mirror of https://github.com/mpv-player/mpv
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', 'propagate_uselib_vars')
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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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