VxWorks6.6開發共享庫指南要點

開放封閉原則（OCP，Open Closed Principle）是所有面向對象原則的核心。軟件設計本身所追求的目標就是封裝變化、降低耦合，而開放封閉原則正是對這一目標的最直接體現。

在軟件架構中，模塊化編程思想將系統分成很多的模塊，模塊內部關注自身需要實現的核心業務。模塊間的低耦合，而模塊內的高聚合。

在Windows、Linux及unix等操作系統中，我們常常看見動態鏈接庫（.dll/.so），靜態庫（.lib/.a）身影。動態鏈接庫和靜態庫也就是我們所說的模塊化設計思想。

共享庫的主要特徵是實現資源共享，信息封裝隱蔽，這樣會帶來這樣的優勢：

1) 當開發商業化軟件時，保護了自己的知識產權；

2) 軟件架構清晰，減少軟件測試的難度；

3) 模塊化軟件升級便捷。

在VxWorks6.X之後，Workbench3.0工程中有了Shared library project功能。互聯網上這方面內容不知道爲何那麼少？這一點我感覺比較迷惑？

本文從Windows環境下開發常用的動態鏈接庫和靜態庫兩點出發，解決我們初學者首次在開發過程中可能出現各種的問題（如有）。考慮到我們在動態編譯過程中，使用蒼白的文本可能並不能完全清晰地說明問題。因此，本文使用了大量的截圖，描述編譯中需要的配置。

儘管本文使用C++編寫的測試範例很簡單，但對於入門VxWorks共享庫編程還是有所幫助的，希望此文能對你將來開發複雜的系統提供微薄之力。

下面的內容可能顯得比較簡單，而有些編譯過程中碰到的問題，網絡上也需求不到答案，也許你也曾經困惑過。

一、目錄組織

WorkSapce：“D:\casco800A\fep\code\test_sys”

文件組織：--d:/casco800A

---------------------/fep

---------------------------/bin

---------------------------/lib

---------------------------/code

----------------------------------/test_sys

二、設置環境變量FEPROOT

注意：在文件路徑書寫上，除了Windows相關的操作系統，其他操作系統中，我建議你統一使用反斜槓，否則在後面使用該環境變量時出現不能識別的問題。

圖2.1 環境變量設置

三、創建動態鏈接庫（.so）

我們首先建立一個名稱爲“libdemo”動態鏈接庫。根據嚮導按照如下步驟執行即可，其餘選項都按系統默認。

圖3.1 新建so動態鏈接庫

圖3.2 選擇動態鏈接庫

圖3.3 完成嚮導

圖3.4 生成後的框架

圖2.4生成的框架，在沒有編譯之前只有兩個目錄，此時我們不要急着編譯，否則你可能出現沒法編譯生成期望的libdemo.so文件。

關於爲何加入的新文件，workbench不能生成*.so，這一點我在網絡上查找了很多文檔都沒提示說明，也許WorkBench就是這麼設計的。

其實具體的原因很簡單，該開發環境選擇的工程一旦編譯，自動生成MakeFile就不因爲新加的文件而自動修改。當前我們要添加相應的資源文件*.cpp和*.h文件，具體內容在後面會講到。

圖3.5 添加兩個文件夾inc和src，並建立相應的文件

1）stdafx.h實現代碼：

// stdafx.h : include file for standard system include files,

// or project specific include files that are used frequently, but

// are changed infrequently

#if !defined(AFX_STDAFX_H__E5CE9468_AAF9_46A6_979B_9C125F6E9D00__INCLUDED_)

#define AFX_STDAFX_H__E5CE9468_AAF9_46A6_979B_9C125F6E9D00__INCLUDED_

#if _MSC_VER > 1000

#pragma once

#endif // _MSC_VER > 1000

#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers

#include <stdio.h>

// TODO: reference additional headers your program requires here

//{{AFX_INSERT_LOCATION}}

// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_STDAFX_H__E5CE9468_AAF9_46A6_979B_9C125F6E9D00__INCLUDED_)

