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ADD: added new version of protobuf

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This commit is contained in:
Henry Winkel
2022-12-20 10:09:28 +01:00
parent 4a79559129
commit 1e2b3dda7b
1513 changed files with 123720 additions and 83381 deletions
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306
libs/protobuf/pkg/cc_dist_library.bzl
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@@ -3,32 +3,12 @@
load("@rules_cc//cc:action_names.bzl", cc_action_names = "ACTION_NAMES")
load("@rules_cc//cc:find_cc_toolchain.bzl", "find_cc_toolchain")
################################################################################
# Archive/linking support
################################################################################
def _collect_linker_input_objects(dep_label, cc_info, objs, pic_objs):
"""Accumulate .o and .pic.o files into `objs` and `pic_objs`."""
link_ctx = cc_info.linking_context
if link_ctx == None:
return
linker_inputs = link_ctx.linker_inputs.to_list()
for link_input in linker_inputs:
if link_input.owner != dep_label:
# This is a transitive dep: skip it.
continue
for lib in link_input.libraries:
objs.extend(lib.objects or [])
pic_objs.extend(lib.pic_objects or [])
# Creates an action to build the `output_file` static library (archive)
# using `object_files`.
def _create_archive_action(
ctx,
feature_configuration,
cc_toolchain_info,
cc_toolchain,
output_file,
object_files):
# Based on Bazel's src/main/starlark/builtins_bzl/common/cc/cc_import.bzl:
@@ -36,7 +16,7 @@ def _create_archive_action(
# Build the command line and add args for all of the input files:
archiver_variables = cc_common.create_link_variables(
feature_configuration = feature_configuration,
cc_toolchain = cc_toolchain_info,
cc_toolchain = cc_toolchain,
output_file = output_file.path,
is_using_linker = False,
)
@@ -68,23 +48,80 @@ def _create_archive_action(
inputs = depset(
direct = object_files,
transitive = [
cc_toolchain_info.all_files,
cc_toolchain.all_files,
],
),
use_default_shell_env = False,
use_default_shell_env = True,
outputs = [output_file],
mnemonic = "CppArchiveDist",
)
def _create_dso_link_action(
ctx,
feature_configuration,
cc_toolchain_info,
object_files,
pic_object_files):
# Implementation for cc_dist_library rule.
def _cc_dist_library_impl(ctx):
cc_toolchain_info = find_cc_toolchain(ctx)
if cc_toolchain_info.ar_executable == None:
return []
feature_configuration = cc_common.configure_features(
ctx = ctx,
cc_toolchain = cc_toolchain_info,
)
# Collect the set of object files from the immediate deps.
objs = []
pic_objs = []
for dep in ctx.attr.deps:
if CcInfo not in dep:
continue
link_ctx = dep[CcInfo].linking_context
if link_ctx == None:
continue
linker_inputs = link_ctx.linker_inputs.to_list()
for link_input in linker_inputs:
if link_input.owner != dep.label:
# This is a transitive dep: skip it.
continue
for lib in link_input.libraries:
objs.extend(lib.objects or [])
pic_objs.extend(lib.pic_objects or [])
# For static libraries, build separately with and without pic.
stemname = "lib" + ctx.label.name
outputs = []
if len(objs) > 0:
archive_out = ctx.actions.declare_file(stemname + ".a")
_create_archive_action(
ctx,
feature_configuration,
cc_toolchain_info,
archive_out,
objs,
)
outputs.append(archive_out)
if len(pic_objs) > 0:
pic_archive_out = ctx.actions.declare_file(stemname + ".pic.a")
_create_archive_action(
ctx,
feature_configuration,
cc_toolchain_info,
pic_archive_out,
pic_objs,
)
outputs.append(pic_archive_out)
# For dynamic libraries, use the `cc_common.link` command to ensure
# everything gets built correctly according to toolchain definitions.
compilation_outputs = cc_common.create_compilation_outputs(
objects = depset(object_files),
pic_objects = depset(pic_object_files),
objects = depset(objs),
pic_objects = depset(pic_objs),
)
link_output = cc_common.link(
actions = ctx.actions,
@@ -97,8 +134,6 @@ def _create_dso_link_action(
)
library_to_link = link_output.library_to_link
outputs = []
# Note: library_to_link.dynamic_library and interface_library are often
# symlinks in the solib directory. For DefaultInfo, prefer reporting
# the resolved artifact paths.
@@ -112,207 +147,6 @@ def _create_dso_link_action(
elif library_to_link.interface_library != None:
outputs.append(library_to_link.interface_library)
