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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.rules.cpp;
import com.google.devtools.build.lib.analysis.util.AnalysisMock;
import com.google.devtools.build.lib.vfs.FileSystemUtils;
import com.google.devtools.build.lib.vfs.Path;
import com.google.devtools.build.lib.view.config.crosstool.CrosstoolConfig;
import com.google.devtools.build.lib.view.config.crosstool.CrosstoolConfig.DefaultCpuToolchain;
import com.google.devtools.build.lib.view.config.crosstool.CrosstoolConfig.ToolPath;
import com.google.protobuf.TextFormat;
import java.io.IOException;
/**
* Helper class for the creation of crosstool toolchain factories.
*/
public class CrosstoolConfigurationHelper {
public static Path overwriteCrosstoolFile(Path workspace, String content) throws IOException {
Path crosstool =
workspace.getRelative(AnalysisMock.get().ccSupport().getMockCrosstoolPath() + "/CROSSTOOL");
long newMTime = crosstool.exists() ? crosstool.getLastModifiedTime() + 1 : -1;
crosstool.delete();
FileSystemUtils.createDirectoryAndParents(crosstool.getParentDirectory());
FileSystemUtils.writeContentAsLatin1(crosstool, content);
crosstool.setLastModifiedTime(newMTime);
return crosstool;
}
/**
* Overwrites the default CROSSTOOL file with one obtained by merging the simple complete
* toolchain with the given additional partial toolchain. Only {@code --cpu=piii} is valid.
*/
public static void overwriteCrosstoolWithToolchain(
Path workspace, CrosstoolConfig.CToolchain partial) throws IOException {
CrosstoolConfig.CrosstoolRelease.Builder release =
CrosstoolConfig.CrosstoolRelease.newBuilder();
release.mergeFrom(simpleCompleteToolchainProto());
CrosstoolConfig.CToolchain.Builder toolchain = CrosstoolConfig.CToolchain.newBuilder();
toolchain.mergeFrom(release.getToolchain(0));
toolchain.mergeFrom(partial);
release.setToolchain(0, toolchain.build());
overwriteCrosstoolFile(workspace, TextFormat.printToString(release.build()));
}
/**
* Overwrites the default CROSSTOOL file with a reasonable toolchain.
*/
public static void overwriteCrosstoolWithSimpleCompleteToolchain(Path workspace)
throws IOException {
overwriteCrosstoolFile(workspace, TextFormat.printToString(simpleCompleteToolchainProto()));
}
private static CrosstoolConfig.CrosstoolRelease simpleCompleteToolchainProto() {
CrosstoolConfig.CrosstoolRelease.Builder builder =
CrosstoolConfig.CrosstoolRelease.newBuilder()
.setMajorVersion("12")
.setMinorVersion("0")
.setDefaultTargetCpu("k8")
.addDefaultToolchain(
DefaultCpuToolchain.newBuilder()
.setCpu("k8")
.setToolchainIdentifier("k8-toolchain"));
CrosstoolConfig.CToolchain.Builder toolchainBuilder = newIncompleteToolchain();
toolchainBuilder
.setToolchainIdentifier("k8-toolchain")
.setHostSystemName("i686-unknown-linux-gnu")
.setTargetSystemName("i686-unknown-linux-gnu")
.setTargetCpu("k8")
.setTargetLibc("glibc-2.3.6-grte")
.setCompiler("gcc-4.3.1")
.setAbiVersion("gcc-3.4")
.setAbiLibcVersion("2.3.2")
.addCxxBuiltinIncludeDirectory("/include/directory");
builder.addToolchain(toolchainBuilder);
return builder.build();
}
private static CrosstoolConfig.CToolchain.Builder newIncompleteToolchain() {
CrosstoolConfig.CToolchain.Builder builder = CrosstoolConfig.CToolchain.newBuilder();
for (String tool :
new String[] {
"ar",
"cpp",
"gcc",
"gcov",
"ld",
"compat-ld",
"nm",
"objcopy",
"objdump",
"strip",
"dwp",
"gcov-tool"
}) {
builder.addToolPath(ToolPath.newBuilder().setName(tool).setPath(tool));
}
return builder;
}
}
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