diff options
Diffstat (limited to 'toolchains/rpm')
| -rw-r--r-- | toolchains/rpm/BUILD | 78 | ||||
| -rw-r--r-- | toolchains/rpm/BUILD.tpl | 14 | ||||
| -rw-r--r-- | toolchains/rpm/rpmbuild.bzl | 74 | ||||
| -rw-r--r-- | toolchains/rpm/rpmbuild_configure.bzl | 63 |
4 files changed, 229 insertions, 0 deletions
diff --git a/toolchains/rpm/BUILD b/toolchains/rpm/BUILD new file mode 100644 index 0000000..58ec5db --- /dev/null +++ b/toolchains/rpm/BUILD @@ -0,0 +1,78 @@ +# 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", +) diff --git a/toolchains/rpm/BUILD.tpl b/toolchains/rpm/BUILD.tpl new file mode 100644 index 0000000..ca4b218 --- /dev/null +++ b/toolchains/rpm/BUILD.tpl @@ -0,0 +1,14 @@ +# This content is generated by {GENERATOR} +load("@rules_pkg//toolchains/rpm:rpmbuild.bzl", "rpmbuild_toolchain") + +rpmbuild_toolchain( + name = "rpmbuild_auto", + path = "{RPMBUILD_PATH}", + version = "{RPMBUILD_VERSION}", +) + +toolchain( + name = "rpmbuild_auto_toolchain", + toolchain = ":rpmbuild_auto", + toolchain_type = "@rules_pkg//toolchains/rpm:rpmbuild_toolchain_type", +) diff --git a/toolchains/rpm/rpmbuild.bzl b/toolchains/rpm/rpmbuild.bzl new file mode 100644 index 0000000..3aa0ea0 --- /dev/null +++ b/toolchains/rpm/rpmbuild.bzl @@ -0,0 +1,74 @@ +# 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 provide an rpmbuild binary.""" + +RpmbuildInfo = provider( + doc = """Platform inde artifact.""", + fields = { + "name": "The name of the toolchain", + "valid": "Is this toolchain valid and usable?", + "label": "The path to a target I will build", + "path": "The path to a pre-built rpmbuild", + "version": "The version string of rpmbuild", + }, +) + +def _rpmbuild_toolchain_impl(ctx): + if ctx.attr.label and ctx.attr.path: + fail("rpmbuild_toolchain must not specify both label and path.") + valid = bool(ctx.attr.label) or bool(ctx.attr.path) + toolchain_info = platform_common.ToolchainInfo( + rpmbuild = RpmbuildInfo( + name = str(ctx.label), + valid = valid, + label = ctx.attr.label, + path = ctx.attr.path, + version = ctx.attr.version, + ), + ) + return [toolchain_info] + +rpmbuild_toolchain = rule( + implementation = _rpmbuild_toolchain_impl, + attrs = { + "label": attr.label( + doc = "A valid label of a target to build or a prebuilt binary. Mutually exclusive with path.", + cfg = "exec", + executable = True, + allow_files = True, + ), + "path": attr.string( + doc = "The path to the rpmbuild executable. Mutually exclusive with label.", + ), + "version": attr.string( + doc = "The version string of the rpmbuild executable. This should be manually set.", + ), + }, +) + +# Expose the presence of an rpmbuild in the resolved toolchain as a flag. +def _is_rpmbuild_available_impl(ctx): + toolchain = ctx.toolchains["@rules_pkg//toolchains/rpm:rpmbuild_toolchain_type"].rpmbuild + return [config_common.FeatureFlagInfo( + value = ("1" if toolchain.valid else "0"), + )] + +is_rpmbuild_available = rule( + implementation = _is_rpmbuild_available_impl, + attrs = {}, + toolchains = ["@rules_pkg//toolchains/rpm:rpmbuild_toolchain_type"], +) + +def rpmbuild_register_toolchains(): + native.register_toolchains("@rules_pkg//toolchains/rpm:rpmbuild_missing_toolchain") diff --git a/toolchains/rpm/rpmbuild_configure.bzl b/toolchains/rpm/rpmbuild_configure.bzl new file mode 100644 index 0000000..f50a9ad --- /dev/null +++ b/toolchains/rpm/rpmbuild_configure.bzl @@ -0,0 +1,63 @@ +# 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. +"""Repository rule to autoconfigure a toolchain using the system rpmbuild.""" + +def _write_build(rctx, path, version): + if not path: + path = "" + rctx.template( + "BUILD", + Label("//toolchains/rpm:BUILD.tpl"), + substitutions = { + "{GENERATOR}": "@rules_pkg//toolchains/rpm/rpmbuild_configure.bzl%find_system_rpmbuild", + "{RPMBUILD_PATH}": str(path), + "{RPMBUILD_VERSION}": version, + }, + executable = False, + ) + +def _find_system_rpmbuild_impl(rctx): + rpmbuild_path = rctx.which("rpmbuild") + if rctx.attr.verbose: + if rpmbuild_path: + print("Found rpmbuild at '%s'" % rpmbuild_path) # buildifier: disable=print + else: + print("No system rpmbuild found.") # buildifier: disable=print + version = "unknown" + if rpmbuild_path: + res = rctx.execute([rpmbuild_path, "--version"]) + if res.return_code == 0: + # expect stdout like: RPM version 4.16.1.2 + parts = res.stdout.strip().split(" ") + if parts[0] == "RPM" and parts[1] == "version": + version = parts[2] + _write_build(rctx = rctx, path = rpmbuild_path, version = version) + +_find_system_rpmbuild = repository_rule( + implementation = _find_system_rpmbuild_impl, + doc = """Create a repository that defines an rpmbuild toolchain based on the system rpmbuild.""", + local = True, + environ = ["PATH"], + attrs = { + "verbose": attr.bool( + doc = "If true, print status messages.", + ), + }, +) + +def find_system_rpmbuild(name, verbose=False): + _find_system_rpmbuild(name=name, verbose=verbose) + native.register_toolchains( + "@%s//:rpmbuild_auto_toolchain" % name, + "@rules_pkg//toolchains/rpm:rpmbuild_missing_toolchain") |