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comparison third_party/emsdk/bazel/emscripten_deps.bzl @ 179:8d17f6e6e290

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[ThirdParty] Added emsdk bazel rules that can be supported by bazel 9.0.0
author MrJuneJune <me@mrjunejune.com>
date Thu, 22 Jan 2026 21:23:17 -0800
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178:94705b5986b3 179:8d17f6e6e290
1 load(":remote_emscripten_repository.bzl", "remote_emscripten_repository")
2 load(":revisions.bzl", "EMSCRIPTEN_TAGS")
3
4 def _parse_version(v):
5 return [int(u) for u in v.split(".")]
6
7 def _empty_repository_impl(ctx):
8 ctx.file("MODULE.bazel", """module(name = "{}")""".format(ctx.name))
9 ctx.file("BUILD.bazel", "")
10
11 _empty_repository = repository_rule(
12 implementation = _empty_repository_impl,
13 )
14
15 def emscripten_repo_name(name):
16 return "emscripten_bin_{}".format(name)
17
18 def _emscripten_deps_impl(ctx):
19 version = None
20
21 for mod in ctx.modules:
22 for config in mod.tags.config:
23 if config.version and version != None:
24 fail("More than one emscripten version specified!")
25 version = config.version
26 if version == None:
27 version = "latest"
28
29 if version == "latest":
30 version = reversed(sorted(EMSCRIPTEN_TAGS.keys(), key = _parse_version))[0]
31
32 revision = EMSCRIPTEN_TAGS[version]
33
34 emscripten_url = "https://storage.googleapis.com/webassembly/emscripten-releases-builds/{}/{}/wasm-binaries{}.{}"
35
36 remote_emscripten_repository(
37 name = emscripten_repo_name("linux"),
38 bin_extension = "",
39 sha256 = revision.sha_linux,
40 strip_prefix = "install",
41 type = "tar.xz",
42 url = emscripten_url.format("linux", revision.hash, "", "tar.xz"),
43 )
44
45 # Not all versions have a linux/arm64 release: https://github.com/emscripten-core/emsdk/issues/547
46 if hasattr(revision, "sha_linux_arm64"):
47 remote_emscripten_repository(
48 name = emscripten_repo_name("linux_arm64"),
49 bin_extension = "",
50 sha256 = revision.sha_linux_arm64,
51 strip_prefix = "install",
52 type = "tar.xz",
53 url = emscripten_url.format("linux", revision.hash, "-arm64", "tar.xz"),
54 )
55 else:
56 _empty_repository(
57 name = emscripten_repo_name("linux_arm64"),
58 )
59
60 remote_emscripten_repository(
61 name = emscripten_repo_name("mac"),
62 bin_extension = "",
63 sha256 = revision.sha_mac,
64 strip_prefix = "install",
65 type = "tar.xz",
66 url = emscripten_url.format("mac", revision.hash, "", "tar.xz"),
67 )
68
69 remote_emscripten_repository(
70 name = emscripten_repo_name("mac_arm64"),
71 bin_extension = "",
72 sha256 = revision.sha_mac_arm64,
73 strip_prefix = "install",
74 type = "tar.xz",
75 url = emscripten_url.format("mac", revision.hash, "-arm64", "tar.xz"),
76 )
77
78 remote_emscripten_repository(
79 name = emscripten_repo_name("win"),
80 bin_extension = ".exe",
81 sha256 = revision.sha_win,
82 strip_prefix = "install",
83 type = "zip",
84 url = emscripten_url.format("win", revision.hash, "", "zip"),
85 )
86
87 emscripten_deps = module_extension(
88 tag_classes = {
89 "config": tag_class(
90 attrs = {
91 "version": attr.string(
92 doc = "Version to use. 'latest' to use latest.",
93 values = ["latest"] + EMSCRIPTEN_TAGS.keys(),
94 ),
95 },
96 ),
97 },
98 implementation = _emscripten_deps_impl,
99 )