| // Copyright 2015 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.Iterables; |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.analysis.ConfiguredTarget; |
| import com.google.devtools.build.lib.analysis.FileProvider; |
| import com.google.devtools.build.lib.analysis.util.BuildViewTestCase; |
| import com.google.devtools.build.lib.packages.util.Crosstool.CcToolchainConfig; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** |
| * Test for shared library linking {@link CppLinkAction}. |
| */ |
| @RunWith(JUnit4.class) |
| public final class LibraryLinkingTest extends BuildViewTestCase { |
| private List<String> getLinkOpts(CppLinkAction linkAction, String... optionPatterns) |
| throws Exception { |
| // Strip the first parameters from the argv, which are the dynamic library script |
| // (usually tools/cpp/link_dynamic_library.sh), and its arguments. |
| return linkAction.getArguments().subList(1, optionPatterns.length + 1); |
| } |
| |
| private void assertLinkopts(CppLinkAction linkAction, String... optionPatterns) throws Exception { |
| List<String> linkopts = getLinkOpts(linkAction, optionPatterns); |
| for (int i = 0; i < optionPatterns.length; i++) { |
| assertThat(linkopts.get(i)).matches(optionPatterns[i]); |
| } |
| } |
| |
| @Test |
| public void testGeneratedLib() throws Exception { |
| getAnalysisMock() |
| .ccSupport() |
| .setupCcToolchainConfig( |
| mockToolsConfig, |
| CcToolchainConfig.builder().withFeatures(CppRuleClasses.SUPPORTS_DYNAMIC_LINKER)); |
| |
| useConfiguration("--cpu=k8", "--noincompatible_remove_legacy_whole_archive"); |
| ConfiguredTarget genlib = |
| scratchConfiguredTarget( |
| "genrule", |
| "thebinary.so", |
| "genrule(name = 'genlib',", |
| " outs = ['genlib.a'],", |
| " cmd = '')", |
| "cc_library(name = 'thelib',", |
| " srcs = [':genlib'],", |
| " linkstatic = 1)", |
| "cc_binary(name = 'thebinary.so',", |
| " deps = [':thelib'],", |
| " linkstatic = 1,", |
| " linkshared = 1)"); |
| Artifact executable = getExecutable(genlib); |
| CppLinkAction linkAction = (CppLinkAction) getGeneratingAction(executable); |
| assertLinkopts( |
| linkAction, |
| "-shared", |
| "-o", |
| analysisMock.getProductName() + "-out/.+/genrule/thebinary.so", |
| "-Wl,-whole-archive", |
| analysisMock.getProductName() + "-out/.+/genrule/genlib.a", |
| "-Wl,-no-whole-archive"); |
| } |
| |
| /** |
| * Tests that the shared library version of a cc_library includes linkopts settings |
| * in its link command line, but the archive library version doesn't. |
| */ |
| @Test |
| public void testCcLibraryLinkopts() throws Exception { |
| getAnalysisMock() |
| .ccSupport() |
| .setupCcToolchainConfig( |
| mockToolsConfig, |
| CcToolchainConfig.builder().withFeatures(CppRuleClasses.SUPPORTS_DYNAMIC_LINKER)); |
| |
| scratch.overwriteFile( |
| "custom_malloc/BUILD", |
| "cc_library(name = 'custom_malloc',", |
| " srcs = ['custom_malloc.cc'],", |
| " linkopts = ['-Lmalloc_dir -lmalloc_opt']);"); |
| |
| ConfiguredTarget ccLib = getConfiguredTarget("//custom_malloc:custom_malloc"); |
| final String linkOpt1 = "-Lmalloc_dir"; |
| final String linkOpt2 = "-lmalloc_opt"; |
| |
| // Archive library version: |
| Artifact archiveLib = |
| Iterables.getOnlyElement( |
| Iterables.filter( |
| ccLib.getProvider(FileProvider.class).getFilesToBuild().toList(), |
| (artifact) -> artifact.getFilename().equals("libcustom_malloc.a"))); |
| CppLinkAction archiveLink = (CppLinkAction) getGeneratingAction(archiveLib); |
| List<String> args = archiveLink.getArguments(); |
| assertThat(args).doesNotContain(linkOpt1); |
| assertThat(args).doesNotContain(linkOpt2); |
| |
| // Shared library version: |
| Artifact soLib = |
| Iterables.getOnlyElement( |
| ccLib |
| .get(CcInfo.PROVIDER) |
| .getCcLinkingContext() |
| .getDynamicLibrariesForRuntime(/* linkingStatically= */ false)); |
| // This artifact is generated by a SolibSymlinkAction, so we need to go back two levels. |
| CppLinkAction solibLink = |
| (CppLinkAction) getGeneratingAction(getGeneratingAction(soLib).getPrimaryInput()); |
| args = solibLink.getArguments(); |
| assertThat(args).contains(linkOpt1); |
| assertThat(args).contains(linkOpt2); |
| } |
| } |