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全Linux生活：第16天 - 在Linux下編譯Windows DLLs

最近工作上要做一個Windows下的JNI DLL，這原本在純Windows下是很簡單的事，但在Linux下，是有那麼一點麻煩。在Linux下要做cross platform compile，有幾個選擇：MingGW，Cygwin。但如果考量到team work的話，要強迫其他人也要使用Linux來寫程式也說不過去，所以目前暫時不考慮"純種"的cross platform compilation，我的作法是使用Windows下的C/C++ Compiler來進行編譯，考量到Comiler大小與不要有runtime相依性問題，那選擇有3個Visual C++ 6.0，MinGW Windows版，Borland C++ 5.5(什麼﹍這鬼東西還有人用嗎？)。當然，可以免費使用的只有MinGW與Borland C++ 5.5，而且Size最小的是Borland C++ 5.5，只需要50MB左右，最大的是Visual C++ 6.0，約180MB，第二名是MinGW，約120MB。

可是這些東西在Linux下可以用嗎？當然是不能直接用，但是透過WINE就可以。這樣做最大的好處是同一個專案可以在Linux與Windows下通用(甚至Mac OS X，但一樣要裝WINE才行)。

不囉唆，先準備JNI環境：

1. 首先在Eclipse建立一個HelloWorldJNI專案
2. 建立目錄結構如下圖：
   
   其中jdk_include目錄內的檔案請從32位元Windows版的JDK中複製取得。
   
   

如果想用Visual C++ 6.0，請服用：

1. 取得VIsual C++ 6.0：噓﹍不要問很恐怖﹍
2. 安裝Visual C++ 6.0：
   
   $ wine <PATH-TO-MSVC60-CD>/setup.exe
   
   
3. 在Eclipse建立MSVC60專案(General Project就可以了)
4. 複製Compiler檔案：
   
    $ cp -rvf "~/.wine/drive_c/Program Files/Microsoft Visual Studio/Common" <PATH-TO-MSVC60-PROJECT>
   $ cp -rvf "~/.wine/drive_c/Program Files/Microsoft Visual Studio/VC98" <PATH-TO-MSVC60-PROJECT>
   
   
   
   
5. 複製並修改vcvars32.bat：
   
   $ cp <PATH-TO-MSVC60-PROJECT>/VC98/Bin/VCVARS32.BAT <PATH-TO-HELLOWORLDJNI-PROJECT>/src/jni/bin/vcvars32.bat
   $ vi <PATH-TO-HELLOWORLDJNI-PROJECT>/src/jni/bin/vcvars32.bat
   
   @echo off
   set MSVC60_HOME=%CD%\..\..\..\msvc60
   
   rem
   rem Root of Visual Developer Studio Common files.
   set VSCommonDir=%MSVC60_HOME%\Common
   
   rem
   rem Root of Visual Developer Studio installed files.
   rem
   set MSDevDir=%MSVC60_HOME%\Common\msdev98
   
   rem
   rem Root of Visual C++ installed files.
   rem
   set MSVCDir=%MSVC60_HOME%\VC98
   
   rem
   rem VcOsDir is used to help create either a Windows 95 or Windows NT specific path.
   rem
   set VcOsDir=WIN95
   if "%OS%" == "Windows_NT" set VcOsDir=WINNT
   
   rem
   echo Setting environment for using Microsoft Visual C++ tools.
   rem
   
   if "%OS%" == "Windows_NT" set PATH=%MSDevDir%\BIN;%MSVCDir%\BIN;%VSCommonDir%\TOOLS\%VcOsDir%;%VSCommonDir%\TOOLS;%PATH%
   if "%OS%" == "" set PATH="%MSDevDir%\BIN";"%MSVCDir%\BIN";"%VSCommonDir%\TOOLS\%VcOsDir%";"%VSCommonDir%\TOOLS";"%windir%\SYSTEM";"%PATH%"
   set INCLUDE=%MSVCDir%\ATL\INCLUDE;%MSVCDir%\INCLUDE;%MSVCDir%\MFC\INCLUDE;%INCLUDE%
   set LIB=%MSVCDir%\LIB;%MSVCDir%\MFC\LIB;%LIB%
   
   set VcOsDir=
   set VSCommonDir=
   
   
6. 建立cl.bat：
   
   $ vi <PATH-TO-HELLOWORLDJNI-PROJECT>/src/jni/bin/cl.bat
   
   echo off
   @call bin\vcvars32.bat
   cl %*
   
   
7. 編輯build.xml：
   
   $ vi <PATH-TO-HELLOWORLDJNI-PROJECT>/build.xml
   
   <?xml version="1.0" encoding="UTF-8"?>
   <project name="Packaging Generator" default="all">
   
