125 lines
4.2 KiB
Python
125 lines
4.2 KiB
Python
"""A module defining the various toolchain definitions for `rules_foreign_cc`"""
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load(":built_toolchains.bzl", _built_toolchains = "built_toolchains")
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load(":prebuilt_toolchains.bzl", _prebuilt_toolchains = "prebuilt_toolchains")
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# Re-expose the built toolchains macro
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built_toolchains = _built_toolchains
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# Re-expose the prebuilt toolchains macro
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prebuilt_toolchains = _prebuilt_toolchains
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# buildifier: disable=unnamed-macro
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def preinstalled_toolchains():
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"""Register toolchains for various build tools expected to be installed on the exec host"""
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native.register_toolchains(
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"@rules_foreign_cc//toolchains:preinstalled_cmake_toolchain",
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"@rules_foreign_cc//toolchains:preinstalled_make_toolchain",
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"@rules_foreign_cc//toolchains:preinstalled_ninja_toolchain",
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"@rules_foreign_cc//toolchains:preinstalled_autoconf_toolchain",
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"@rules_foreign_cc//toolchains:preinstalled_automake_toolchain",
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"@rules_foreign_cc//toolchains:preinstalled_m4_toolchain",
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"@rules_foreign_cc//toolchains:preinstalled_pkgconfig_toolchain",
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)
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def _current_toolchain_impl(ctx):
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toolchain = ctx.toolchains[ctx.attr._toolchain]
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if toolchain.data.target:
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return [
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toolchain,
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platform_common.TemplateVariableInfo(toolchain.data.env),
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DefaultInfo(
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files = toolchain.data.target.files,
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runfiles = toolchain.data.target.default_runfiles,
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),
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]
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return [
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toolchain,
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platform_common.TemplateVariableInfo(toolchain.data.env),
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DefaultInfo(),
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]
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# These rules exist so that the current toolchain can be used in the `toolchains` attribute of
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# other rules, such as genrule. It allows exposing a <tool>_toolchain after toolchain resolution has
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# happened, to a rule which expects a concrete implementation of a toolchain, rather than a
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# toochain_type which could be resolved to that toolchain.
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#
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# See https://github.com/bazelbuild/bazel/issues/14009#issuecomment-921960766
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current_cmake_toolchain = rule(
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implementation = _current_toolchain_impl,
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attrs = {
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"_toolchain": attr.string(default = str(Label("//toolchains:cmake_toolchain"))),
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},
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incompatible_use_toolchain_transition = True,
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toolchains = [
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str(Label("//toolchains:cmake_toolchain")),
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],
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)
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current_make_toolchain = rule(
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implementation = _current_toolchain_impl,
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attrs = {
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"_toolchain": attr.string(default = str(Label("//toolchains:make_toolchain"))),
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},
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incompatible_use_toolchain_transition = True,
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toolchains = [
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str(Label("//toolchains:make_toolchain")),
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],
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)
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current_ninja_toolchain = rule(
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implementation = _current_toolchain_impl,
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attrs = {
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"_toolchain": attr.string(default = str(Label("//toolchains:ninja_toolchain"))),
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},
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incompatible_use_toolchain_transition = True,
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toolchains = [
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str(Label("//toolchains:ninja_toolchain")),
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],
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)
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current_autoconf_toolchain = rule(
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implementation = _current_toolchain_impl,
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attrs = {
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"_toolchain": attr.string(default = str(Label("//toolchains:autoconf_toolchain"))),
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},
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incompatible_use_toolchain_transition = True,
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toolchains = [
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str(Label("//toolchains:autoconf_toolchain")),
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],
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)
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current_automake_toolchain = rule(
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implementation = _current_toolchain_impl,
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attrs = {
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"_toolchain": attr.string(default = str(Label("//toolchains:automake_toolchain"))),
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},
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incompatible_use_toolchain_transition = True,
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toolchains = [
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str(Label("//toolchains:automake_toolchain")),
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],
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)
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current_m4_toolchain = rule(
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implementation = _current_toolchain_impl,
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attrs = {
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"_toolchain": attr.string(default = str(Label("//toolchains:m4_toolchain"))),
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},
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incompatible_use_toolchain_transition = True,
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toolchains = [
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str(Label("//toolchains:m4_toolchain")),
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],
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)
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current_pkgconfig_toolchain = rule(
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implementation = _current_toolchain_impl,
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attrs = {
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"_toolchain": attr.string(default = str(Label("//toolchains:pkgconfig_toolchain"))),
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},
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incompatible_use_toolchain_transition = True,
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toolchains = [
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str(Label("//toolchains:pkgconfig_toolchain")),
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],
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)
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