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HEADER_DEP_SUFFIX = "_header_dep"
LINK_DEP_SUFFIX = "_link_dep"
def create_header_dep_impl(ctx):
compilation_context = cc_common.create_compilation_context(
includes = depset(transitive = [header_dep[CcInfo].compilation_context.includes for header_dep in ctx.attr.header_deps]),
headers = depset(transitive = [header_dep[CcInfo].compilation_context.headers for header_dep in ctx.attr.header_deps]),
)
return CcInfo(compilation_context = compilation_context)
create_header_dep = rule(
create_header_dep_impl,
attrs = {
"header_deps": attr.label_list(providers = [CcInfo]),
},
doc = "create header only CcInfo",
fragments = ["cpp"],
)
def create_link_dep_impl(ctx):
deps = []
for dep in ctx.attr.link_deps:
if dep[CcInfo].linking_context:
for input in dep[CcInfo].linking_context.linker_inputs.to_list():
for library in input.libraries:
if library.dynamic_library:
dep = library.resolved_symlink_dynamic_library.path
if dep not in deps:
deps.append(library.resolved_symlink_dynamic_library.path)
if library.static_library:
dep = library.static_library.path
if dep not in deps:
deps.append(library.static_library.path)
python = ctx.toolchains["@bazel_tools//tools/python:toolchain_type"].py3_runtime
link_list = ctx.actions.declare_file(ctx.attr.target_name + "_links.list")
ctx.actions.run(
executable = python.interpreter.path,
outputs = [link_list],
inputs = depset(transitive = [ctx.attr._link_list_writer.files, python.files]),
arguments = [ctx.attr._link_list_writer.files.to_list()[0].path, link_list.path] + deps,
mnemonic = "LinkListFile",
)
return DefaultInfo(files = depset([link_list]))
create_link_deps = rule(
create_link_dep_impl,
attrs = {
"target_name": attr.string(),
"link_deps": attr.label_list(providers = [CcInfo]),
"_link_list_writer": attr.label(allow_single_file = True, default = "//bazel:scons_link_list.py"),
},
doc = "create a psuedo target to query link deps for",
toolchains = ["@bazel_tools//tools/python:toolchain_type"],
)
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