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mpv/waftools/syms.py

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build: include a copy of syms.py from upstream waf The alternatives to copying this small bit of code are even worse. This is unmodified, except for the added line 3.
2014-02-10 20:08:37 +00:00
#! /usr/bin/env python
# encoding: utf-8
build: list exported symbols explicitly Instead of using a regex to match names to be exported from the libmpv dynamic shared library, use a libmpv.def file, which lists all exported functions explicitly. This reduces the platform specifics in syms.py. I'm not sure if the separate compile_sym task is still needed (it could probably be collapsed, which would concentrate the platform specifics into one place).
2014-08-05 00:21:29 +00:00
# Original source: waflib/extras/syms.py from waf git 610d0d59f (New BSD License)
build: include a copy of syms.py from upstream waf The alternatives to copying this small bit of code are even worse. This is unmodified, except for the added line 3.
2014-02-10 20:08:37 +00:00
"""
build: list exported symbols explicitly Instead of using a regex to match names to be exported from the libmpv dynamic shared library, use a libmpv.def file, which lists all exported functions explicitly. This reduces the platform specifics in syms.py. I'm not sure if the separate compile_sym task is still needed (it could probably be collapsed, which would concentrate the platform specifics into one place).
2014-08-05 00:21:29 +00:00
set the list of symbols exported from a dynamic library
build: include a copy of syms.py from upstream waf The alternatives to copying this small bit of code are even worse. This is unmodified, except for the added line 3.
2014-02-10 20:08:37 +00:00
to use the tool, do something like:
def build(ctx):
build: list exported symbols explicitly Instead of using a regex to match names to be exported from the libmpv dynamic shared library, use a libmpv.def file, which lists all exported functions explicitly. This reduces the platform specifics in syms.py. I'm not sure if the separate compile_sym task is still needed (it could probably be collapsed, which would concentrate the platform specifics into one place).
2014-08-05 00:21:29 +00:00
ctx(features='c cshlib syms', source='a.c b.c', export_symbols_def='syms.def', target='testlib')
build: include a copy of syms.py from upstream waf The alternatives to copying this small bit of code are even worse. This is unmodified, except for the added line 3.
2014-02-10 20:08:37 +00:00
build: list exported symbols explicitly Instead of using a regex to match names to be exported from the libmpv dynamic shared library, use a libmpv.def file, which lists all exported functions explicitly. This reduces the platform specifics in syms.py. I'm not sure if the separate compile_sym task is still needed (it could probably be collapsed, which would concentrate the platform specifics into one place).
2014-08-05 00:21:29 +00:00
only the symbols listed in the file syms.def will be exported.
build: include a copy of syms.py from upstream waf The alternatives to copying this small bit of code are even worse. This is unmodified, except for the added line 3.
2014-02-10 20:08:37 +00:00
"""
from waflib.Context import STDOUT
from waflib.Task import Task
from waflib.Errors import WafError
from waflib.TaskGen import feature, after_method
class compile_sym(Task):
build: syms: reindent 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.
2014-08-05 10:53:27 +00:00
def run(self):
lsyms = []
for line in self.inputs[0].read().split():
lsyms.append(line.strip())
lsyms.sort()
if self.env.DEST_BINFMT == 'pe':
self.outputs[0].write('EXPORTS\n' + '\n'.join(lsyms))
Kill all tabs I hate tabs. This replaces all tabs in all source files with spaces. The only exception is old-makefile. The replacement was made by running the GNU coreutils "expand" command on every file. Since the replacement was automatic, it's possible that some formatting was destroyed (but perhaps only if it was assuming that the end of a tab does not correspond to aligning the end to multiples of 8 spaces).
2014-04-13 16:00:51 +00:00
elif self.env.DEST_BINFMT == 'elf':
build: syms: reindent 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.
2014-08-05 10:53:27 +00:00
self.outputs[0].write('{ global:\n' + ';\n'.join(lsyms) + ";\nlocal: *; };\n")
Kill all tabs I hate tabs. This replaces all tabs in all source files with spaces. The only exception is old-makefile. The replacement was made by running the GNU coreutils "expand" command on every file. Since the replacement was automatic, it's possible that some formatting was destroyed (but perhaps only if it was assuming that the end of a tab does not correspond to aligning the end to multiples of 8 spaces).
2014-04-13 16:00:51 +00:00
elif self.env.DEST_BINFMT == 'mac-o':
build: syms: reindent 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.
2014-08-05 10:53:27 +00:00
self.outputs[0].write('\n'.join("_"+sym for sym in lsyms) + '\n')
Kill all tabs I hate tabs. This replaces all tabs in all source files with spaces. The only exception is old-makefile. The replacement was made by running the GNU coreutils "expand" command on every file. Since the replacement was automatic, it's possible that some formatting was destroyed (but perhaps only if it was assuming that the end of a tab does not correspond to aligning the end to multiples of 8 spaces).
2014-04-13 16:00:51 +00:00
else:
build: syms: reindent 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.
2014-08-05 10:53:27 +00:00
raise WafError('NotImplemented')
build: include a copy of syms.py from upstream waf The alternatives to copying this small bit of code are even worse. This is unmodified, except for the added line 3.
2014-02-10 20:08:37 +00:00
build: syms: reindent 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.
2014-08-05 10:53:27 +00:00
@feature('syms')
build: fix build for waf 2.0 Thanks to ita1024 for the patch. Fixes https://github.com/mpv-player/mpv/issues/4894 Signed-off-by: wm4 <wm4@nowhere>
2017-09-20 06:59:37 +00:00
@after_method('process_source', 'process_use', 'apply_link', 'process_uselib_local', 'propagate_uselib_vars')
build: syms: reindent 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.
2014-08-05 10:53:27 +00:00
def do_the_symbol_stuff(self):
tsk = self.create_task('compile_sym',
[self.path.find_node(self.export_symbols_def)],
self.path.find_or_declare(getattr(self, 'sym_filename', self.target + '.def')))
self.link_task.set_run_after(tsk)
self.link_task.dep_nodes.append(tsk.outputs[0])
if 'msvc' in (self.env.CC_NAME, self.env.CXX_NAME):
self.link_task.env.append_value('LINKFLAGS', ['/def:' + tsk.outputs[0].bldpath()])
elif self.env.DEST_BINFMT == 'pe': #gcc on windows takes *.def as an additional input
self.link_task.inputs.append(tsk.outputs[0])
elif self.env.DEST_BINFMT == 'elf':
self.link_task.env.append_value('LINKFLAGS', ['-Wl,-version-script', '-Wl,' + tsk.outputs[0].bldpath()])
elif self.env.DEST_BINFMT == 'mac-o':
self.link_task.env.append_value('LINKFLAGS', ['-exported_symbols_list', tsk.outputs[0].bldpath()])
else:
raise WafError('NotImplemented')