vendor: EMSDK 6.0.6 scripts at e26beb67ef18a37d71d522d8b7096b20a4d3d0f9
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Gitea Mirror Bot
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BUILD_FILE_CONTENT_TEMPLATE = """
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package(default_visibility = ['//visibility:public'])
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exports_files(['emscripten_config'])
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"""
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BUILD_FILE_USE_BUILTIN_CACHE = """
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alias(
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name = "emscripten_cache",
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actual = "{}//:builtin_cache",
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)
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"""
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BUILD_FILE_USE_SECONDARY_CACHE = """
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filegroup(
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name = "emscripten_cache",
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srcs = glob(["cache/**"]),
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visibility = ["//visibility:public"],
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)
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"""
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EMBUILDER_CONFIG_TEMPLATE = """
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CACHE = '{cache}'
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BINARYEN_ROOT = '{binaryen_root}'
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LLVM_ROOT = '{llvm_root}'
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"""
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def get_root_and_script_ext(repository_ctx):
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if repository_ctx.os.name.startswith("linux"):
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if "amd64" in repository_ctx.os.arch or "x86_64" in repository_ctx.os.arch:
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return (repository_ctx.path(Label("@emscripten_bin_linux//:BUILD.bazel")).dirname, "")
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elif "aarch64" in repository_ctx.os.arch:
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return (repository_ctx.path(Label("@emscripten_bin_linux_arm64//:BUILD.bazel")).dirname, "")
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else:
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fail("Unsupported architecture for Linux")
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elif repository_ctx.os.name.startswith("mac"):
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if "amd64" in repository_ctx.os.arch or "x86_64" in repository_ctx.os.arch:
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return (repository_ctx.path(Label("@emscripten_bin_mac//:BUILD.bazel")).dirname, "")
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elif "aarch64" in repository_ctx.os.arch:
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return (repository_ctx.path(Label("@emscripten_bin_mac_arm64//:BUILD.bazel")).dirname, "")
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else:
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fail("Unsupported architecture for MacOS")
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elif repository_ctx.os.name.startswith("windows"):
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return (repository_ctx.path(Label("@emscripten_bin_win//:BUILD.bazel")).dirname, ".exe")
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else:
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fail("Unsupported operating system")
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def get_bin_deps_repo_name(repository_ctx):
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if repository_ctx.os.name.startswith("linux"):
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if "amd64" in repository_ctx.os.arch or "x86_64" in repository_ctx.os.arch:
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return "@emscripten_bin_linux"
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elif "aarch64" in repository_ctx.os.arch:
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return "@emscripten_bin_linux_arm64"
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else:
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fail("Unsupported architecture for Linux")
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elif repository_ctx.os.name.startswith("mac"):
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if "amd64" in repository_ctx.os.arch or "x86_64" in repository_ctx.os.arch:
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return "@emscripten_bin_mac"
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elif "aarch64" in repository_ctx.os.arch:
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return "@emscripten_bin_mac_arm64"
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else:
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fail("Unsupported architecture for MacOS")
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elif repository_ctx.os.name.startswith("windows"):
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return "@emscripten_bin_win"
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else:
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fail("Unsupported operating system")
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def _emscripten_cache_repository_impl(repository_ctx):
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# Read the default emscripten configuration file
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default_config = repository_ctx.read(
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repository_ctx.path(
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Label("@emsdk//emscripten_toolchain:default_config"),
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),
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)
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repo_metadata = None
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build_file_content = BUILD_FILE_CONTENT_TEMPLATE
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use_builtin_cache = True
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if repository_ctx.attr.prebuilt_cache_url:
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repository_ctx.download_and_extract(
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url = repository_ctx.attr.prebuilt_cache_url,
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output = "cache",
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sha256 = repository_ctx.attr.prebuilt_cache_sha256,
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stripPrefix = repository_ctx.attr.prebuilt_cache_strip_prefix,
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)
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# Use the prebuilt cache
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use_builtin_cache = False
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repo_metadata = repository_ctx.repo_metadata(reproducible = True)
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elif repository_ctx.attr.targets or repository_ctx.attr.configuration:
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root, script_ext = get_root_and_script_ext(repository_ctx)
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llvm_root = root.get_child("bin")
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cache = repository_ctx.path("cache")
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# Create configuration file