2）stdafx.cpp實現代碼：

// stdafx.cpp : source file that includes just the standard includes

// libdemo.pch will be the pre-compiled header

// stdafx.obj will contain the pre-compiled type information

#include "stdafx.h"

// TODO: reference any additional headers you need in STDAFX.H

// and not in this file

3）demo.h實現代碼：

#ifndef _DEMO_H_

#define _DEMO_H_

// The following ifdef block is the standard way of creating macros which make exporting

// from a DLL simpler. All files within this DLL are compiled with the AE_DEMO_EXPORTS

// symbol defined on the command line. this symbol should not be defined on any project

// that uses this DLL. This way any other project whose source files include this file see

// AE_DEMO_ENTRY functions as being imported from a DLL, wheras this DLL sees symbols

// defined with this macro as being exported.

#ifdef WIN32

#ifdef AE_DEMO_EXPORTS

#define AE_DEMO_ENTRY__declspec(dllexport)

#else

#define AE_DEMO_ENTRY__declspec(dllimport)

#endif

#else

#define AE_DEMO_ENTRY

#endif

// This class is exported from the libdemo.dll

class AE_DEMO_ENTRY CTest

{

public:

CTest();

virtual ~CTest();

public:

int Add(int a,int b);

protected:

int m_nCount;

};

extern AE_DEMO_ENTRY int nTest;

AE_DEMO_ENTRY int fnTest();

#endif // _DEMO_H_

4）demo.cpp實現代碼：

#include "stdafx.h"

#include "demo.h"

// This is an example of an exported variable

AE_DEMO_ENTRY int nTest = 0x64;

// This is an example of an exported function.

AE_DEMO_ENTRY int fnTest()

{

return 64;

}

// This is the constructor of a class that has been exported.

// see demo.h for the class definition

CTest::CTest()

{

}

CTest::~CTest()

{

}

int CTest::Add(int a,int b)

{

return (a + b);

}

當然我們實現的代碼資源已經存在，我們可以直接導入關聯的文件即可：

圖3.6 直接導入資源文件

圖3.7 選擇“File System”

圖3.8 導入相應的資源

圖3.9 編譯工程

我們發現“build console”出現如下錯誤，主要原因是包含路徑問題：

Build Started in Project 'libdemo': 2015-02-07 21:35:56

Generation of makefiles started.

Generation of makefiles finished (Elapsed Time: 00:00).

Platform: Wind River VxWorks 6.6

Command: make --no-print-directory BUILD_SPEC=SIMPENTIUMdiab_RTP DEBUG_MODE=1 TRACE=1

Working Directory: D:/casco800A/fep/code/test_sys/libdemo/SIMPENTIUMdiab_RTP

if [ ! -d "`dirname "libdemo/Debug/Objects/libdemo/src/demo.sho"`" ]; then mkdir -p "`dirname "libdemo/Debug/Objects/libdemo/src/demo.sho"`"; fi;echo "building libdemo/Debug/Objects/libdemo/src/demo.sho"; dplus -g -tX86LH:rtpsim -Xansi -Xforce-declarations -Xmake-dependency=0xd -Xpic -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h/wrn/coreip -D_VX_CPU=_VX_SIMPENTIUM -D_VX_TOOL_FAMILY=diab -D_VX_TOOL=diab -o "libdemo/Debug/Objects/libdemo/src/demo.sho" -c "D:/casco800A/fep/code/test_sys/libdemo/src/demo.cpp"

building libdemo/Debug/Objects/libdemo/src/demo.sho

"D:/casco800A/fep/code/test_sys/libdemo/src/demo.cpp", line 1: catastrophic error (etoa:4005):

could not open source file "stdafx.h"

#include "stdafx.h"

1 catastrophic error detected in the compilation of "D:/casco800A/fep/code/test_sys/libdemo/src/demo.cpp".

