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Update
cargo_build_script to work without runfiles support.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,13 @@ | ||
| load("@bazel_skylib//:bzl_library.bzl", "bzl_library") | ||
| load(":runfiles_enabled.bzl", "runfiles_enabled_build_setting") | ||
|
|
||
| bzl_library( | ||
| name = "bzl_lib", | ||
| srcs = glob(["**/*.bzl"]), | ||
| visibility = ["//:__subpackages__"], | ||
| ) | ||
|
|
||
| runfiles_enabled_build_setting( | ||
| name = "runfiles_enabled", | ||
| visibility = ["//visibility:public"], | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,167 @@ | ||
| """A small utility module dedicated to detecting whether or not the `--enable_runfiles` and `--windows_enable_symlinks` flag are enabled | ||
| """ | ||
|
|
||
| load("@bazel_skylib//lib:selects.bzl", "selects") | ||
| load("@bazel_skylib//rules:common_settings.bzl", "bool_setting") | ||
|
|
||
| RunfilesEnabledInfo = provider( | ||
| doc = "A singleton provider that contains the raw value of a build setting", | ||
| fields = { | ||
| "value": "The value of the build setting in the current configuration. " + | ||
| "This value may come from the command line or an upstream transition, " + | ||
| "or else it will be the build setting's default.", | ||
| }, | ||
| ) | ||
|
|
||
| def _runfiles_enabled_setting_impl(ctx): | ||
| return RunfilesEnabledInfo(value = ctx.attr.value) | ||
|
|
||
| runfiles_enabled_setting = rule( | ||
| implementation = _runfiles_enabled_setting_impl, | ||
| doc = "A bool-typed build setting that cannot be set on the command line", | ||
| attrs = { | ||
| "value": attr.bool( | ||
| doc = "A boolean value", | ||
| mandatory = True, | ||
| ), | ||
| }, | ||
| ) | ||
|
|
||
| _RUNFILES_ENABLED_ATTR_NAME = "_runfiles_enabled" | ||
|
|
||
| def runfiles_enabled_attr(default): | ||
| return { | ||
| _RUNFILES_ENABLED_ATTR_NAME: attr.label( | ||
| doc = "A flag representing whether or not runfiles are enabled.", | ||
| providers = [RunfilesEnabledInfo], | ||
| default = default, | ||
| cfg = "exec", | ||
| ), | ||
| } | ||
|
|
||
| def runfiles_enabled_build_setting(name, **kwargs): | ||
| """Define a build setting identifying if runfiles are enabled. | ||
| Args: | ||
| name (str): The name of the build setting | ||
| **kwargs: Additional keyword arguments for the target. | ||
| """ | ||
| native.config_setting( | ||
| name = "{}__enable_runfiles".format(name), | ||
| values = {"enable_runfiles": "true"}, | ||
| ) | ||
|
|
||
| native.config_setting( | ||
| name = "{}__disable_runfiles".format(name), | ||
| values = {"enable_runfiles": "false"}, | ||
| ) | ||
|
|
||
| bool_setting( | ||
| name = "{}__always_true".format(name), | ||
| build_setting_default = True, | ||
| ) | ||
|
|
||
| native.config_setting( | ||
| name = "{}__always_true_setting".format(name), | ||
| flag_values = {":{}__always_true".format(name): "True"}, | ||
| ) | ||
|
|
||
| native.config_setting( | ||
| name = "{}__always_false_setting".format(name), | ||
| flag_values = {":{}__always_true".format(name): "False"}, | ||
| ) | ||
|
|
||
| # There is no way to query a setting that is unset. By utilizing constant | ||
| # settings, we can filter to a fallback setting where no known value is | ||
| # defined. | ||
| native.alias( | ||
| name = "{}__unset_runfiles".format(name), | ||
| actual = select({ | ||
| ":{}__disable_runfiles".format(name): ":{}__always_false_setting".format(name), | ||
| ":{}__enable_runfiles".format(name): ":{}__always_false_setting".format(name), | ||
| "//conditions:default": ":{}__always_true_setting".format(name), | ||
| }), | ||
| ) | ||
|
|
||
| selects.config_setting_group( | ||
| name = "{}__windows_enable_runfiles".format(name), | ||
| match_all = [ | ||
| ":{}__enable_runfiles".format(name), | ||
| "@platforms//os:windows", | ||
| ], | ||
| ) | ||
|
|
||
| selects.config_setting_group( | ||
| name = "{}__windows_disable_runfiles".format(name), | ||
| match_all = [ | ||
| ":{}__disable_runfiles".format(name), | ||
| "@platforms//os:windows", | ||
| ], | ||
| ) | ||
|
|
||
| selects.config_setting_group( | ||
| name = "{}__windows_unset_runfiles".format(name), | ||
| match_all = [ | ||
| ":{}__unset_runfiles".format(name), | ||
| "@platforms//os:windows", | ||
| ], | ||
| ) | ||
|
|
||
| native.alias( | ||
| name = "{}__unix".format(name), | ||
| actual = select({ | ||
| "@platforms//os:windows": ":{}__always_false_setting".format(name), | ||
| "//conditions:default": ":{}__always_true_setting".format(name), | ||
| }), | ||
| ) | ||
|
|
||
| selects.config_setting_group( | ||
| name = "{}__unix_enable_runfiles".format(name), | ||
| match_all = [ | ||
| ":{}__enable_runfiles".format(name), | ||
| ":{}__unix".format(name), | ||
| ], | ||
| ) | ||
|
|
||
| selects.config_setting_group( | ||
| name = "{}__unix_disable_runfiles".format(name), | ||
| match_all = [ | ||
| ":{}__disable_runfiles".format(name), | ||
| ":{}__unix".format(name), | ||
| ], | ||
| ) | ||
|
|
||
| selects.config_setting_group( | ||
| name = "{}__unix_unset_runfiles".format(name), | ||
| match_all = [ | ||
| ":{}__unset_runfiles".format(name), | ||
| ":{}__unix".format(name), | ||
| ], | ||
| ) | ||
|
|
||
| runfiles_enabled_setting( | ||
| name = name, | ||
| value = select({ | ||
| ":{}__windows_enable_runfiles".format(name): True, | ||
| ":{}__windows_disable_runfiles".format(name): False, | ||
| ":{}__windows_unset_runfiles".format(name): False, | ||
| ":{}__unix_enable_runfiles".format(name): True, | ||
| ":{}__unix_disable_runfiles".format(name): False, | ||
| ":{}__unix_unset_runfiles".format(name): True, | ||
| "//conditions:default": True, | ||
| }), | ||
| **kwargs | ||
| ) | ||
|
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||
| def is_runfiles_enabled(attr): | ||
| """Determine whether or not runfiles are enabled. | ||
| Args: | ||
| attr (struct): A rule's struct of attributes (`ctx.attr`) | ||
| Returns: | ||
| bool: The enable_runfiles value. | ||
| """ | ||
|
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| runfiles_enabled = getattr(attr, _RUNFILES_ENABLED_ATTR_NAME, None) | ||
|
|
||
| return runfiles_enabled[RunfilesEnabledInfo].value if runfiles_enabled else True |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| load("//rust:defs.bzl", "rust_binary") | ||
|
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| rust_binary( | ||
| name = "runfiles_maker", | ||
| srcs = ["runfiles_maker.rs"], | ||
| edition = "2021", | ||
| visibility = ["//visibility:public"], | ||
| ) |
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