mirror of
https://github.com/bazel-contrib/rules_foreign_cc
synced 2024-11-30 16:42:07 +00:00
105 lines
3.8 KiB
Python
105 lines
3.8 KiB
Python
load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
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load("//for_workspace:repositories.bzl", "repositories")
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load(
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"//tools/build_defs/shell_toolchain/toolchains:ws_defs.bzl",
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shell_toolchain_workspace_initalization = "workspace_part",
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)
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def _read_build_options_impl(rctx):
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rctx.file("BUILD.bazel", "\n".join(
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[
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_build_tools(rctx),
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_build_mode(rctx),
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],
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))
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rctx.file("bazel_version.bzl", "BAZEL_VERSION=\"{}\"".format(native.bazel_version))
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def _build_mode(rctx):
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path = rctx.path(Label("//for_workspace:compilation_mode.bzl"))
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rctx.template("compilation_mode.bzl", path)
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return """
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load("//:compilation_mode.bzl", "compilation_mode")
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config_setting(
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name = "is_debug",
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values = {"compilation_mode": "dbg"}
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)
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compilation_mode(
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name = "compilation_mode",
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is_debug = select({
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":is_debug": True,
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"//conditions:default": False,
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}),
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visibility = ["//visibility:public"],
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)
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"""
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def _build_tools(rctx):
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rctx.file(
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"tools.bzl",
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"""NINJA_USE_BUILT=False
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NINJA_COMMAND="ninja"
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NINJA_DEP=[]
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CMAKE_USE_BUILT=False
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CMAKE_COMMAND="cmake"
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CMAKE_DEP=[]
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print("Please remove usage of @foreign_cc_platform_utils//:tools.bzl, as it is no longer needed.")
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print("To specify the custom cmake and/or ninja tool, use the toolchains registration with \
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rules_foreign_cc_dependencies() parameters.")
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""",
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)
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_read_build_options = repository_rule(
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implementation = _read_build_options_impl,
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environ = ["PATH"],
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)
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def rules_foreign_cc_dependencies(
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native_tools_toolchains = [],
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register_default_tools = True,
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additonal_shell_toolchain_mappings = [],
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additonal_shell_toolchain_package = None):
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""" Call this function from the WORKSPACE file to initialize rules_foreign_cc
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dependencies and let neccesary code generation happen
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(Code generation is needed to support different variants of the C++ Starlark API.).
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Args:
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native_tools_toolchains: pass the toolchains for toolchain types
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'@rules_foreign_cc//tools/build_defs:cmake_toolchain' and
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'@rules_foreign_cc//tools/build_defs:ninja_toolchain' with the needed platform constraints.
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If you do not pass anything, registered default toolchains will be selected (see below).
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register_default_tools: if True, the cmake and ninja toolchains, calling corresponding
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preinstalled binaries by name (cmake, ninja) will be registered after
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'native_tools_toolchains' without any platform constraints.
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The default is True.
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additonal_shell_toolchain_mappings: mappings of the shell toolchain functions to
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execution and target platforms constraints. Similar to what defined in
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@rules_foreign_cc//tools/build_defs/shell_toolchain/toolchains:toolchain_mappings.bzl
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in the TOOLCHAIN_MAPPINGS list.
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Please refer to example in @rules_foreign_cc//toolchain_examples.
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additonal_shell_toolchain_package: a package under which additional toolchains, referencing
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the generated data for the passed additonal_shell_toolchain_mappings, will be defined.
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This value is needed since register_toolchains() is called for these toolchains.
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Please refer to example in @rules_foreign_cc//toolchain_examples.
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"""
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repositories()
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_read_build_options(name = "foreign_cc_platform_utils")
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shell_toolchain_workspace_initalization(
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additonal_shell_toolchain_mappings,
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additonal_shell_toolchain_package,
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)
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native.register_toolchains(*native_tools_toolchains)
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if register_default_tools:
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native.register_toolchains(
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"@rules_foreign_cc//tools/build_defs:preinstalled_cmake_toolchain",
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"@rules_foreign_cc//tools/build_defs:preinstalled_ninja_toolchain",
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)
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