Compilation terminated.

C:\WindRiver-GPPVE-3.6-PPC-Eval\workbench-3.0\x86-win32\bin\make.exe: *** [libdemo/Debug/Objects/libdemo/src/demo.sho] Error 1

Build Failed in Project 'libdemo' (Process Exit Value was 2): 2015-02-07 21:35:57 (Elapsed Time: 00:01)

解決方法：

熟悉微軟VS開發環境的人基本都很清楚，怎麼讓自己生成的目標文件和對象拷貝到何方,包括引用的動態庫和引用目錄，這一切都是從project->setting內設置。

1）增加copy功能，我們通常把動態庫與運行程序放在bin目錄下。

echo "copy $@ to $(FEPROOT)/bin"; cp -f "$@" $(FEPROOT)/bin/libdemo.so

也可以這樣寫，讓系統生成默認的文件，其中$@可以不加“”：

echo "copy $@ to $(FEPROOT)/bin"; cp -f $@ $(FEPROOT)/bin

圖3.10 增加copy功能命令

2）增加路徑包含功能，注意相對目錄層次。

圖3.11 增加“inc”目錄，可以寫成“-I$(PRJ_ROOT_DIR/inc”

3）再次編譯即可通過

Build Started in Project 'libdemo': 2015-02-07 21:41:55

Generation of makefiles started.

Generation of makefiles finished (Elapsed Time: 00:00).

Platform: Wind River VxWorks 6.6

Command: make --no-print-directory BUILD_SPEC=SIMPENTIUMdiab_RTP DEBUG_MODE=1 TRACE=1

Working Directory: D:/casco800A/fep/code/test_sys/libdemo/SIMPENTIUMdiab_RTP

if [ ! -d "`dirname "libdemo/Debug/Objects/libdemo/src/demo.sho"`" ]; then mkdir -p "`dirname "libdemo/Debug/Objects/libdemo/src/demo.sho"`"; fi;echo "building libdemo/Debug/Objects/libdemo/src/demo.sho"; dplus -g -tX86LH:rtpsim -Xansi -Xforce-declarations -Xmake-dependency=0xd -Xpic -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h/wrn/coreip -I../inc -D_VX_CPU=_VX_SIMPENTIUM -D_VX_TOOL_FAMILY=diab -D_VX_TOOL=diab -o "libdemo/Debug/Objects/libdemo/src/demo.sho" -c "D:/casco800A/fep/code/test_sys/libdemo/src/demo.cpp"

building libdemo/Debug/Objects/libdemo/src/demo.sho

if [ ! -d "`dirname "libdemo/Debug/Objects/libdemo/src/stdafx.sho"`" ]; then mkdir -p "`dirname "libdemo/Debug/Objects/libdemo/src/stdafx.sho"`"; fi;echo "building libdemo/Debug/Objects/libdemo/src/stdafx.sho"; dplus -g -tX86LH:rtpsim -Xansi -Xforce-declarations -Xmake-dependency=0xd -Xpic -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h/wrn/coreip -I../inc -D_VX_CPU=_VX_SIMPENTIUM -D_VX_TOOL_FAMILY=diab -D_VX_TOOL=diab -o "libdemo/Debug/Objects/libdemo/src/stdafx.sho" -c "D:/casco800A/fep/code/test_sys/libdemo/src/stdafx.cpp"

