <https://www.mumble.info/LICENSE>.
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# This .pri files finds a suitable Python binary on the system.
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#
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# It exposes the found Python binary as the 'PYTHON' qmake variable.
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# This variable contains the absolute path to a working Python binary.
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#
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# Why do we need to do this?
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#
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# Some systems (for example, OpenBSD's Python port), are not
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# PEP 394 (https://www.python.org/dev/peps/pep-0394/) compliant.
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#
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# This means that there is no 'python', 'python2' or 'python3'
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# binaries in the $PATH.
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#
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# On those systems, we can't rely on a '#!/usr/bin/env python2'
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# or similar shebang. We have to query the system for versioned
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# Python binaries like "python2.7" instead.
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#
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# This file does that, by searching in $PATH using the 'which'
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# tool.
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#
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# If no binary is found, an error is shown to the user.
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#
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# This script also supports setting a MUMBLE_PYTHON environment
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# variable to specify an absolute path to a Python binary to use.
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# Setting this environment variable overrides any querying.
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win32 {
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PYTHON = $$(MUMBLE_PYTHON)
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isEmpty(PYTHON) {
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PYTHON=python
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}
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} else {
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PYTHON = $$(MUMBLE_PYTHON)
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isEmpty(PYTHON) {
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PYTHON=$$system(which python 2>/dev/null)
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}
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isEmpty(PYTHON) {
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PYTHON=$$system(which python2 2>/dev/null)
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}
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isEmpty(PYTHON) {
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PYTHON=$$system(which python2.7 2>/dev/null)
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}
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isEmpty(PYTHON) {
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PYTHON=$$system(which python3 2>/dev/null)
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}
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isEmpty(PYTHON) {
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PYTHON=$$system(which python3.0 2>/dev/null)
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}
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isEmpty(PYTHON) {
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PYTHON=$$system(which python3.1 2>/dev/null)
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}
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isEmpty(PYTHON) {
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PYTHON=$$system(which python3.2 2>/dev/null)
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}
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isEmpty(PYTHON) {
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PYTHON=$$system(which python3.3 2>/dev/null)
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}
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isEmpty(PYTHON) {
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PYTHON=$$system(which python3.4 2>/dev/null)
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}
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isEmpty(PYTHON) {
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PYTHON=$$system(which python3.5 2>/dev/null)
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}
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isEmpty(PYTHON) {
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error("Unable to find the system's Python binary. Some scripts invoked during the Mumble build use Python. You can manually specify it via the MUMBLE_PYTHON environment variable (either 2 or 3).")
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}
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}
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