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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;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Iterables;
import com.google.devtools.build.lib.bazel.rules.android.ndkcrosstools.r10e.NdkMajorRevisionR10;
import com.google.devtools.build.lib.bazel.rules.android.ndkcrosstools.r11.NdkMajorRevisionR11;
import com.google.devtools.build.lib.bazel.rules.android.ndkcrosstools.r12.NdkMajorRevisionR12;
import com.google.devtools.build.lib.bazel.rules.android.ndkcrosstools.r13.NdkMajorRevisionR13;
import com.google.devtools.build.lib.util.OS;
import com.google.devtools.build.lib.view.config.crosstool.CrosstoolConfig.CrosstoolRelease;
/**
* Helper methods for generating a CrosstoolRelease proto for the Android NDK based on a particular
* NDK release.
*/
public final class AndroidNdkCrosstools {
private AndroidNdkCrosstools() {}
// NDK minor revisions should be backwards compatible within a major revision, so all that needs
// to be tracked here are the major revision numbers.
public static final ImmutableMap<String, NdkMajorRevision> KNOWN_NDK_MAJOR_REVISIONS =
ImmutableMap.of(
"10", new NdkMajorRevisionR10(),
"11", new NdkMajorRevisionR11(),
"12", new NdkMajorRevisionR12(),
"13", new NdkMajorRevisionR13());
public static final String LATEST_KNOWN_REVISION =
Iterables.getLast(KNOWN_NDK_MAJOR_REVISIONS.keySet());
/**
* Exception thrown when there is an error creating the crosstools file.
*/
public static class NdkCrosstoolsException extends Exception {
private NdkCrosstoolsException(String msg) {
super(msg);
}
}
public static CrosstoolRelease create(
NdkRelease ndkRelease,
NdkPaths ndkPaths,
StlImpl stlImpl,
String hostPlatform) {
NdkMajorRevision ndkMajorRevision;
if (ndkRelease.isValid) {
// NDK minor revisions should be backwards compatible within a major revision, so it should be
// enough to check the major revision of the release.
ndkMajorRevision = KNOWN_NDK_MAJOR_REVISIONS.get(ndkRelease.majorRevision);
} else {
// If the NDK revision isn't valid, try using the latest one we know about.
ndkMajorRevision = KNOWN_NDK_MAJOR_REVISIONS.get(LATEST_KNOWN_REVISION);
}
return ndkMajorRevision.crosstoolRelease(ndkPaths, stlImpl, hostPlatform);
}
public static String getHostPlatform(NdkRelease ndkRelease) throws NdkCrosstoolsException {
String hostOs;
switch (OS.getCurrent()) {
case DARWIN:
hostOs = "darwin";
break;
case LINUX:
hostOs = "linux";
break;
case WINDOWS:
hostOs = "windows";
if (!ndkRelease.is64Bit) {
// 32-bit windows paths don't have the "-x86" suffix in the NDK (added below), but
// 64-bit windows does have the "-x86_64" suffix.
return hostOs;
}
break;
case UNKNOWN:
default:
throw new NdkCrosstoolsException(
String.format("NDK does not support the host platform \"%s\"", OS.getCurrent()));
}
// Use the arch from the NDK rather than detecting the actual platform, since it's possible
// to use the 32-bit NDK on a 64-bit machine.
String hostArch = ndkRelease.is64Bit ? "x86_64" : "x86";
return hostOs + "-" + hostArch;
}
public static boolean isKnownNDKRevision(NdkRelease ndkRelease) {
return KNOWN_NDK_MAJOR_REVISIONS.containsKey(ndkRelease.majorRevision);
}
}
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