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c164b88ac1
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
71 lines
2 KiB
Meson
71 lines
2 KiB
Meson
cc = meson.get_compiler('c')
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# Find flex, configure lex generator
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flex_cdata = configuration_data()
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flex_min_version='2.5.31'
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flex = find_program('flex', 'win_flex')
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get_flex_version = find_program('get_flex_version.py')
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flexversion_res = run_command([get_flex_version, flex], check: true)
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flexversion = flexversion_res.stdout().strip()
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if flexversion.version_compare('<' + flex_min_version)
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error('flex version @0@ >= @1@: NO'.format(flexversion, flex_min_version))
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else
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message('flex version @0@ >= @1@: YES'.format(flexversion, flex_min_version))
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endif
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flex_cdata.set('FLEX', flex.path())
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if cc.get_id() == 'msvc'
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flex_cdata.set('FLEX_ARGS', '--nounistd')
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else
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flex_cdata.set('FLEX_ARGS', '')
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endif
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gen_lex = configure_file(input : 'gen_lex.py.in',
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output : 'gen_lex.py',
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configuration : flex_cdata)
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# Find bison, configure grammar generator
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bison_cdata = configuration_data()
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bison_min_version='2.4'
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bison = find_program('bison', 'win_bison')
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bversion_res = run_command([bison, '--version'])
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if bversion_res.returncode() != 0
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error('Could not get bison version (@0@)'.format(bversion_res.stderr()))
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endif
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bversion = bversion_res.stdout().split('\n')[0].split(' ')[-1].strip()
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if bversion.version_compare('<' + bison_min_version)
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error('bison version @0@ >= @1@: NO'.format(bversion, bison_min_version))
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else
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message('bison version @0@ >= @1@: YES'.format(bversion, bison_min_version))
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endif
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bison_cdata.set('BISON', bison.path())
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bison_cdata.set('BISON_ARGS', '')
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gen_grammar = configure_file(input : 'gen_grammar.py.in',
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output : 'gen_grammar.py',
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configuration : bison_cdata)
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# Custom targets
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parser = custom_target('parselex',
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input : 'parse.l',
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output : ['lex.priv_gst_parse_yy.c', 'parse_lex.h'],
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command : [python3, gen_lex, '@OUTPUT0@', '@OUTPUT1@', '@INPUT@', 'DUMMY']
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)
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grammar = custom_target('parsegrammar',
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input : 'grammar.y',
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output : ['grammar.tab.c', 'grammar.tab.h'],
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command : [python3, gen_grammar, '@OUTPUT0@', '@OUTPUT1@', '@INPUT@'],
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depends : [parser],
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)
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gst_parse_sources += [parser, grammar]
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