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# Copyright 2023 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import re
def wrap_with_whole_archive(command, is_apple=False):
"""Modify and return `command` such that -LinkWrapper,add-whole-archive=X
becomes a linking inclusion X (-lX) but wrapped in whole-archive
modifiers."""
# We want to link rlibs as --whole-archive if they are part of a unit test
# target. This is determined by switch `-LinkWrapper,add-whole-archive`.
#
# TODO(danakj): If the linking command line gets too large we could move
# {{rlibs}} into the rsp file, but then this script needs to modify the rsp
# file instead of the command line.
def extract_libname(s):
m = re.match(r'-LinkWrapper,add-whole-archive=(.+)', s)
return m.group(1)
# The set of libraries we want to apply `--whole-archive`` to.
whole_archive_libs = [
extract_libname(x) for x in command
if x.startswith("-LinkWrapper,add-whole-archive=")
]
# Remove the arguments meant for consumption by this LinkWrapper script.
command = [x for x in command if not x.startswith("-LinkWrapper,")]
def has_any_suffix(string, suffixes):
for suffix in suffixes:
if string.endswith(suffix):
return True
return False
def wrap_libs_with(command, libnames, before, after):
out = []
for arg in command:
# The arg is a full path to a library, we look if the the library name (a
# suffix of the full arg) is one of `libnames`.
if has_any_suffix(arg, libnames):
out.extend([before, arg])
if after:
out.append(after)
else:
out.append(arg)
return out
if is_apple:
# Apply -force_load to the libraries that desire it.
return wrap_libs_with(command, whole_archive_libs, "-Wl,-force_load", None)
else:
# Apply --whole-archive to the libraries that desire it.
return wrap_libs_with(command, whole_archive_libs, "-Wl,--whole-archive",
"-Wl,--no-whole-archive")
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