sergeypdev
e80c619c04
git-subtree-dir: libs/emsdk git-subtree-split: 3bcf1dcd01f040f370e10fe673a092d9ed79ebb5
114 lines
4.3 KiB
Python
114 lines
4.3 KiB
Python
BUILD_FILE_CONTENT_TEMPLATE = """
|
|
package(default_visibility = ['//visibility:public'])
|
|
exports_files(['emscripten_config'])
|
|
"""
|
|
|
|
EMBUILDER_CONFIG_TEMPLATE = """
|
|
CACHE = '{cache}'
|
|
BINARYEN_ROOT = '{binaryen_root}'
|
|
LLVM_ROOT = '{llvm_root}'
|
|
"""
|
|
|
|
def get_root_and_script_ext(repository_ctx):
|
|
if repository_ctx.os.name.startswith("linux"):
|
|
if "amd64" in repository_ctx.os.arch or "x86_64" in repository_ctx.os.arch:
|
|
return (repository_ctx.path(Label("@emscripten_bin_linux//:BUILD.bazel")).dirname, "")
|
|
elif "aarch64" in repository_ctx.os.arch:
|
|
return (repository_ctx.path(Label("@emscripten_bin_linux_arm64//:BUILD.bazel")).dirname, "")
|
|
else:
|
|
fail("Unsupported architecture for Linux")
|
|
elif repository_ctx.os.name.startswith("mac"):
|
|
if "amd64" in repository_ctx.os.arch or "x86_64" in repository_ctx.os.arch:
|
|
return (repository_ctx.path(Label("@emscripten_bin_mac//:BUILD.bazel")).dirname, "")
|
|
elif "aarch64" in repository_ctx.os.arch:
|
|
return (repository_ctx.path(Label("@emscripten_bin_mac_arm64//:BUILD.bazel")).dirname, "")
|
|
else:
|
|
fail("Unsupported architecture for MacOS")
|
|
elif repository_ctx.os.name.startswith("windows"):
|
|
return (repository_ctx.path(Label("@emscripten_bin_win//:BUILD.bazel")).dirname, ".bat")
|
|
else:
|
|
fail("Unsupported operating system")
|
|
|
|
def _emscripten_cache_repository_impl(repository_ctx):
|
|
# Read the default emscripten configuration file
|
|
default_config = repository_ctx.read(
|
|
repository_ctx.path(
|
|
Label("@emsdk//emscripten_toolchain:default_config"),
|
|
),
|
|
)
|
|
|
|
if repository_ctx.attr.targets or repository_ctx.attr.configuration:
|
|
root, script_ext = get_root_and_script_ext(repository_ctx)
|
|
llvm_root = root.get_child("bin")
|
|
cache = repository_ctx.path("cache")
|
|
|
|
# Create configuration file
|
|
embuilder_config_content = EMBUILDER_CONFIG_TEMPLATE.format(
|
|
cache = cache,
|
|
binaryen_root = root,
|
|
llvm_root = llvm_root,
|
|
)
|
|
repository_ctx.file("embuilder_config", embuilder_config_content)
|
|
embuilder_config_path = repository_ctx.path("embuilder_config")
|
|
embuilder_path = "{}{}".format(root.get_child("emscripten").get_child("embuilder"), script_ext)
|
|
|
|
# Prepare the command line
|
|
if repository_ctx.attr.targets:
|
|
targets = repository_ctx.attr.targets
|
|
else:
|
|
# If no targets are requested, build everything
|
|
targets = ["ALL"]
|
|
flags = ["--em-config", embuilder_config_path] + repository_ctx.attr.configuration
|
|
embuilder_args = [embuilder_path] + flags + ["build"] + targets
|
|
|
|
# Run embuilder
|
|
repository_ctx.report_progress("Building secondary cache")
|
|
result = repository_ctx.execute(
|
|
embuilder_args,
|
|
quiet = True,
|
|
environment = {
|
|
"EM_IGNORE_SANITY": "1",
|
|
"EM_NODE_JS": "empty",
|
|
},
|
|
)
|
|
if result.return_code != 0:
|
|
fail("Embuilder exited with a non-zero return code")
|
|
|
|
# Override Emscripten's cache with the secondary cache
|
|
default_config += "CACHE = '{}'\n".format(cache)
|
|
|
|
# Create the configuration file for the toolchain and export
|
|
repository_ctx.file("emscripten_config", default_config)
|
|
repository_ctx.file("BUILD.bazel", BUILD_FILE_CONTENT_TEMPLATE)
|
|
|
|
_emscripten_cache_repository = repository_rule(
|
|
implementation = _emscripten_cache_repository_impl,
|
|
attrs = {
|
|
"configuration": attr.string_list(),
|
|
"targets": attr.string_list(),
|
|
},
|
|
)
|
|
|
|
def _emscripten_cache_impl(ctx):
|
|
all_configuration = []
|
|
all_targets = []
|
|
for mod in ctx.modules:
|
|
for configuration in mod.tags.configuration:
|
|
all_configuration += configuration.flags
|
|
for targets in mod.tags.targets:
|
|
all_targets += targets.targets
|
|
|
|
_emscripten_cache_repository(
|
|
name = "emscripten_cache",
|
|
configuration = all_configuration,
|
|
targets = all_targets,
|
|
)
|
|
|
|
emscripten_cache = module_extension(
|
|
tag_classes = {
|
|
"configuration": tag_class(attrs = {"flags": attr.string_list()}),
|
|
"targets": tag_class(attrs = {"targets": attr.string_list()}),
|
|
},
|
|
implementation = _emscripten_cache_impl,
|
|
)
|