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// Copyright 2017 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.cpp;
import static com.google.common.truth.Truth.assertThat;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;
import com.google.devtools.build.lib.analysis.ConfiguredTarget;
import com.google.devtools.build.lib.analysis.ToolchainContext.ResolvedToolchainProviders;
import com.google.devtools.build.lib.analysis.util.BuildViewTestCase;
import com.google.devtools.build.lib.analysis.util.ScratchAttributeWriter;
import com.google.devtools.build.lib.cmdline.Label;
import com.google.devtools.build.lib.packages.util.MockCcSupport;
import com.google.devtools.build.lib.packages.util.MockPlatformSupport;
import com.google.devtools.build.lib.testutil.TestConstants;
import com.google.devtools.build.lib.view.config.crosstool.CrosstoolConfig.ToolPath;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for platform-based toolchain selection in the c++ rules. */
@RunWith(JUnit4.class)
public class CcToolchainSelectionTest extends BuildViewTestCase {
@Before
public void setup() throws Exception {
MockPlatformSupport.addMockPiiiPlatform(
mockToolsConfig, analysisMock.ccSupport().getMockCrosstoolLabel());
}
private CppCompileAction getCppCompileAction(String label) throws Exception {
ConfiguredTarget target = getConfiguredTarget(label);
List<CppCompileAction> compilationSteps =
actionsTestUtil()
.findTransitivePrerequisitesOf(
getFilesToBuild(target).iterator().next(), CppCompileAction.class);
return compilationSteps.get(0);
}
private static final String CPP_TOOLCHAIN_TYPE =
TestConstants.TOOLS_REPOSITORY + "//tools/cpp:toolchain_type";
@Test
public void testResolvedCcToolchain() throws Exception {
useConfiguration(
"--experimental_platforms=//mock_platform:mock-piii-platform",
"--extra_toolchains=//mock_platform:toolchain_cc-compiler-piii");
ConfiguredTarget target =
ScratchAttributeWriter.fromLabelString(this, "cc_library", "//lib")
.setList("srcs", "a.cc")
.write();
ResolvedToolchainProviders providers =
(ResolvedToolchainProviders)
getRuleContext(target).getToolchainContext().getResolvedToolchainProviders();
CcToolchainProvider toolchain =
(CcToolchainProvider)
providers.getForToolchainType(Label.parseAbsolute(CPP_TOOLCHAIN_TYPE));
assertThat(Iterables.getOnlyElement(toolchain.getCompile()).getExecPathString())
.endsWith("piii");
}
@Test
public void testToolchainSelectionWithPlatforms() throws Exception {
useConfiguration(
"--enabled_toolchain_types=" + CPP_TOOLCHAIN_TYPE,
"--experimental_platforms=//mock_platform:mock-piii-platform",
"--extra_toolchains=//mock_platform:toolchain_cc-compiler-piii");
ScratchAttributeWriter.fromLabelString(this, "cc_library", "//lib")
.setList("srcs", "a.cc")
.write();
CppCompileAction compileAction = getCppCompileAction("//lib");
boolean isPiii =
ImmutableList.copyOf(compileAction.getInputs())
.stream()
.anyMatch(artifact -> artifact.getExecPathString().endsWith("piii"));
assertThat(isPiii).isTrue();
}
@Test
public void testCToolchainSelectionFromCcToolchainAttrs() throws Exception {
useConfiguration(
"--enabled_toolchain_types=" + CPP_TOOLCHAIN_TYPE,
"--experimental_platforms=//mock_platform:mock-piii-platform",
"--extra_toolchains=//mock_platform:toolchain_cc-compiler-piii");
ConfiguredTarget target =
ScratchAttributeWriter.fromLabelString(this, "cc_library", "//lib")
.setList("srcs", "a.cc")
.write();
ResolvedToolchainProviders providers =
(ResolvedToolchainProviders)
getRuleContext(target).getToolchainContext().getResolvedToolchainProviders();
CcToolchainProvider toolchain =
(CcToolchainProvider)
providers.getForToolchainType(Label.parseAbsolute(CPP_TOOLCHAIN_TYPE));
assertThat(toolchain.getToolchainIdentifier()).endsWith("piii");
}
@Test
public void testIncompleteCcToolchain() throws Exception {
mockToolsConfig.create(
"incomplete_toolchain/BUILD",
"toolchain(",
" name = 'incomplete_toolchain_cc-compiler-piii',",
" toolchain_type = '" + CPP_TOOLCHAIN_TYPE + "',",
" toolchain = ':incomplete_cc-compiler-piii',",
" target_compatible_with = ['//mock_platform:mock_value']",
")",
"cc_toolchain(",
" name = 'incomplete_cc-compiler-piii',",
" cpu = 'piii',",
" ar_files = 'ar-piii',",
" as_files = 'as-piii',",
" compiler_files = 'compile-piii',",
" dwp_files = 'dwp-piii',",
" linker_files = 'link-piii',",
" strip_files = ':dummy_filegroup',",
" objcopy_files = 'objcopy-piii',",
" all_files = ':dummy_filegroup',",
" static_runtime_libs = ['static-runtime-libs-piii'],",
" dynamic_runtime_libs = ['dynamic-runtime-libs-piii'],",
")",
"filegroup(name = 'dummy_filegroup')");
useConfiguration(
"--enabled_toolchain_types=" + CPP_TOOLCHAIN_TYPE,
"--experimental_platforms=//mock_platform:mock-piii-platform",
"--extra_toolchains=//incomplete_toolchain:incomplete_toolchain_cc-compiler-piii");
// should not throw.
}
@Test
public void testToolPaths() throws Exception {
String originalCrosstool = analysisMock.ccSupport().readCrosstoolFile();
String crosstoolWithPiiiLd =
MockCcSupport.applyToToolchain(
originalCrosstool,
"piii",
t -> t.addToolPath(ToolPath.newBuilder().setName("ld").setPath("piii-ld").build()));
getAnalysisMock().ccSupport().setupCrosstoolWithRelease(mockToolsConfig, crosstoolWithPiiiLd);
useConfiguration(
"--enabled_toolchain_types=" + CPP_TOOLCHAIN_TYPE,
"--experimental_platforms=//mock_platform:mock-piii-platform",
"--extra_toolchains=//mock_platform:toolchain_cc-compiler-piii");
ConfiguredTarget target =
ScratchAttributeWriter.fromLabelString(this, "cc_library", "//lib")
.setList("srcs", "a.cc")
.write();
ResolvedToolchainProviders providers =
(ResolvedToolchainProviders)
getRuleContext(target).getToolchainContext().getResolvedToolchainProviders();
CcToolchainProvider toolchain =
(CcToolchainProvider)
providers.getForToolchainType(Label.parseAbsolute(CPP_TOOLCHAIN_TYPE));
assertThat(toolchain.getToolPathFragment(CppConfiguration.Tool.LD).toString())
.contains("piii-ld");
}
}
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