building libdemo/Debug/Objects/libdemo/src/stdafx.sho

if [ ! -d "`dirname "libdemo/Debug/libdemo.so"`" ]; then mkdir -p "`dirname "libdemo/Debug/libdemo.so"`"; fi;echo "building libdemo/Debug/libdemo.so";SONAME=`basename ""libdemo/Debug/libdemo.so""`;if [ "" != "" ]; then SONAME=$SONAME.;fi; dplus -tX86LH:rtpsim -Xansi -Xforce-declarations -Xmake-dependency=0xd -Xpic -Wl, -Xshared -Wl, -Xdynamic -soname="$SONAME" -o "libdemo/Debug/libdemo.so" libdemo/Debug/Objects/libdemo/src/demo.sho libdemo/Debug/Objects/libdemo/src/stdafx.sho -lstlstd -LC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/lib/simpentium/SIMPENTIUM/common/PIC && if [ "0" = "1" ]; then mv -f "libdemo/Debug/libdemo.so" "libdemo/Debug/libdemo.so.unstripped" && strippentium -g -o "libdemo/Debug/libdemo.so" "libdemo/Debug/libdemo.so.unstripped";fi && if [ "0" = "1" ]; then plink "libdemo/Debug/libdemo.so";fi && if [ "" != "" ]; then cp -f "libdemo/Debug/libdemo.so" "libdemo/Debug/libdemo.so.";fi;echo "copy libdemo/Debug/libdemo.so to d:/casco800A/fep/bin"; cp -f "libdemo/Debug/libdemo.so" d:/casco800A/fep/bin/libdemo.so

building libdemo/Debug/libdemo.so

copy libdemo/Debug/libdemo.so to d:/casco800A/fep/bin

make: built targets of D:/casco800A/fep/code/test_sys/libdemo/SIMPENTIUMdiab_RTP

Build Finished in Project 'libdemo': 2015-02-07 21:41:56 (Elapsed Time: 00:01)

圖3.12 工程生成之後的目錄狀況

4）當然您還可以通過shell直接編譯

圖3.13 shell編譯工程

當然如果你直接修改MakeFile也是可以的，但是我建議你不要這麼費工夫，讓系統按照它自己的規則定義是最好的（我是這麼看的）。因此，只要執行下面的操作，然後再次編譯工程即可。

圖3.14 刪除選擇的文件夾，讓系統重新生成MakeFile

使用圖3.14這種方式，對於剛新建而加入的文件（*.cpp）特別適合。

四、創建RTP測試程序（testdemo）

圖4.1 創建testdemo工程（RTP）

圖4.2 選擇SIMPENTIUMdiab_RTP

圖4.3 選擇Linker編譯工具

圖4.4 新建文件testdemo.cpp

（stdafx.cpp和stdafx.h與上面類似）

// testdemo.cpp : Defines the entry point for the console application.

#include "stdafx.h"

#include "demo.h"

int main(int argc,char* argv[])

{

CTest test;

int nSum = test.Add(1, 2);

printf("a=1,b=2,sum=%d\n", nSum);

printf("nTest=%d\n", nTest);

printf("int fnTest() return %d\n", fnTest());

return 0;

}

項目屬性設置：

1）增加copy功能，我們通常把動態庫與運行程序放在bin目錄下。

echo "copy $@ to $(FEPROOT)/bin"; cp -f "$@" $(FEPROOT)/bin/testdemo.so

也可以寫成這樣：

echo "copy $@ to $(FEPROOT)/bin"; cp -f $@ $(FEPROOT)/bin

圖4.5增加“copy”功能

圖4.6增加“copy”功能

圖4.7 增加libdemo.so動態鏈接庫引用

如果我們不按照圖4.7指定方法添加，那麼你還可以按照下列(圖4.8—圖4.10)設置完成，這樣我們可以把動態鏈接庫和靜態庫統一使用這樣配置：

圖4.8 常規增加libdemo.so動態鏈接庫引用

圖4.9 設置編譯選項:-Xdynmaic

圖4.10選中:Create a dynamic executable

圖4.11 bin目錄下的動態庫與運行程序

五、DEBUG程序

圖5.1 Debug調試環境設置

圖5.2 Debug控制檯輸出內容

輸出的結果:

a=1,b=2,sum=3

nTest=100

int fnTest() return 64

圖5.3 vxsim0控制檯輸出內容

六、創建靜態庫（.a）

上面我們已經實現了動態鏈接庫，並通過測試相應的範例程序。下面準備用兩種方法生成靜態庫：

第1種常見方法：

依據工程嚮導，我們按照前面動態鏈接庫的步驟即可，只要注意下面的設置選項：

圖6.1 創建libdemo1靜態庫(.a)

圖6.2 選擇靜態庫編譯工具

添加上述靜態庫的文件，並編譯工程libdemo1:

Build Started in Project 'libdemo1': 2015-02-10 10:11:42

Generation of makefiles started.

