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// 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.packages.util;
import com.google.common.base.Joiner;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.view.config.crosstool.CrosstoolConfig;
import com.google.protobuf.TextFormat;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.LinkedHashSet;
import java.util.Set;
/**
* A helper class to create a crosstool package containing a CROSSTOOL file, and the various
* rules needed for a mock - use this only for configured target tests, not for execution tests.
*/
final class Crosstool {
private static final ImmutableList<String> CROSSTOOL_BINARIES =
ImmutableList.of("ar", "as", "compile", "dwp", "link", "objcopy");
private final MockToolsConfig config;
private final String crosstoolTop;
private String version;
private String crosstoolFileContents;
private boolean addEmbeddedRuntimes;
private String staticRuntimesLabel;
private String dynamicRuntimesLabel;
private ImmutableList<String> archs;
private boolean addModuleMap;
private boolean supportsHeaderParsing;
Crosstool(MockToolsConfig config, String crosstoolTop) {
this.config = config;
this.crosstoolTop = crosstoolTop;
}
public Crosstool setAddModuleMap(boolean addModuleMap) {
this.addModuleMap = addModuleMap;
return this;
}
public Crosstool setCrosstoolFile(String version, String crosstoolFileContents) {
this.version = version;
this.crosstoolFileContents = crosstoolFileContents;
return this;
}
public Crosstool setSupportedArchs(ImmutableList<String> archs) {
this.archs = archs;
return this;
}
public Crosstool setSupportsHeaderParsing(boolean supportsHeaderParsing) {
this.supportsHeaderParsing = supportsHeaderParsing;
return this;
}
public Crosstool setEmbeddedRuntimes(
boolean addEmbeddedRuntimes, String staticRuntimesLabel, String dynamicRuntimesLabel) {
this.addEmbeddedRuntimes = addEmbeddedRuntimes;
this.staticRuntimesLabel = staticRuntimesLabel;
this.dynamicRuntimesLabel = dynamicRuntimesLabel;
return this;
}
public void write() throws IOException {
String runtimes = "";
for (String arch : archs) {
runtimes +=
Joiner.on('\n')
.join(
"filegroup(name = 'dynamic-runtime-libs-" + arch + "',",
" licenses = ['unencumbered'],",
" srcs = ['libdynamic-runtime-lib-source.so'])",
"filegroup(name = 'static-runtime-libs-" + arch + "',",
" licenses = ['unencumbered'],",
" srcs = ['static-runtime-lib-source.a'])\n");
}
StringBuilder compilationTools = new StringBuilder();
for (String compilationTool : CROSSTOOL_BINARIES) {
Collection<String> archTargets = new ArrayList<>();
for (String arch : archs) {
archTargets.add(compilationTool + '-' + arch);
}
compilationTools.append(
String.format(
"filegroup(name = '%s', srcs = ['%s'])\n",
compilationTool,
Joiner.on("', '").join(archTargets)));
for (String archTarget : archTargets) {
compilationTools.append(
String.format("filegroup(name = '%s', srcs = [':everything-multilib'])\n", archTarget));
}
}
CrosstoolConfig.CrosstoolRelease.Builder configBuilder =
CrosstoolConfig.CrosstoolRelease.newBuilder();
TextFormat.merge(crosstoolFileContents, configBuilder);
StringBuilder compilerMap = new StringBuilder();
// Remove duplicates
Set<String> keys = new LinkedHashSet<>();
for (CrosstoolConfig.CToolchain toolchain : configBuilder.build().getToolchainList()) {
String key = String.format("%s|%s", toolchain.getTargetCpu(), toolchain.getCompiler());
if (!keys.contains(key)) {
keys.add(key);
compilerMap.append(
String.format("'%s': ':cc-compiler-%s',\n", key, toolchain.getTargetCpu()));
}
}
for (String arch : archs) {
String compilerRule;
String staticRuntimesString =
staticRuntimesLabel == null ? "" : ", '" + staticRuntimesLabel + "'";
String dynamicRuntimesString =
dynamicRuntimesLabel == null ? "" : ", '" + dynamicRuntimesLabel + "'";
compilerRule =
Joiner.on("\n")
.join(
"cc_toolchain(",
" name = 'cc-compiler-" + arch + "',",
" output_licenses = ['unencumbered'],",
addModuleMap ? " module_map = 'crosstool.cppmap'," : "",
" cpu = '" + arch + "',",
" compiler = 'gcc-4.4.0',",
" ar_files = 'ar-" + arch + "',",
" as_files = 'as-" + arch + "',",
" compiler_files = 'compile-" + arch + "',",
" dwp_files = 'dwp-" + arch + "',",
" linker_files = 'link-" + arch + "',",
" strip_files = ':every-file',",
" objcopy_files = 'objcopy-" + arch + "',",
" all_files = ':every-file',",
" licenses = ['unencumbered'],",
supportsHeaderParsing ? " supports_header_parsing = 1," : "",
" dynamic_runtime_libs = ['dynamic-runtime-libs-"
+ arch
+ "'"
+ dynamicRuntimesString
+ "],",
" static_runtime_libs = ['static-runtime-libs-"
+ arch
+ "'"
+ staticRuntimesString
+ "])");
compilationTools.append(compilerRule + "\n");
}
String build =
Joiner.on("\n")
.join(
"package(default_visibility=['//visibility:public'])",
"licenses(['restricted'])",
"",
"alias(name = 'toolchain', actual = 'everything')",
"filegroup(name = 'everything-multilib',",
" srcs = glob(['" + version + "/**/*'],",
" exclude_directories = 1),",
" output_licenses = ['unencumbered'])",
"",
String.format(
"cc_toolchain_suite(name = 'everything', toolchains = {%s})", compilerMap),
"",
String.format(
"filegroup(name = 'every-file', srcs = ['%s'%s%s])",
Joiner.on("', '").join(CROSSTOOL_BINARIES),
addEmbeddedRuntimes ? ", ':dynamic-runtime-libs-k8'" : "",
addEmbeddedRuntimes ? ", ':static-runtime-libs-k8'" : ""),
"",
compilationTools.toString(),
runtimes,
"",
// We add an empty :malloc target in case we need it.
"cc_library(name = 'malloc')");
config.create(crosstoolTop + "/" + version + "/x86/bin/gcc");
config.create(crosstoolTop + "/" + version + "/x86/bin/ld");
config.getPath(crosstoolTop + "/CROSSTOOL");
config.overwrite(crosstoolTop + "/BUILD", build);
config.overwrite(crosstoolTop + "/CROSSTOOL", crosstoolFileContents);
config.create(crosstoolTop + "/crosstool.cppmap", "module crosstool {}");
}
}
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