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Different builds of Flex on different platforms output different strings in --version. For example: macOS: flex 2.5.35 Apple(flex-31) Windows: win_flex.exe 2.6.4 C:\Program Files (x86)\GnuWin32\bin\flex.EXE version 2.5.4 We need to look for a string that looks like a version, which means a regex till https://github.com/mesonbuild/meson/issues/1609 is fixed. Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/issues/356
12 lines
295 B
Python
12 lines
295 B
Python
#!/usr/bin/env python3
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import re
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import sys
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import subprocess
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flex = sys.argv[1]
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out = subprocess.check_output([flex, '--version'], universal_newlines=True,
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stderr=subprocess.STDOUT, stdin=subprocess.DEVNULL)
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print(re.search(r'(\d+\.\d+(\.\d+)?)', out).group())
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