Generation of makefiles finished (Elapsed Time: 00:00).

Platform: Wind River VxWorks 6.6

Command: make --no-print-directory BUILD_SPEC=SIMPENTIUMdiab_RTP DEBUG_MODE=1 TRACE=1 clean all

Working Directory: D:/casco800A/fep/code/test_sys/libdemo1/SIMPENTIUMdiab_RTP

make: removing targets and objects of D:/casco800A/fep/code/test_sys/libdemo1/SIMPENTIUMdiab_RTP

if [ -d "libdemo1" ]; then cd "libdemo1"; rm -rf Debug; fi

if [ ! -d "`dirname "libdemo1/Debug/Objects/libdemo1/src/demo.sho"`" ]; then mkdir -p "`dirname "libdemo1/Debug/Objects/libdemo1/src/demo.sho"`"; fi;echo "building libdemo1/Debug/Objects/libdemo1/src/demo.sho"; dplus -g -tX86LH:rtpsim -Xansi -Xforce-declarations -Xmake-dependency=0xd -Xpic -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h/wrn/coreip -I../inc -D_VX_CPU=_VX_SIMPENTIUM -D_VX_TOOL_FAMILY=diab -D_VX_TOOL=diab -o "libdemo1/Debug/Objects/libdemo1/src/demo.sho" -c "D:/casco800A/fep/code/test_sys/libdemo1/src/demo.cpp"

building libdemo1/Debug/Objects/libdemo1/src/demo.sho

if [ ! -d "`dirname "libdemo1/Debug/Objects/libdemo1/src/stdafx.sho"`" ]; then mkdir -p "`dirname "libdemo1/Debug/Objects/libdemo1/src/stdafx.sho"`"; fi;echo "building libdemo1/Debug/Objects/libdemo1/src/stdafx.sho"; dplus -g -tX86LH:rtpsim -Xansi -Xforce-declarations -Xmake-dependency=0xd -Xpic -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h/wrn/coreip -I../inc -D_VX_CPU=_VX_SIMPENTIUM -D_VX_TOOL_FAMILY=diab -D_VX_TOOL=diab -o "libdemo1/Debug/Objects/libdemo1/src/stdafx.sho" -c "D:/casco800A/fep/code/test_sys/libdemo1/src/stdafx.cpp"

building libdemo1/Debug/Objects/libdemo1/src/stdafx.sho

if [ ! -d "`dirname "libdemo1/Debug/libdemo1.a"`" ]; then mkdir -p "`dirname "libdemo1/Debug/libdemo1.a"`"; fi;echo "building libdemo1/Debug/libdemo1.a"; dar crus "libdemo1/Debug/libdemo1.a" libdemo1/Debug/Objects/libdemo1/src/demo.sho libdemo1/Debug/Objects/libdemo1/src/stdafx.sho ; echo "copy libdemo1/Debug/libdemo1.a to d:/casco800A/fep/lib";cp -f libdemo1/Debug/libdemo1.a d:/casco800A/fep/lib;

building libdemo1/Debug/libdemo1.a

copy libdemo1/Debug/libdemo1.a to d:/casco800A/fep/lib

make: built targets of D:/casco800A/fep/code/test_sys/libdemo1/SIMPENTIUMdiab_RTP

Build Finished in Project 'libdemo1': 2015-02-10 10:11:42 (Elapsed Time: 00:01)

設置testdemo工程配置項：

圖6.3 配置引用的路徑和靜態庫文件

重新編譯testDemo工程：

Build Started in Project 'testdemo': 2015-02-10 10:14:02

Generation of makefiles started.

