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63 lines
2.0 KiB
63 lines
2.0 KiB
4 months ago
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# Rules and macros to define a cc toolchain with a static libc.
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# Used to bootstrap cc development using the bionic lib build by Soong.
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# Rule: _libc_config
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# Provides information needed by CcToolchainConfigInfo to configure the cc_toolchain properly.
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# Macro: static_libc
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# Creates the libc_config target and filegroups needed by cc_toolchain.
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LibcConfigInfo = provider(fields = ["include_dirs", "system_libraries"])
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def _libc_config_impl(ctx):
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include_dirs = ctx.attr.include_dirs
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system_libraries = [file.path for file in ctx.files.system_libraries]
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provider = LibcConfigInfo(
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include_dirs = include_dirs,
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system_libraries = system_libraries,
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)
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return [provider]
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_libc_config = rule(
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implementation = _libc_config_impl,
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attrs = {
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"include_dirs": attr.string_list(default = []),
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"system_libraries": attr.label_list(default = [], allow_files = True),
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},
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)
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def static_libc(
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name,
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include_dirs = {},
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system_libraries = []):
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# Create the filegroups
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include_srcs = []
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include_globs = []
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for value in include_dirs.values():
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if "*" in value:
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# It must be a glob.
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include_globs.append(value)
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else:
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# Assume it's a label.
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include_srcs.append(value)
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native.filegroup(
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name = "%s_includes" % name,
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srcs = include_srcs + native.glob(include_globs),
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)
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native.filegroup(
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name = "%s_system_libraries" % name,
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srcs = system_libraries,
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)
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# Create the libc config.
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include_paths = [path for path in include_dirs.keys()]
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_libc_config(
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name = name,
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include_dirs = include_paths,
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system_libraries = system_libraries,
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)
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# Also create cc_library target for direct dependencies.
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native.cc_library(
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name = "%s_library" % name,
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hdrs = [
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":%s_includes" % name,
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],
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includes = include_paths,
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srcs = [
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":%s_system_libraries" % name,
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],
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)
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