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embuilder_config_content = EMBUILDER_CONFIG_TEMPLATE.format(
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cache = cache,
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binaryen_root = root,
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llvm_root = llvm_root,
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)
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repository_ctx.file("embuilder_config", embuilder_config_content)
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embuilder_config_path = repository_ctx.path("embuilder_config")
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embuilder_path = "{}{}".format(root.get_child("emscripten").get_child("embuilder"), script_ext)
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# Prepare the command line
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if repository_ctx.attr.targets:
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targets = repository_ctx.attr.targets
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else:
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# If no targets are requested, build everything
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targets = ["ALL"]
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flags = ["--em-config", embuilder_config_path] + repository_ctx.attr.configuration
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embuilder_args = [embuilder_path] + flags + ["build"] + targets
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# Run embuilder
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repository_ctx.report_progress("Building secondary cache")
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result = repository_ctx.execute(
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embuilder_args,
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quiet = False,
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environment = {
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"EM_IGNORE_SANITY": "1",
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"EM_NODE_JS": "empty",
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},
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)
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if result.return_code != 0:
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fail("Embuilder exited with a non-zero return code")
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use_builtin_cache = False
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if use_builtin_cache:
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build_file_content += BUILD_FILE_USE_BUILTIN_CACHE.format(get_bin_deps_repo_name(repository_ctx))
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else:
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default_config += 'CACHE = os.path.join(os.path.dirname(os.environ["EM_CONFIG_PATH"]), "cache")\n'
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build_file_content += BUILD_FILE_USE_SECONDARY_CACHE
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# Create the configuration file for the toolchain and export
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repository_ctx.file("emscripten_config", default_config)
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repository_ctx.file("BUILD.bazel", build_file_content)
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return repo_metadata
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_emscripten_cache_repository = repository_rule(
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implementation = _emscripten_cache_repository_impl,
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attrs = {
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"configuration": attr.string_list(),
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"targets": attr.string_list(),
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"prebuilt_cache_url": attr.string(),
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"prebuilt_cache_sha256": attr.string(),
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"prebuilt_cache_strip_prefix": attr.string(),
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},
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)
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def _emscripten_cache_impl(ctx):
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all_configuration = []
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all_targets = []
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prebuilt_cache_url = ""
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prebuilt_cache_sha256 = ""
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prebuilt_cache_strip_prefix = ""
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prebuilt_cache_seen = False
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for mod in ctx.modules:
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for configuration in mod.tags.configuration:
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all_configuration += configuration.flags
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for targets in mod.tags.targets:
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all_targets += targets.targets
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for prebuilt_cache in mod.tags.prebuilt_cache:
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if prebuilt_cache_seen:
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fail("Only one prebuilt_cache tag is allowed")
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prebuilt_cache_url = prebuilt_cache.http_archive_url
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prebuilt_cache_sha256 = prebuilt_cache.sha256
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prebuilt_cache_strip_prefix = prebuilt_cache.strip_prefix
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prebuilt_cache_seen = True
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_emscripten_cache_repository(
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name = "emscripten_cache",
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configuration = all_configuration,
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targets = all_targets,
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prebuilt_cache_url = prebuilt_cache_url,
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prebuilt_cache_sha256 = prebuilt_cache_sha256,
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prebuilt_cache_strip_prefix = prebuilt_cache_strip_prefix,
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)
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emscripten_cache = module_extension(
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tag_classes = {
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"configuration": tag_class(attrs = {"flags": attr.string_list()}),
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"targets": tag_class(attrs = {"targets": attr.string_list()}),
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"prebuilt_cache": tag_class(attrs = {
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"http_archive_url": attr.string(mandatory = True),
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"sha256": attr.string(mandatory = True),
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"strip_prefix": attr.string(),
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}),
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},
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implementation = _emscripten_cache_impl,
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)
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