Generation of makefiles finished (Elapsed Time: 00:00).

Platform: Wind River VxWorks 6.6

Command: make --no-print-directory BUILD_SPEC=SIMPENTIUMdiab_RTP DEBUG_MODE=1 TRACE=1 clean all

Working Directory: D:/casco800A/fep/code/test_sys/testdemo/SIMPENTIUMdiab_RTP

make: removing targets and objects of D:/casco800A/fep/code/test_sys/testdemo/SIMPENTIUMdiab_RTP

if [ -d "testdemo" ]; then cd "testdemo"; rm -rf Debug; fi

if [ ! -d "`dirname "testdemo/Debug/Objects/testdemo/testdemo.o"`" ]; then mkdir -p "`dirname "testdemo/Debug/Objects/testdemo/testdemo.o"`"; fi;echo "building testdemo/Debug/Objects/testdemo/testdemo.o"; dplus -g -tX86LH:rtpsim -Xansi -Xforce-declarations -Xmake-dependency=0xd -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h/wrn/coreip -Id:/casco800A/fep/code/include -D_VX_CPU=_VX_SIMPENTIUM -D_VX_TOOL_FAMILY=diab -D_VX_TOOL=diab -o "testdemo/Debug/Objects/testdemo/testdemo.o" -c "D:/casco800A/fep/code/test_sys/testdemo/testdemo.cpp"

building testdemo/Debug/Objects/testdemo/testdemo.o

if [ ! -d "`dirname "testdemo/Debug/testdemo.vxe"`" ]; then mkdir -p "`dirname "testdemo/Debug/testdemo.vxe"`"; fi;echo "building testdemo/Debug/testdemo.vxe"; dplus -tX86LH:rtpsim -Xansi -Xforce-declarations -Xmake-dependency=0xd -f 0x90,1,1 -o "testdemo/Debug/testdemo.vxe" testdemo/Debug/Objects/testdemo/testdemo.o -L d:/casco800A/fep/lib -lstlstd -ldemo1 -LC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/lib/simpentium/SIMPENTIUM/common && if [ "0" = "1" ]; then mv -f "testdemo/Debug/testdemo.vxe" "testdemo/Debug/testdemo.vxe.unstripped" && strippentium -g -o "testdemo/Debug/testdemo.vxe" "testdemo/Debug/testdemo.vxe.unstripped";fi && if [ "0" = "1" ]; then plink "testdemo/Debug/testdemo.vxe";fi; echo "copy testdemo/Debug/testdemo.vxe to d:/casco800A/fep/bin";cp -f testdemo/Debug/testdemo.vxe d:/casco800A/fep/bin;

building testdemo/Debug/testdemo.vxe

dld: warning: Undefined symbol '__GOTT_BASE__' in file 'demo.sho(d:/casco800A/fep/lib\libdemo1.a)'

dld: warning: Undefined symbol '__GOTT_INDEX__' in file 'demo.sho(d:/casco800A/fep/lib\libdemo1.a)'

dld: error: Undefined symbols found - no output written

copy testdemo/Debug/testdemo.vxe to d:/casco800A/fep/bin

cp: cannot stat `testdemo\\Debug\\testdemo.vxe': No such file or directory

C:\WindRiver-GPPVE-3.6-PPC-Eval\workbench-3.0\x86-win32\bin\make.exe: *** [testdemo/Debug/testdemo.vxe] Error 1

Build Failed in Project 'testdemo' (Process Exit Value was 2): 2015-02-10 10:14:03 (Elapsed Time: 00:01)

爲什麼這樣，網絡上也無語？

圖6.4 C++編譯器中有編譯選項-Xpic

解決方法：

圖6.5 去除C++編譯選項-Xpic

重新編譯libDemo1工程，重新編譯testDemo工程：

Build Started in Project 'testdemo': 2015-02-10 10:27:25

Generation of makefiles started.

