com.facebook.buck.cxx.Linkers.java Source code

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Here is the source code for com.facebook.buck.cxx.Linkers.java

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/*
 * Copyright 2015-present Facebook, Inc.
 *
 * 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.facebook.buck.cxx;

import com.google.common.collect.ImmutableList;

public class Linkers {

    private Linkers() {
    }

    /**
     * Prefixes each of the given linker arguments with "-Xlinker" so that the compiler linker
     * driver will pass these arguments directly down to the linker rather than interpreting them
     * itself.
     *
     * e.g. ["-rpath", "hello/world"] -> ["-Xlinker", "-rpath", "-Xlinker", "hello/world"]
     *
     * Arguments that do not contain commas can instead be passed using the shorter
     * "-Wl,ARGUMENT" form.
     *
     * e.g., ["-rpath", "hello/world"] -> ["-Wl,-rpath", "-Wl,hello/world" ]
     *
     * @param args arguments for the linker.
     * @return arguments to be passed to the compiler linker driver.
     */
    public static Iterable<String> iXlinker(Iterable<String> args) {
        ImmutableList.Builder<String> escaped = ImmutableList.builder();
        for (String arg : args) {
            if (arg.contains(",")) {
                escaped.add("-Xlinker");
                escaped.add(arg);
            } else {
                escaped.add("-Wl," + arg);
            }
        }

        return escaped.build();
    }

    public static Iterable<String> iXlinker(String... args) {
        return iXlinker(ImmutableList.copyOf(args));
    }

}