Declare that bazel is under an Apache 2.0 license

BUILD

@@ -2,10 +2,21 @@
 
 load("//tools/distributions:distribution_rules.bzl", "distrib_jar_filegroup")
 load("//tools/python:private/defs.bzl", "py_binary")
+load("@rules_license//rules:license.bzl", "license")
 load("@rules_pkg//:pkg.bzl", "pkg_tar")
 
 package(default_visibility = ["//scripts/release:__pkg__"])
 
+license(
+    name = "license",
+    license_kinds = [
+        "@rules_license//licenses/spdx:Apache-2.0",
+    ],
+    copyright_notice = "Copyright © 2014 The Bazel Authors. All rights reserved.",
+    license_text = "LICENSE",
+    package_name = "bazelbuild/bazel",
+)
+
 exports_files(["LICENSE"])
 
 filegroup(
@@ -31,6 +42,7 @@ filegroup(
         "//src/main/starlark/tests/builtins_bzl:srcs",
     ] + glob([".bazelci/*"]) + [".bazelrc"],
     visibility = ["//src/test/shell/bazel:__pkg__"],
+    applicable_licenses = ["@io_bazel//:license"],
 )
 
 filegroup(

WORKSPACE

@@ -57,6 +57,12 @@ bind(
     actual = "//third_party:guava",
 )
 
+# We must control the version of rules_license we use, so we load ours before
+# any other repo can bring it in through their deps.
+dist_http_archive(
+    name = "rules_license",
+)
+
 # For src/test/shell/bazel:test_srcs
 load("//src/test/shell/bazel:list_source_repository.bzl", "list_source_repository")
 
@@ -658,7 +664,3 @@ debian_deps()
 load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
 
 bazel_skylib_workspace()
-
-dist_http_archive(
-    name = "rules_license",
-)

distdir_deps.bzl

@@ -233,6 +233,7 @@ DIST_DEPS = {
         ],
         "used_in": [
             "additional_distfiles",
+            "test_WORKSPACE_files",
         ],
     },
     "rules_pkg": {

src/BUILD

@@ -5,6 +5,8 @@ load(":embedded_tools.bzl", "srcsfile")
 load(":rule_size_test.bzl", "rule_size_test")
 load("//src:release_archive.bzl", "release_archive")
 
+package(default_applicable_licenses = ["@io_bazel//:license"])
+
 exports_files(["jdeps_modules.golden"])
 
 md5_cmd = "set -e -o pipefail && %s $(SRCS) | %s | %s > $@"
@@ -379,6 +381,7 @@ genrule(
         "//scripts/packages:__pkg__",  # For installer generation
         "//src/java:__subpackages__",  # For command line reference generation
         "//src/test:__subpackages__",  # For integration tests
+        "//tools/compliance:__pkg__",  # For license gathering
     ],
 ) for suffix, jdk in [
     ("-dev", "_jdk_allmodules"),

src/test/shell/BUILD

@@ -28,6 +28,7 @@ gen_workspace_stanza(
     repos = [
         "rules_cc",
         "rules_java",
+        "rules_license",
         "rules_proto",
     ],
     template = "testenv.sh.tmpl",

src/test/shell/bazel/srcs_test.sh

@@ -25,6 +25,7 @@ SRCS_QUERY="$(mktemp)"
 # a local_repository located in third_party.
 cat "${TEST_SRCDIR}/io_bazel/src/test/shell/bazel/srcs_list" \
   | sed -e 's|@bazel_tools//||' \
+  | sed -e 's|@io_bazel//||' \
   | sed -e 's|@\([^/]*\)//|third_party/\1|' \
   | sed -e 's|^//||' | sed -e 's|^:||' | sed -e 's|:|/|' \
   | sort -u >"${SRCS_QUERY}"

src/test/shell/testenv.sh.tmpl

@@ -325,6 +325,7 @@ EOF
         "remotejdk18_win_arm64_for_testing"
         "rules_cc"
         "rules_java"
+        "rules_license"
         "rules_proto"
         "rules_python"
     )
@@ -543,6 +544,14 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 EOF
 }
 
+function add_rules_license_to_workspace() {
+  cat >> "$1"<<EOF
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+{rules_license}
+EOF
+}
+
 function add_rules_proto_to_workspace() {
   cat >> "$1"<<EOF
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
@@ -563,6 +572,7 @@ workspace(name = "$2")
 EOF
   add_rules_cc_to_workspace "WORKSPACE"
   add_rules_java_to_workspace "WORKSPACE"
+  add_rules_license_to_workspace "WORKSPACE"
   add_rules_proto_to_workspace "WORKSPACE"
 
   maybe_setup_python_windows_workspace

tools/BUILD

@@ -9,6 +9,7 @@ filegroup(
         "//tools/buildstamp:srcs",
         "//tools/build_defs:srcs",
         "//tools/build_rules:srcs",
+        "//tools/compliance:srcs",
         "//tools/config:srcs",
         "//tools/coverage:srcs",
         "//tools/ctexplain:srcs",

tools/compliance/BUILD

@@ -0,0 +1,25 @@
+# Tools for gathering OSS licenses
+
+load("@rules_license//rules:compliance.bzl", "check_license")
+
+licenses(["notice"])  # Apache 2.0
+
+filegroup(
+    name = "srcs",
+    srcs = glob(["**"]),
+    visibility = [
+        "//tools:__subpackages__",
+        "@bazel_tools//tools:__subpackages__",
+    ],
+)
+
+check_license(
+    name = "check_bazel",
+    check_conditions = False,
+    copyright_notices = "bazel_copyrights.txt",
+    license_texts = "bazel_licenses.txt",
+    report = "bazel_report",
+    deps = [
+        "//src:bazel-bin_nojdk",
+    ],
+)