       <property name="dir.src" value="src" />
       <property name="dir.src.java" value="${dir.src}/java" />
       <property name="dir.src.junit" value="${dir.src}/junit" />
       <property name="dir.src.jni" value="${dir.src}/jni" />
       <property name="dir.src.jdkinclude" value="${dir.src}/jni/jdk_include" />
       <property name="dir.etc" value="etc" />
       <property name="dir.lib" value="lib" />
       <property name="dir.deploy" value="deploy" />
       <property name="dir.classes" value="tmp" />
       <property name="dir.build" value="build" />
   
       <target name="all">
           <antcall target="HelloWorld.dll" />
       </target>
   
       <target name="HelloWorld.dll">
           <property name="moduleName" value="HelloWorld" />
           <mkdir dir="${dir.deploy}" />
           <delete>
               <fileset dir="${dir.src.jni}" includes="${moduleName}.*" />
           </delete>
           <javah class="test.${moduleName}" outputFile="${dir.src.jni}/${moduleName}.h" classpath="${dir.classes}" />
           <exec dir="${dir.src.jni}" executable="wine" os="Linux,Mac OS X">
               <arg line="cmd /c bin\\cl -Ijdk_include -Ijdk_include\\win32 -I${moduleName} -MD -LD ${moduleName}\\${moduleName}.c -Fe${moduleName}.dll" />
           </exec>
           <exec dir="${dir.src.jni}" executable="cmd" os="Windows 95,Windows 98,Windows NT,Windows 2000,Windows XP,Windows Vista,Windows 7">
               <arg line="/c bin\\cl -Ijdk_include -Ijdk_include\\win32 -I${moduleName} -MD -LD ${moduleName}\\${moduleName}.c -Fe${moduleName}.dll" />
           </exec>
           <copy todir="${dir.deploy}" overwrite="true" failonerror="false">
               <fileset dir="${dir.src.jni}">
                   <include name="${moduleName}.dll" />
                   <include name="${moduleName}.lib" />
               </fileset>
           </copy>
           <delete>
               <fileset dir="${dir.src.jni}">
                   <include name="${moduleName}.*" />
               </fileset>
           </delete>
       </target>
   
   </project>
   
   
8. 執行build.xml，產生HelloWorld.dll：
   
   
   
   

如果想用MingGW，請服用：

1. 取得MingGW：MinGW官網
   
   $ wget http://sourceforge.net/projects/mingw/files/Automated%20MinGW%20Installer/mingw-get-inst/mingw-get-inst-20110316/mingw-get-inst-20110316.exe/download
   
   
   
2. 安裝MingGW：
   
   $ wine <PATH-TO-DOWNLOAD-DIR>/mingw-get-inst-20110316.exe
   
   
3. 在Eclipse建立MINGW專案(General Project就可以了)
4. 複製Compiler檔案：
   
    $ cp -rvf ~/.wine/drive_c/MingGW/* <PATH-TO-MINGW-PROJECT>
   
   
   
   
5. 建立mingwenv.bat：
    
   $ vi <PATH-TO-HELLOWORLDJNI-PROJECT>/src/jni/bin/mingwenv.bat
   
   @echo off
   set MINGW_HOME=..\..\..\mingw
   set PATH=%MINGW_HOME%\bin;%MINGW_HOME%\mingw32\bin;%PATH%
    
   
6. 建立gcc.bat：
   
   $ vi <PATH-TO-HELLOWORLDJNI-PROJECT>/src/jni/bin/gcc.bat
   
   echo off
   @call bin\mingwenv.bat
   gcc %*
   
   
7. 編輯build.xml：
   
   $ vi <PATH-TO-HELLOWORLDJNI-PROJECT>/build.xml
   
   <?xml version="1.0" encoding="UTF-8"?>
   <project name="Packaging Generator" default="all">
   
       <property name="dir.src" value="src" />
       <property name="dir.src.java" value="${dir.src}/java" />
       <property name="dir.src.junit" value="${dir.src}/junit" />
       <property name="dir.src.jni" value="${dir.src}/jni" />
       <property name="dir.src.jdkinclude" value="${dir.src}/jni/jdk_include" />
       <property name="dir.etc" value="etc" />
       <property name="dir.lib" value="lib" />
       <property name="dir.deploy" value="deploy" />
       <property name="dir.classes" value="tmp" />
       <property name="dir.build" value="build" />
   
       <target name="all">
           <antcall target="HelloWorld.dll" />
       </target>
   
