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Fix ctx.fragments.apple.single_arch_cpu returning incorrect cpu for…
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… tools when host cpu and exec cpu are different (#14751)

Fixes #14291

Closes #14665.

PiperOrigin-RevId: 425886938
(cherry picked from commit fce7ea8)

Co-authored-by: Thi Doan <t@thi.im>
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brentleyjones and thii authored Feb 9, 2022
1 parent 53ee76e commit 21ff46a
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Showing 3 changed files with 115 additions and 2 deletions.
Original file line number Diff line number Diff line change
Expand Up @@ -73,6 +73,9 @@ public class AppleConfiguration extends Fragment implements AppleConfigurationAp
/** Prefix for iOS cpu values */
public static final String IOS_CPU_PREFIX = "ios_";

/** Prefix for macOS cpu values */
private static final String MACOS_CPU_PREFIX = "darwin_";

// TODO(b/180572694): Remove after platforms based toolchain resolution supported.
/** Prefix for forced iOS simulator cpu values */
public static final String IOS_FORCED_SIMULATOR_CPU_PREFIX = "sim_";
Expand Down Expand Up @@ -122,7 +125,7 @@ public static AppleCpus create(AppleCommandLineOptions options, CoreOptions core
: ImmutableList.copyOf(options.tvosCpus);
ImmutableList<String> macosCpus =
(options.macosCpus == null || options.macosCpus.isEmpty())
? ImmutableList.of(AppleCommandLineOptions.DEFAULT_MACOS_CPU)
? ImmutableList.of(macosCpuFromCpu(coreOptions.cpu))
: ImmutableList.copyOf(options.macosCpus);
ImmutableList<String> catalystCpus =
(options.catalystCpus == null || options.catalystCpus.isEmpty())
Expand All @@ -148,7 +151,7 @@ public static AppleCpus create(AppleCommandLineOptions options, CoreOptions core
abstract ImmutableList<String> catalystCpus();
}

/** Determines cpu value from apple-specific toolchain identifier. */
/** Determines iOS cpu value from apple-specific toolchain identifier. */
public static String iosCpuFromCpu(String cpu) {
if (cpu.startsWith(IOS_CPU_PREFIX)) {
return cpu.substring(IOS_CPU_PREFIX.length());
Expand All @@ -157,6 +160,14 @@ public static String iosCpuFromCpu(String cpu) {
}
}

/** Determines macOS cpu value from apple-specific toolchain identifier. */
private static String macosCpuFromCpu(String cpu) {
if (cpu.startsWith(MACOS_CPU_PREFIX)) {
return cpu.substring(MACOS_CPU_PREFIX.length());
}
return AppleCommandLineOptions.DEFAULT_MACOS_CPU;
}

public AppleCommandLineOptions getOptions() {
return options;
}
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Original file line number Diff line number Diff line change
@@ -0,0 +1,101 @@
// Copyright 2022 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.

package com.google.devtools.build.lib.rules.apple;

import static com.google.common.truth.Truth.assertThat;

import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.analysis.util.BuildViewTestCase;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.packages.Provider;
import com.google.devtools.build.lib.packages.StarlarkProvider;
import com.google.devtools.build.lib.packages.StructImpl;
import com.google.devtools.build.lib.testutil.TestConstants;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Tests for the Starlark interface of Apple fragment. */
@RunWith(JUnit4.class)
public class AppleFragmentTest extends BuildViewTestCase {

@Before
public void setup() throws Exception {
scratch.file(
"rules.bzl",
"MyInfo = provider()",
"def _my_binary_impl(ctx):",
" out = ctx.actions.declare_file(ctx.label.name)",
" ctx.actions.write(out, '')",
" return [",
" DefaultInfo(executable = out),",
" MyInfo(",
" exec_cpu = ctx.fragments.apple.single_arch_cpu,",
" ),",
" ]",
"my_binary = rule(",
" fragments = ['apple'],",
" implementation = _my_binary_impl,",
")",
"def _my_rule_impl(ctx):",
" return ctx.attr._tool[MyInfo]",
"my_rule = rule(",
" _my_rule_impl,",
" attrs = {",
" '_tool': attr.label(",
" cfg = 'exec',",
" executable = True,",
" default = ('//:bin'),",
" ),",
" },",
")");
scratch.file(
"BUILD",
"load(':rules.bzl', 'my_binary', 'my_rule')",
"my_binary(name = 'bin')",
"my_rule(name = 'a')",
"platform(",
" name = 'macos_arm64',",
" constraint_values = [",
" '" + TestConstants.CONSTRAINTS_PACKAGE_ROOT + "cpu:aarch64',",
" '" + TestConstants.CONSTRAINTS_PACKAGE_ROOT + "os:osx',",
" ],",
")");
scratch.file(
"/workspace/platform_mappings",
"platforms:",
" //:macos_arm64",
" --cpu=darwin_arm64",
"flags:",
" --cpu=darwin_arm64",
" --apple_platform_type=macos",
" //:macos_arm64");
invalidatePackages(false);
}

@Test
public void appleFragmentSingleArchCpuOnExtraExecPlatform() throws Exception {
// Test that ctx.fragments.apple.single_arch_cpu returns the execution
// platform's cpu in a tool's rule context.
useConfiguration("--extra_execution_platforms=//:macos_arm64");
ConfiguredTarget configuredTarget = getConfiguredTarget("//:a");
Provider.Key key =
new StarlarkProvider.Key(Label.parseAbsolute("//:rules.bzl", ImmutableMap.of()), "MyInfo");
StructImpl myInfo = (StructImpl) configuredTarget.get(key);
assertThat((String) myInfo.getValue("exec_cpu")).isEqualTo("arm64");
}
}
Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@ java_library(
"//src/test/java/com/google/devtools/build/lib/analysis/util",
"//src/test/java/com/google/devtools/build/lib/packages:testutil",
"//src/test/java/com/google/devtools/build/lib/testutil",
"//src/test/java/com/google/devtools/build/lib/testutil:TestConstants",
"//third_party:guava",
"//third_party:guava-testlib",
"//third_party:jsr305",
Expand Down

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