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// Copyright 2016 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.bazel.rules.android.ndkcrosstools.r12;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.devtools.build.lib.bazel.rules.android.ndkcrosstools.NdkPaths;
import com.google.devtools.build.lib.bazel.rules.android.ndkcrosstools.StlImpl;
import com.google.devtools.build.lib.view.config.crosstool.CrosstoolConfig.CToolchain;
import com.google.devtools.build.lib.view.config.crosstool.CrosstoolConfig.CrosstoolRelease;
import com.google.devtools.build.lib.view.config.crosstool.CrosstoolConfig.DefaultCpuToolchain;
import java.util.ArrayList;
import java.util.List;
import java.util.Map.Entry;
/** Generates a CrosstoolRelease proto for the Android NDK. */
final class AndroidNdkCrosstoolsR12 {
/** {@code ./ndk/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --version} */
static final String CLANG_VERSION = "3.8.256229";
private AndroidNdkCrosstoolsR12() {}
/**
* Creates a CrosstoolRelease proto for the Android NDK, given the API level to use and the
* release revision. The crosstools are generated through code rather than checked in as a flat
* file to reduce the amount of templating needed (for parameters like the release name and
* certain paths), to reduce duplication, and to make it easier to support future versions of the
* NDK. TODO(bazel-team): Eventually we should move this into Skylark so the crosstools can be
* updated independently of Bazel itself.
*
* @return A CrosstoolRelease for the Android NDK.
*/
static CrosstoolRelease create(NdkPaths ndkPaths, StlImpl stlImpl, String hostPlatform) {
return CrosstoolRelease.newBuilder()
.setMajorVersion("android")
.setMinorVersion("")
.setDefaultTargetCpu("armeabi")
.addAllDefaultToolchain(getDefaultCpuToolchains(stlImpl))
.addAllToolchain(createToolchains(ndkPaths, stlImpl, hostPlatform))
.build();
}
private static ImmutableList<CToolchain> createToolchains(
NdkPaths ndkPaths, StlImpl stlImpl, String hostPlatform) {
List<CToolchain.Builder> toolchainBuilders = new ArrayList<>();
toolchainBuilders.addAll(new ArmCrosstools(ndkPaths, stlImpl).createCrosstools());
toolchainBuilders.addAll(new MipsCrosstools(ndkPaths, stlImpl).createCrosstools());
toolchainBuilders.addAll(new X86Crosstools(ndkPaths, stlImpl).createCrosstools());
ImmutableList.Builder<CToolchain> toolchains = new ImmutableList.Builder<>();
// Set attributes common to all toolchains.
for (CToolchain.Builder toolchainBuilder : toolchainBuilders) {
toolchainBuilder
.setHostSystemName(hostPlatform)
.setTargetLibc("local")
.setAbiVersion(toolchainBuilder.getTargetCpu())
.setAbiLibcVersion("local");
// builtin_sysroot is set individually on each toolchain.
toolchainBuilder.addCxxBuiltinIncludeDirectory("%sysroot%/usr/include");
toolchains.add(toolchainBuilder.build());
}
return toolchains.build();
}
private static ImmutableList<DefaultCpuToolchain> getDefaultCpuToolchains(StlImpl stlImpl) {
// TODO(bazel-team): It would be better to auto-generate this somehow.
ImmutableMap<String, String> defaultCpus =
ImmutableMap.<String, String>builder()
// arm
.put("armeabi", "arm-linux-androideabi-4.9")
.put("armeabi-v7a", "arm-linux-androideabi-4.9-v7a")
.put("arm64-v8a", "aarch64-linux-android-4.9")
// mips
.put("mips", "mipsel-linux-android-4.9")
.put("mips64", "mips64el-linux-android-4.9")
// x86
.put("x86", "x86-4.9")
.put("x86_64", "x86_64-4.9")
.build();
ImmutableList.Builder<DefaultCpuToolchain> defaultCpuToolchains = ImmutableList.builder();
for (Entry<String, String> defaultCpu : defaultCpus.entrySet()) {
defaultCpuToolchains.add(
DefaultCpuToolchain.newBuilder()
.setCpu(defaultCpu.getKey())
.setToolchainIdentifier(defaultCpu.getValue() + "-" + stlImpl.getName())
.build());
}
return defaultCpuToolchains.build();
}
}
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