       <target name="HelloWorld.dll">
           <property name="moduleName" value="HelloWorld" />
           <mkdir dir="${dir.deploy}" />
           <delete>
               <fileset dir="${dir.src.jni}" includes="${moduleName}.*" />
           </delete>
           <javah class="test.${moduleName}" outputFile="${dir.src.jni}/${moduleName}.h" classpath="${dir.classes}" />
           <exec dir="${dir.src.jni}" executable="wine" os="Linux,Mac OS X">
               <arg line="cmd /c bin\\gcc -Wall -D_JNI_IMPLEMENTATION_ -Wl,--kill-at -Ijdk_include -Ijdk_include\\win32 -I${moduleName} -shared ${moduleName}\\${moduleName}.c -o ${moduleName}.dll" />
           </exec>
           <exec dir="${dir.src.jni}" executable="cmd" os="Windows 95,Windows 98,Windows NT,Windows 2000,Windows XP,Windows Vista,Windows 7">
               <arg line="/c bin\\gcc -Wall -D_JNI_IMPLEMENTATION_ -Wl,--kill-at -Ijdk_include -Ijdk_include\\win32 -I${moduleName} -shared ${moduleName}\\${moduleName}.c -o ${moduleName}.dll" />
           </exec>
           <copy todir="${dir.deploy}" overwrite="true" failonerror="false">
               <fileset dir="${dir.src.jni}">
                   <include name="${moduleName}.dll" />
                   <include name="${moduleName}.lib" />
               </fileset>
           </copy>
           <delete>
               <fileset dir="${dir.src.jni}">
                   <include name="${moduleName}.*" />
               </fileset>
           </delete>
       </target>
   
   </project>
   
   
8. 執行build.xml，產生HelloWorld.dll：
   
   
   
   
   

如果想用Borland C++ 5.5，請服用：

1. 取得Borland C++ 5.5：Codegear官網
   
2. 安裝Borland C++ 5.5：
   
   $ wine <PATH-TO-DOWNLOAD-DIR>/freecommandLinetools.exe
   
   
3. 在Eclipse建立BCC55專案(General Project就可以了)
4. 複製Compiler檔案：
   
    $ cp -rvf ~/.wine/drive_c/Borland/BCC55/* <PATH-TO-BCC55-PROJECT>
   
   
   
   
5. 建立bcc55env.bat：
    
   $ vi <PATH-TO-HELLOWORLDJNI-PROJECT>/src/jni/bin/bcc55env.bat
   
   @echo off
   set BCC55_HOME=..\..\..\bcc55
   set PATH=%BCC55_HOME%\bin;%PATH%
    
   
6. 建立bcc32.bat：
   
   $ vi <PATH-TO-HELLOWORLDJNI-PROJECT>/src/jni/bin/bcc32.bat
   
   echo off
   @call bin\bcc55env.bat
   bcc32 %*
   
   
7. 編輯build.xml：
   
   $ vi <PATH-TO-HELLOWORLDJNI-PROJECT>/build.xml
   
   <?xml version="1.0" encoding="UTF-8"?>
   <project name="Packaging Generator" default="all">
   
       <property name="dir.src" value="src" />
       <property name="dir.src.java" value="${dir.src}/java" />
       <property name="dir.src.junit" value="${dir.src}/junit" />
       <property name="dir.src.jni" value="${dir.src}/jni" />
       <property name="dir.src.jdkinclude" value="${dir.src}/jni/jdk_include" />
       <property name="dir.etc" value="etc" />
       <property name="dir.lib" value="lib" />
       <property name="dir.deploy" value="deploy" />
       <property name="dir.classes" value="tmp" />
       <property name="dir.build" value="build" />
   
       <target name="all">
           <antcall target="HelloWorld.dll" />
       </target>
   
       <target name="HelloWorld.dll">
           <property name="moduleName" value="HelloWorld" />
           <mkdir dir="${dir.deploy}" />
           <delete>
               <fileset dir="${dir.src.jni}" includes="${moduleName}.*" />
           </delete>
           <javah class="test.${moduleName}" outputFile="${dir.src.jni}/${moduleName}.h" classpath="${dir.classes}" />
           <exec dir="${dir.src.jni}" executable="wine" os="Linux,Mac OS X">
               <arg line="cmd /c bin\\bcc32 -Ijdk_include -Ijdk_include\\win32 -I..\\..\\..\\bcc55\\Include -L..\\..\\..\\bcc55\\Lib -I${moduleName} -WD ${moduleName}\\${moduleName}.c -o${moduleName}.dll" />
           </exec>
           <exec dir="${dir.src.jni}" executable="cmd" os="Windows 95,Windows 98,Windows NT,Windows 2000,Windows XP,Windows Vista,Windows 7">
               <arg line="/c bin\\bcc32 -Ijdk_include -Ijdk_include\\win32 -I..\\..\\..\\bcc55\\Include -L..\\..\\..\\bcc55\\Lib -I${moduleName} -WD ${moduleName}\\${moduleName}.c -o${moduleName}.dll" />
           </exec>
           <copy todir="${dir.deploy}" overwrite="true" failonerror="false">
               <fileset dir="${dir.src.jni}">
                   <include name="${moduleName}.dll" />
                   <include name="${moduleName}.lib" />
               </fileset>
           </copy>
           <delete>
               <fileset dir="${dir.src.jni}">
                   <include name="${moduleName}.*" />
               </fileset>
           </delete>
       </target>
   
   </project>
    
   
8. 執行build.xml，產生HelloWorld.dll：