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"""A test rule that compares two CToolchains in proto format."""
def _impl(ctx):
toolchain_config_proto = ctx.actions.declare_file(ctx.label.name + "_toolchain_config.proto")
ctx.actions.write(
toolchain_config_proto,
ctx.attr.toolchain_config[CcToolchainConfigInfo].proto,
)
script = ("%s --before='%s' --after='%s' --toolchain_identifier='%s'" % (
ctx.executable._comparator.short_path,
ctx.file.crosstool.short_path,
toolchain_config_proto.short_path,
ctx.attr.toolchain_identifier,
))
test_executable = ctx.actions.declare_file(ctx.label.name)
ctx.actions.write(test_executable, script, is_executable = True)
runfiles = ctx.runfiles(files = [toolchain_config_proto, ctx.file.crosstool])
runfiles = runfiles.merge(ctx.attr._comparator[DefaultInfo].default_runfiles)
return DefaultInfo(runfiles = runfiles, executable = test_executable)
cc_toolchains_compare_test = rule(
implementation = _impl,
attrs = {
"crosstool": attr.label(
mandatory = True,
allow_single_file = True,
doc = "Location of the CROSSTOOL file",
),
"toolchain_config": attr.label(
mandatory = True,
providers = [CcToolchainConfigInfo],
doc = ("Starlark rule that replaces the CROSSTOOL file functionality " +
"for the CToolchain with the given identifier"),
),
"toolchain_identifier": attr.string(
mandatory = True,
doc = "identifier of the CToolchain that is being compared",
),
"_comparator": attr.label(
default = ":ctoolchain_comparator",
executable = True,
cfg = "exec",
),
},
test = True,
)
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