Generation of makefiles finished (Elapsed Time: 00:00).

Platform: Wind River VxWorks 6.6

Command: make --no-print-directory BUILD_SPEC=SIMPENTIUMdiab_RTP DEBUG_MODE=1 TRACE=1 clean all

Working Directory: D:/casco800A/fep/code/test_sys/testdemo/SIMPENTIUMdiab_RTP

make: removing targets and objects of D:/casco800A/fep/code/test_sys/testdemo/SIMPENTIUMdiab_RTP

if [ -d "testdemo" ]; then cd "testdemo"; rm -rf Debug; fi

building testdemo/Debug/Objects/testdemo/testdemo.o

building testdemo/Debug/testdemo.vxe

copy testdemo/Debug/testdemo.vxe to d:/casco800A/fep/bin

make: built targets of D:/casco800A/fep/code/test_sys/testdemo/SIMPENTIUMdiab_RTP

Build Finished in Project 'testdemo': 2015-02-10 10:27:25 (Elapsed Time: 00:01)

編譯通過，調試testDemo:

圖6.6 測試結果

關於PIC補充一點說明：

縮寫pic代表位置獨立代碼（position independent code）。

-Xpic：表示編譯爲位置獨立的代碼，不用此選項的話編譯後的代碼，是位置相關的。所以動態載入時是通過代碼拷貝的方式來滿足不同進程的需要，而不能達到真正代碼段共享的目的。–shared：指明編譯成動態庫。

選項-Xpic表示輸出的對象模塊式按照可重定位地址（relocatable addressing）方式生成的。

第2種特殊方法：

這一種方法主要使用Real Time Process工程創建靜態庫，請注意下面的選項。

圖6.7 創建libdemo2靜態庫

圖6.8 選擇靜態庫項

包含路徑與libdemo一樣即可，導入inc和src相關文件，再次編譯libedem2:

Build Started in Project 'libdemo2': 2015-02-10 11:08:58

Generation of makefiles started.

Generation of makefiles finished (Elapsed Time: 00:00).

Platform: Wind River VxWorks 6.6

Command: make --no-print-directory BUILD_SPEC=SIMPENTIUMdiab_RTP DEBUG_MODE=1 TRACE=1 clean all

Working Directory: D:/casco800A/fep/code/test_sys/libdemo2/SIMPENTIUMdiab_RTP

make: removing targets and objects of D:/casco800A/fep/code/test_sys/libdemo2/SIMPENTIUMdiab_RTP

if [ -d "libdemo2" ]; then cd "libdemo2"; rm -rf Debug; fi

if [ ! -d "`dirname "libdemo2/Debug/Objects/libdemo2/src/demo.o"`" ]; then mkdir -p "`dirname "libdemo2/Debug/Objects/libdemo2/src/demo.o"`"; fi;echo "building libdemo2/Debug/Objects/libdemo2/src/demo.o"; dplus -g -tX86LH:rtpsim -Xansi -Xforce-declarations -Xmake-dependency=0xd -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h/wrn/coreip -I../inc -D_VX_CPU=_VX_SIMPENTIUM -D_VX_TOOL_FAMILY=diab -D_VX_TOOL=diab -o "libdemo2/Debug/Objects/libdemo2/src/demo.o" -c "D:/casco800A/fep/code/test_sys/libdemo2/src/demo.cpp"

building libdemo2/Debug/Objects/libdemo2/src/demo.o

if [ ! -d "`dirname "libdemo2/Debug/Objects/libdemo2/src/stdafx.o"`" ]; then mkdir -p "`dirname "libdemo2/Debug/Objects/libdemo2/src/stdafx.o"`"; fi;echo "building libdemo2/Debug/Objects/libdemo2/src/stdafx.o"; dplus -g -tX86LH:rtpsim -Xansi -Xforce-declarations -Xmake-dependency=0xd -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h -IC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/h/wrn/coreip -I../inc -D_VX_CPU=_VX_SIMPENTIUM -D_VX_TOOL_FAMILY=diab -D_VX_TOOL=diab -o "libdemo2/Debug/Objects/libdemo2/src/stdafx.o" -c "D:/casco800A/fep/code/test_sys/libdemo2/src/stdafx.cpp"

