環境：

作業系統 ubuntu-14.04-desktop-i386

到https://allseenalliance.org網站上下載原始碼包 alljoyn-suite-14.06.00_beta-src.tar.gz

copy到/opt下，解壓，更名為/opt/alljoyn-14.06

下載好junit-4.9.jar

$ sudo cp junit-4.9.jar /usr/share/java/

環境變數 

JAVA_HOME=/usr/java/jdk1.7.0_25

CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:/usr/share/java/junit-4.9.jar

PATH=$JAVA_HOME/bin:$PATH

AJ_ROOT=/opt/alljoyn-14.06

下面開始記錄過程

$ cd $AJ_ROOT/core/alljoyn

檢視該目錄結構，初始的內容如下

$ tree -L 1
.
├── alljoyn_c
├── alljoyn_core
├── alljoyn_java
├── alljoyn_js
├── alljoyn_objc
├── alljoyn_unity
├── build_core
├── build.xml
├── common
├── README.md
├── README.txt
├── SConstruct
└── services
 

由於我不需要JavaScript, Objective-C, Unity的BINDINGS，我可以直接把這3個相關的目錄刪掉，也可以在編譯時指定引數，如

$ scons OS=linux CPU=x86 BINDINGS=c,cpp,java

命令開始執行後，一開始編譯cpp時，進展還比較順利。可當編譯到Java時，輸出內容包括以下幾類資訊

（1）

warning: [path] bad path element "/usr/share/java/junit4.9.jar": no such file or directory
alljoyn_java/test/org/alljoyn/bus/AddressBookTest.java:23: error: package junit.framework does not exist
 

（2）

alljoyn_java/test/org/alljoyn/bus/MarshalTest.java:1153: warning: [rawtypes] found raw type: TreeMap
        TreeMap<String, String>[] aaess = (TreeMap<String, String>[]) new TreeMap[2];
                                                                          ^
  missing type arguments for generic class TreeMap<K,V>
  where K,V are type-variables:
    K extends Object declared in class TreeMap
    V extends Object declared in class TreeMap

alljoyn_java/test/org/alljoyn/bus/MultipleReturnValuesTest.java:69: warning: [rawtypes] found raw type: HashMap
            HashMap<String,String>[] hm = (HashMap<String,String>[]) new HashMap[2];
                                                                         ^
  missing type arguments for generic class HashMap<K,V>
  where K,V are type-variables:
    K extends Object declared in class HashMap
    V extends Object declared in class HashMap

（3）

(......前面還有若干行類似的)
alljoyn_java/test/org/alljoyn/bus/ifaces/IntrospectableTest.java:54: warning: [rawtypes] found raw type: Class
                                                         new Class[] { Introspectable.class });
                                                             ^
  missing type arguments for generic class Class<T>
  where T is a type-variable:
    T extends Object declared in class Class
alljoyn_java/test/org/alljoyn/bus/ifaces/PeerTest.java:64: warning: [rawtypes] found raw type: Class
                                                         new Class[] { Peer.class });
                                                             ^
  missing type arguments for generic class Class<T>
  where T is a type-variable:
    T extends Object declared in class Class
100 errors
93 warnings
scons: *** [alljoyn_java/test/build/linux/x86/debug/obj/classes/org/alljoyn/bus/AddressBookInterface.class] Error 1
scons: building terminated because of errors.

第（1）類errors很多，都是跟junit相關的。其實我在閱讀官方文件時已經注意到junit的問題了，junit-4.9.jar的包也下好了，也添加了相應的環境變數，可坑爹的是，我設定環境變數時少打了個"-"，囧rz。如果你壓根沒下載junit的jar包，或者沒設定junit的環境變數，那麼編譯java的時候肯定是會報這些errors的。

第（2）（3）類warnings，一看就是泛型的問題，忽略之。

更正錯誤，在CLASSPATH環境變數裡面新增/usr/share/java/junit-4.9.jar後

再次輸入編譯命令

$ scons OS=linux CPU=x86 BINDINGS=c,cpp,java

輸出資訊包括

wsbuild(["ws"], ["build_core/$DISTDIR"])
Evaluating whitespace compliance...
Config: /opt/alljoyn-14.06/core/alljoyn/build_core/tools/conf/ajuncrustify.cfg
Note: enter 'scons -h' to see whitespace (WS) options
whitespace.db not found a new one will be created.
It appears that 'uncrustify' is not installed or is not on your PATH. Please check your system and try again.
scons: *** [ws] Explicit exit, status 2
scons: building terminated because of errors.

檢視官方文件可以看到這麼一段：

Whitespace policy checker

By default the whitespace policy checker runs every time. If you continually get build errors associated with the whitespace.py script, it can be shut off using this command:

$ scons WS=off

If the whitespace policy checker reports a whitespace policy violation, it lists which files have the violation. To see the lines of code that are violating the AllJoyn whitespace policy, run:

$ scons WS=detail

Uncrustify can automatically fix your files to adhere to the whitespace policy.

$ scons WS=fix

於是將編譯命令改為

$ scons OS=linux CPU=x86 WS=off BINDINGS=c,cpp,java

終於得到輸出

scons: done building targets.

而且可以看到

[email protected]:/opt/alljoyn-14.06/core/alljoyn/build/linux/x86/debug/dist/java/lib$ ls
liballjoyn_java.so

終於得到想要的liballjoyn_java.so，這是linux下的共享庫，有點類似Windows下的.dll檔案。

用AllJoyn框架編寫的Java程式在需要執行時，會用到liballjoyn_java.so