mirror of
https://github.com/mpv-player/mpv
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8af0d9fec8
We avoided reindenting this in the past to allow merging upstream changes. In hindsight these are very unlikely and we are actually doing changes on the code, so it's better to have the correct indentation and formatting in our source file.
53 lines
2.2 KiB
Python
53 lines
2.2 KiB
Python
#! /usr/bin/env python
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# encoding: utf-8
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# Original source: waflib/extras/syms.py from waf git 610d0d59f (New BSD License)
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"""
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set the list of symbols exported from a dynamic library
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to use the tool, do something like:
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def build(ctx):
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ctx(features='c cshlib syms', source='a.c b.c', export_symbols_def='syms.def', target='testlib')
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only the symbols listed in the file syms.def will be exported.
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"""
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from waflib.Context import STDOUT
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from waflib.Task import Task
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from waflib.Errors import WafError
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from waflib.TaskGen import feature, after_method
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class compile_sym(Task):
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def run(self):
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lsyms = []
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for line in self.inputs[0].read().split():
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lsyms.append(line.strip())
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lsyms.sort()
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if self.env.DEST_BINFMT == 'pe':
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self.outputs[0].write('EXPORTS\n' + '\n'.join(lsyms))
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elif self.env.DEST_BINFMT == 'elf':
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self.outputs[0].write('{ global:\n' + ';\n'.join(lsyms) + ";\nlocal: *; };\n")
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elif self.env.DEST_BINFMT == 'mac-o':
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self.outputs[0].write('\n'.join("_"+sym for sym in lsyms) + '\n')
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else:
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raise WafError('NotImplemented')
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@feature('syms')
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@after_method('process_source', 'process_use', 'apply_link', 'process_uselib_local')
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def do_the_symbol_stuff(self):
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tsk = self.create_task('compile_sym',
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[self.path.find_node(self.export_symbols_def)],
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self.path.find_or_declare(getattr(self, 'sym_filename', self.target + '.def')))
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self.link_task.set_run_after(tsk)
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self.link_task.dep_nodes.append(tsk.outputs[0])
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if 'msvc' in (self.env.CC_NAME, self.env.CXX_NAME):
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self.link_task.env.append_value('LINKFLAGS', ['/def:' + tsk.outputs[0].bldpath()])
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elif self.env.DEST_BINFMT == 'pe': #gcc on windows takes *.def as an additional input
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self.link_task.inputs.append(tsk.outputs[0])
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elif self.env.DEST_BINFMT == 'elf':
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self.link_task.env.append_value('LINKFLAGS', ['-Wl,-version-script', '-Wl,' + tsk.outputs[0].bldpath()])
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elif self.env.DEST_BINFMT == 'mac-o':
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self.link_task.env.append_value('LINKFLAGS', ['-exported_symbols_list', tsk.outputs[0].bldpath()])
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else:
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raise WafError('NotImplemented')
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