building libdemo2/Debug/Objects/libdemo2/src/stdafx.o

if [ ! -d "`dirname "libdemo2/Debug/libdemo2.a"`" ]; then mkdir -p "`dirname "libdemo2/Debug/libdemo2.a"`"; fi;echo "building libdemo2/Debug/libdemo2.a"; dar crus "libdemo2/Debug/libdemo2.a" libdemo2/Debug/Objects/libdemo2/src/demo.o libdemo2/Debug/Objects/libdemo2/src/stdafx.o ; echo "copy libdemo2/Debug/libdemo2.a to d:/casco800A/fep/lib";cp -f libdemo2/Debug/libdemo2.a d:/casco800A/fep/lib;

building libdemo2/Debug/libdemo2.a

copy libdemo2/Debug/libdemo2.a to d:/casco800A/fep/lib

make: built targets of D:/casco800A/fep/code/test_sys/libdemo2/SIMPENTIUMdiab_RTP

Build Finished in Project 'libdemo2': 2015-02-10 11:08:58 (Elapsed Time: 00:01)

再次設置testDemo工程：

圖6.9 靜態庫路徑引用項和libdemo2文件

再次編譯testDemo工程：

Build Started in Project 'testdemo': 2015-02-10 11:13:16

Generation of makefiles started.

Generation of makefiles finished (Elapsed Time: 00:00).

Platform: Wind River VxWorks 6.6

Command: make --no-print-directory BUILD_SPEC=SIMPENTIUMdiab_RTP DEBUG_MODE=1 TRACE=1 clean all

Working Directory: D:/casco800A/fep/code/test_sys/testdemo/SIMPENTIUMdiab_RTP

make: removing targets and objects of D:/casco800A/fep/code/test_sys/testdemo/SIMPENTIUMdiab_RTP

if [ -d "testdemo" ]; then cd "testdemo"; rm -rf Debug; fi

building testdemo/Debug/Objects/testdemo/testdemo.o

if [ ! -d "`dirname "testdemo/Debug/testdemo.vxe"`" ]; then mkdir -p "`dirname "testdemo/Debug/testdemo.vxe"`"; fi;echo "building testdemo/Debug/testdemo.vxe"; dplus -tX86LH:rtpsim -Xansi -Xforce-declarations -Xmake-dependency=0xd -f 0x90,1,1 -o "testdemo/Debug/testdemo.vxe" testdemo/Debug/Objects/testdemo/testdemo.o -L d:/casco800A/fep/lib -lstlstd -ldemo2 -LC:/WindRiver-GPPVE-3.6-PPC-Eval/vxworks-6.6/target/usr/lib/simpentium/SIMPENTIUM/common && if [ "0" = "1" ]; then mv -f "testdemo/Debug/testdemo.vxe" "testdemo/Debug/testdemo.vxe.unstripped" && strippentium -g -o "testdemo/Debug/testdemo.vxe" "testdemo/Debug/testdemo.vxe.unstripped";fi && if [ "0" = "1" ]; then plink "testdemo/Debug/testdemo.vxe";fi; echo "copy testdemo/Debug/testdemo.vxe to d:/casco800A/fep/bin";cp -f testdemo/Debug/testdemo.vxe d:/casco800A/fep/bin;

building testdemo/Debug/testdemo.vxe

copy testdemo/Debug/testdemo.vxe to d:/casco800A/fep/bin

make: built targets of D:/casco800A/fep/code/test_sys/testdemo/SIMPENTIUMdiab_RTP

Build Finished in Project 'testdemo': 2015-02-10 11:13:17 (Elapsed Time: 00:01)

測試結果：