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111 lines
3.6 KiB
Python
111 lines
3.6 KiB
Python
# Copyright 2020 MongoDB Inc.
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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import SCons
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# TODO: DRY this with abilink.py by moving duplicated code out to a common
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# support module.
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def _detect(env):
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try:
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tapi = env["TAPI"]
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if not tapi:
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return None
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return tapi
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except KeyError:
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pass
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return env.WhereIs("tapi")
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def _add_emitter(builder):
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base_emitter = builder.emitter
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def new_emitter(target, source, env):
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new_targets = []
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for t in target:
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base, ext = SCons.Util.splitext(str(t))
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if not ext == env["SHLIBSUFFIX"]:
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continue
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tbd_target = (t.builder.target_factory or env.File)(base + ".tbd")
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new_targets.append(tbd_target)
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tbd_no_uuid_target = (t.builder.target_factory or env.File)(base + ".tbd.no_uuid")
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new_targets.append(tbd_no_uuid_target)
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setattr(t.attributes, "tbd", tbd_no_uuid_target)
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targets = target + new_targets
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return (targets, source)
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new_emitter = SCons.Builder.ListEmitter([base_emitter, new_emitter])
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builder.emitter = new_emitter
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def _add_scanner(builder):
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old_scanner = builder.target_scanner
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path_function = old_scanner.path_function
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def new_scanner(node, env, path):
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return (getattr(env.Entry(o).attributes, "tbd", o) for o in old_scanner(node, env, path))
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builder.target_scanner = SCons.Scanner.Scanner(
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function=new_scanner,
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path_function=path_function,
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)
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def _add_action(builder):
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actions = builder.action
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# The first inbocation of TAPI is to make the tbd file that the
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# linker will actually use when linking. This must contain the
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# dylib UUID or the link will fail. The second creates a version
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# that does not contain the UUID. We use that as the ABI file. If
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# invoking TAPI proves to be expensive, we could address this by
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# instead post-processing the "real" .tbd file to strip out the
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# UUID, and then potentially even feed it into a hash algorithm.
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builder.action = actions + SCons.Action.Action(
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[
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"$TAPI stubify -o ${TARGET.base}.tbd ${TARGET}",
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"$TAPI stubify --no-uuids -o ${TARGET.base}.tbd.no_uuid ${TARGET}",
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]
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)
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def exists(env):
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result = _detect(env) is not None
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return result
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def generate(env):
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if not exists(env):
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return
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builder = env["BUILDERS"]["SharedLibrary"]
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_add_emitter(builder)
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_add_action(builder)
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_add_scanner(builder)
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_add_scanner(env["BUILDERS"]["Program"])
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_add_scanner(env["BUILDERS"]["LoadableModule"])
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