--- a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/tool/ToolOption.java	Mon Nov 20 18:46:52 2017 -0800
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/tool/ToolOption.java	Mon Nov 20 16:50:22 2017 -0800
@@ -150,6 +150,7 @@
         @Override
         public void process(Helper helper, String arg) throws InvalidValueException {
             Option.SOURCE.process(helper.getOptionHelper(), primaryName, arg);
+            Option.TARGET.process(helper.getOptionHelper(), Option.TARGET.primaryName, arg);
         }
     },
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/langtools/jdk/javadoc/tool/testSourceOption/TestSourceOption.java	Mon Nov 20 16:50:22 2017 -0800
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8187588
+ * @summary -bootclasspath should work with -source 8
+ * @modules jdk.compiler/com.sun.tools.javac.api
+ *          jdk.compiler/com.sun.tools.javac.main
+ *          jdk.javadoc/jdk.javadoc.internal.api
+ *          jdk.javadoc/jdk.javadoc.internal.tool
+ * @library /tools/lib
+ * @build toolbox.JavacTask toolbox.JavadocTask toolbox.TestRunner toolbox.ToolBox
+ * @run main TestSourceOption
+ */
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import toolbox.JarTask;
+import toolbox.JavadocTask;
+import toolbox.ModuleBuilder;
+import toolbox.Task;
+import toolbox.Task.Expect;
+import toolbox.TestRunner;
+import toolbox.ToolBox;
+
+import javax.tools.JavaFileManager;
+import javax.tools.StandardLocation;
+import javax.tools.ToolProvider;
+
+public class TestSourceOption extends TestRunner {
+
+    public static void main(String... args) throws Exception {
+        TestSourceOption t = new TestSourceOption();
+        t.runTests(m -> new Object[] { Paths.get(m.getName()) });
+    }
+
+    private final ToolBox tb = new ToolBox();
+
+    TestSourceOption() throws IOException {
+        super(System.err);
+    }
+
+    @Test
+    public void testSourceWithBootclasspath(Path base) throws Exception {
+        Files.createDirectory(base);
+
+        Path smallRtJar = base.resolve("small-rt.jar");
+        try (JavaFileManager fm = ToolProvider.getSystemJavaCompiler()
+                .getStandardFileManager(null, null, null)) {
+
+            new JarTask(tb, smallRtJar)
+                    .files(fm, StandardLocation.PLATFORM_CLASS_PATH,
+                            "java.lang.**", "java.io.*", "java.util.*")
+                    .run();
+        }
+
+        tb.writeJavaFiles(base, "public class C { }");
+        Path out = base.resolve("out");
+        Files.createDirectory(out);
+
+        JavadocTask task = new JavadocTask(tb);
+        task.outdir(out)
+            .options("-bootclasspath", smallRtJar.toString(),
+                     "-source", "8")
+            .files(base.resolve("C.java"))
+            .run(Expect.SUCCESS);
+    }
+}