1 files changed, 78 insertions, 0 deletions
diff --git a/toolchains/rpm/BUILD b/toolchains/rpm/BUILD
new file mode 100644
index 0000000..58ec5db
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+++ b/toolchains/rpm/BUILD
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+# Copyright 2020 The Bazel Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""toolchain to wrap an rpmbuild binary.
+
+Type: @rules_pkg//toolchains/rpm:rpmbuild_toolchain_type
+
+Toolchains:
+- rpmbuild_missing_toolchain: provides a fallback toolchain for exec platforms
+  where rpmbuild might not be available.
+
+- rpmbuild_auto_toolchain: a toolchain that uses the installed rpmbuild. See
+  rpmbuild_configure.bzl%find_system_rpmbuild for usage.
+"""
+
+load("//toolchains/rpm:rpmbuild.bzl", "is_rpmbuild_available", "rpmbuild_toolchain")
+
+package(default_applicable_licenses = ["//:license"])
+
+filegroup(
+    name = "standard_package",
+    srcs = glob([
+        "*",
+    ]),
+    visibility = ["//distro:__pkg__"],
+)
+
+exports_files(
+    glob(["*"]),
+    visibility = ["//visibility:public"],
+)
+
+# Expose the availability of an actual rpmbuild as a config_setting, so we can
+# select() on it.
+config_setting(
+    name = "have_rpmbuild",
+    flag_values = {
+        ":is_rpmbuild_available": "1",
+    },
+    visibility = ["//visibility:public"],
+)
+
+# Expose the availability of an actual rpmbuild as a feature flag, so we can
+# create a config_setting from it.
+is_rpmbuild_available(
+    name = "is_rpmbuild_available",
+    visibility = ["//:__subpackages__"],
+)
+
+toolchain_type(
+    name = "rpmbuild_toolchain_type",
+    visibility = ["//visibility:public"],
+)
+
+# rpmbuild_missing_toolchain provides a fallback toolchain so that toolchain
+# resolution can succeed even on platforms that do not have a working rpmbuild.
+# If this toolchain is selected, the constraint ":have_rpmbuild" will not be
+# satistifed.
+rpmbuild_toolchain(
+    name = "no_rpmbuild",
+)
+
+toolchain(
+    name = "rpmbuild_missing_toolchain",
+    toolchain = ":no_rpmbuild",
+    toolchain_type = ":rpmbuild_toolchain_type",
+)