return outputs
################################################################################
# Source file/header support
################################################################################
CcFileList = provider(
doc = "List of files to be built into a library.",
fields = {
# As a rule of thumb, `hdrs` and `textual_hdrs` are the files that
# would be installed along with a prebuilt library.
"hdrs": "public header files, including those used by generated code",
"textual_hdrs": "files which are included but are not self-contained",
# The `internal_hdrs` are header files which appear in `srcs`.
# These are only used when compiling the library.
"internal_hdrs": "internal header files (only used to build .cc files)",
"srcs": "source files",
},
)
def _flatten_target_files(targets):
return depset(transitive = [target.files for target in targets])
files = []
for target in targets:
files.extend(target.files.to_list())
return files
def _cc_file_list_aspect_impl(target, ctx):
# Extract sources from a `cc_library` (or similar):
if CcInfo not in target:
return []
# We're going to reach directly into the attrs on the traversed rule.
rule_attr = ctx.rule.attr
# CcInfo is a proxy for what we expect this rule to look like.
# However, some deps may expose `CcInfo` without having `srcs`,
# `hdrs`, etc., so we use `getattr` to handle that gracefully.
internal_hdrs = []
srcs = []
# Filter `srcs` so it only contains source files. Headers will go
# into `internal_headers`.
for src in _flatten_target_files(getattr(rule_attr, "srcs", [])).to_list():
if src.extension.lower() in ["c", "cc", "cpp", "cxx"]:
srcs.append(src)
else:
internal_hdrs.append(src)
return [CcFileList(
hdrs = _flatten_target_files(getattr(rule_attr, "hdrs", depset())),
textual_hdrs = _flatten_target_files(getattr(
rule_attr,
"textual_hdrs",
depset(),
)),
internal_hdrs = depset(internal_hdrs),
srcs = depset(srcs),
)]
cc_file_list_aspect = aspect(
doc = """
Aspect to provide the list of sources and headers from a rule.
Output is CcFileList. Example:
cc_library(
name = "foo",
srcs = [
"foo.cc",
"foo_internal.h",
],
hdrs = ["foo.h"],
textual_hdrs = ["foo_inl.inc"],
)
# produces:
# CcFileList(
# hdrs = depset([File("foo.h")]),
# textual_hdrs = depset([File("foo_inl.inc")]),
# internal_hdrs = depset([File("foo_internal.h")]),
# srcs = depset([File("foo.cc")]),
# )
""",
implementation = _cc_file_list_aspect_impl,
)
################################################################################
# Rule impl
################################################################################
def _collect_inputs(deps):
"""Collects files from a list of immediate deps.
This rule collects source files and linker inputs for C++ deps. Only
these immediate deps are considered, not transitive deps.
The return value is a struct with object files (linker inputs),
partitioned by PIC and non-pic, and the rules' source and header files:
struct(
objects = ..., # non-PIC object files
pic_objects = ..., # PIC objects
cc_file_list = ..., # a CcFileList
)
Args:
deps: Iterable of immediate deps. These will be treated as the "inputs,"
but not the transitive deps.
Returns:
A struct with linker inputs, source files, and header files.
"""
objs = []
pic_objs = []
# The returned CcFileList will contain depsets of the deps' file lists.
# These lists hold `depset()`s from each of `deps`.
srcs = []
hdrs = []
internal_hdrs = []
textual_hdrs = []
for dep in deps:
if CcInfo in dep:
_collect_linker_input_objects(
dep.label,
dep[CcInfo],
objs,
pic_objs,
)
if CcFileList in dep:
cfl = dep[CcFileList]
srcs.append(cfl.srcs)
hdrs.append(cfl.hdrs)
internal_hdrs.append(cfl.internal_hdrs)
textual_hdrs.append(cfl.textual_hdrs)
return struct(
objects = objs,
pic_objects = pic_objs,
cc_file_list = CcFileList(
srcs = depset(transitive = srcs),
hdrs = depset(transitive = hdrs),
internal_hdrs = depset(transitive = internal_hdrs),
textual_hdrs = depset(transitive = textual_hdrs),
),
)
# Implementation for cc_dist_library rule.
def _cc_dist_library_impl(ctx):
cc_toolchain_info = find_cc_toolchain(ctx)
feature_configuration = cc_common.configure_features(
ctx = ctx,
cc_toolchain = cc_toolchain_info,
)
inputs = _collect_inputs(ctx.attr.deps)
# For static libraries, build separately with and without pic.
stemname = "lib" + ctx.label.name
outputs = []
if len(inputs.objects) > 0:
archive_out = ctx.actions.declare_file(stemname + ".a")
_create_archive_action(
ctx,
feature_configuration,
cc_toolchain_info,
archive_out,
inputs.objects,
)
outputs.append(archive_out)
if len(inputs.pic_objects) > 0:
pic_archive_out = ctx.actions.declare_file(stemname + ".pic.a")
_create_archive_action(
ctx,
feature_configuration,
cc_toolchain_info,
pic_archive_out,
inputs.pic_objects,
)
outputs.append(pic_archive_out)
# For dynamic libraries, use the `cc_common.link` command to ensure
# everything gets built correctly according to toolchain definitions.
outputs.extend(_create_dso_link_action(
ctx,
feature_configuration,
cc_toolchain_info,
inputs.objects,
inputs.pic_objects,
))
# We could expose the libraries for use from cc rules:
#
# linking_context = cc_common.create_linking_context(
@@ -335,7 +169,6 @@ def _cc_dist_library_impl(ctx):
return [
DefaultInfo(files = depset(outputs)),
inputs.cc_file_list,
]
cc_dist_library = rule(
@@ -381,7 +214,6 @@ Example:
"Only these targets' compilation outputs will be " +
"included (i.e., the transitive dependencies are not " +
"included in the output)."),
aspects = [cc_file_list_aspect],
),
"linkopts": attr.string_list(
doc = ("Add these flags to the C++ linker command when creating " +