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// Copyright 2018 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;
/**
* DO NOT USE in Bazel.
*
* <p>A temporary, and very regrettable Google-only hack that allows us to support targeting other
* platforms in certain cases.
*/
public class FakeCPU {
private FakeCPU() {
// Private constructor to prohibit creating objects.
}
/**
* These are fake CPU values used to indicate that amd64 OSX / Windows should be
* the targeted architecture and platform. This is a hack to support compiling
* Go targeting OSX and Windows, until we have proper support for this kind of thing.
* It is largely unsupported.
*/
public static final String DARWIN_FAKE_CPU = "x86_64-darwin";
public static final String WINDOWS_FAKE_CPU_64 = "x86_64-windows";
public static final String WINDOWS_FAKE_CPU_32 = "x86_32-windows";
public static boolean isFakeCPU(String cpu) {
return DARWIN_FAKE_CPU.equals(cpu) || WINDOWS_FAKE_CPU_32.equals(cpu)
|| WINDOWS_FAKE_CPU_64.equals(cpu);
}
/**
* Returns the real CPU for a (possible) fake CPU. If isFakeCPU(fakeCPU)
* returns true,
* this method will return the actual target CPU that should be used.
* Otherwise, it
* will simply return fakeCPU.
*/
public static String getRealCPU(String fakeCPU) {
if (isFakeCPU(fakeCPU)) {
// We have a special fake CPU for 32 bit Windows binaries.
if (WINDOWS_FAKE_CPU_32.equals(fakeCPU)) {
return "piii";
}
// If targeting darwin or windows 64, pretend to be k8 so that we don't need to
// mess with crosstool configurations. A big fat warning was printed by the
// ConfigurationFactory warning people that they shouldn't expect anything
// other than go_{binary,library} to work, so the spurious
// k8 results we will return for other languages are fine.
return "k8";
} else {
return fakeCPU;
}
}
}
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