对"_imp__InitBizLib"的未定义引用 [英] undefined reference to ‘_imp__InitBizLib’
问题描述
尝试在XP上使用通过eclipse编写的C ++程序使用第三方SDK时出现上述错误.根据搜索，我知道此错误是由链接器未正确指向.dll或.lib引起的.我在环境变量-PATH中以及在Eclipse中的Properties \ C/C ++ Build \ Settings \ MinGW C ++ Linker \ Libraries下都包含了这些项目的路径.这两个项目使用的路径是C:\ Program Files \ Card Scanning Solutions \ SDK
I am getting the error above when trying to use a 3rd party SDK with a C++ program written using eclipse on XP. Based on searches I understand that this error is caused by the linker not correctly pointing to the .dll or .lib. I have included the path to these items in the Environmental Variable - PATH, and also in eclipse under Properties\C/C++ Build\Settings\MinGW C++ Linker\Libraries. The path used for both of these items is C:\Program Files\Card Scanning Solutions\SDK
这是控制台输出:
**** Build of configuration Debug for project HelloWorld ****
**** Internal Builder is used for build ****
g++ -IC:\Program Files\Card Scanning Solutions\SDK -O0 -g3 -Wall -c -fmessage-length=0 -lm -v -o src\BizScan.o ..\src\BizScan.cpp
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=c:/mingw/bin/../libexec/gcc/mingw32/4.6.1/lto-wrapper.exe
Target: mingw32
Configured with: ../gcc-4.6.1/configure --enable-languages=c,c++,fortran,objc,obj-c++ --disable-sjlj-exceptions --with-dwarf2 --enable-shared --enable-libgomp --disable-win32-registry --enable-libstdcxx-debug --enable-version-specific-runtime-libs --build=mingw32 --prefix=/mingw
Thread model: win32
gcc version 4.6.1 (GCC)
COLLECT_GCC_OPTIONS='-I' 'C:\Program Files\Card Scanning Solutions\SDK' '-O0' '-g3' '-Wall' '-c' '-fmessage-length=0' '-v' '-o' 'src\BizScan.o' '-shared-libgcc' '-mtune=i386' '-march=i386'
c:/mingw/bin/../libexec/gcc/mingw32/4.6.1/cc1plus.exe -quiet -v -I C:\Program Files\Card Scanning Solutions\SDK -iprefix c:\mingw\bin\../lib/gcc/mingw32/4.6.1/ -dD ..\src\BizScan.cpp -quiet -dumpbase BizScan.cpp -mtune=i386 -march=i386 -auxbase-strip src\BizScan.o -g3 -O0 -Wall -version -fmessage-length=0 -o C:\DOCUME~1\Game\LOCALS~1\Temp\ccwufpbm.s
GNU C++ (GCC) version 4.6.1 (mingw32)
compiled by GNU C version 4.6.1, GMP version 5.0.1, MPFR version 2.4.1, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=65307
ignoring nonexistent directory "c:\mingw\bin\../lib/gcc/mingw32/4.6.1/../../../../mingw32/include"
ignoring duplicate directory "c:/mingw/lib/gcc/../../lib/gcc/mingw32/4.6.1/include/c++"
ignoring duplicate directory "c:/mingw/lib/gcc/../../lib/gcc/mingw32/4.6.1/include/c++/mingw32"
ignoring duplicate directory "c:/mingw/lib/gcc/../../lib/gcc/mingw32/4.6.1/include/c++/backward"
ignoring duplicate directory "c:/mingw/lib/gcc/../../lib/gcc/mingw32/4.6.1/include"
ignoring duplicate directory "/mingw/lib/gcc/mingw32/4.6.1/../../../../include"
ignoring duplicate directory "c:/mingw/lib/gcc/../../include"
ignoring duplicate directory "c:/mingw/lib/gcc/../../lib/gcc/mingw32/4.6.1/include-fixed"
ignoring nonexistent directory "c:/mingw/lib/gcc/../../lib/gcc/mingw32/4.6.1/../../../../mingw32/include"
ignoring duplicate directory "/mingw/include"
#include "..." search starts here:
#include <...> search starts here:
C:\Program Files\Card Scanning Solutions\SDK
c:\mingw\bin\../lib/gcc/mingw32/4.6.1/include/c++
c:\mingw\bin\../lib/gcc/mingw32/4.6.1/include/c++/mingw32
c:\mingw\bin\../lib/gcc/mingw32/4.6.1/include/c++/backward
c:\mingw\bin\../lib/gcc/mingw32/4.6.1/include
c:\mingw\bin\../lib/gcc/mingw32/4.6.1/../../../../include
c:\mingw\bin\../lib/gcc/mingw32/4.6.1/include-fixed
End of search list.
GNU C++ (GCC) version 4.6.1 (mingw32)
compiled by GNU C version 4.6.1, GMP version 5.0.1, MPFR version 2.4.1, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=65307
Compiler executable checksum: 8e56a7b4b7f3db333ff95dd4b2d788a4
COLLECT_GCC_OPTIONS='-I' 'C:\Program Files\Card Scanning Solutions\SDK' '-O0' '-g3' '-Wall' '-c' '-fmessage-length=0' '-v' '-o' 'src\BizScan.o' '-shared-libgcc' '-mtune=i386' '-march=i386'
c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../../mingw32/bin/as.exe -o src\BizScan.o C:\DOCUME~1\Game\LOCALS~1\Temp\ccwufpbm.s
COMPILER_PATH=c:/mingw/bin/../libexec/gcc/mingw32/4.6.1/;c:/mingw/bin/../libexec/gcc/;c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../../mingw32/bin/
LIBRARY_PATH=c:/mingw/bin/../lib/gcc/mingw32/4.6.1/;c:/mingw/bin/../lib/gcc/;c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../../mingw32/lib/;c:/mingw/bin/../lib/gcc/mingw32/4.6.1/../../../;/mingw/lib/
COLLECT_GCC_OPTIONS='-I' 'C:\Program Files\Card Scanning Solutions\SDK' '-O0' '-g3' '-Wall' '-c' '-fmessage-length=0' '-v' '-o' 'src\BizScan.o' '-shared-libgcc' '-mtune=i386' '-march=i386'
g++ -LC:\Program Files\Card Scanning Solutions\SDK -lm -o HelloWorld.exe src\HelloWorld.o src\BizScan.o
src\BizScan.o: In function `ZN7BizScan4InitEv':
C:\Documents and Settings\Game\workspace\HelloWorld\Debug/../src/BizScan.cpp:20: undefined reference to `_imp__UseFixedModel'
C:\Documents and Settings\Game\workspace\HelloWorld\Debug/../src/BizScan.cpp:22: undefined reference to `_imp__SetTwainScanner'
C:\Documents and Settings\Game\workspace\HelloWorld\Debug/../src/BizScan.cpp:23: undefined reference to `_imp__InitScanLib'
C:\Documents and Settings\Game\workspace\HelloWorld\Debug/../src/BizScan.cpp:27: undefined reference to `_imp__InitImageLib'
C:\Documents and Settings\Game\workspace\HelloWorld\Debug/../src/BizScan.cpp:31: undefined reference to `_imp__InitBizLib'
src\BizScan.o: In function `~BizScan':
C:\Documents and Settings\Game\workspace\HelloWorld\Debug/../src/BizScan.cpp:39: undefined reference to `_imp__UnInitScanLib'
collect2: ld returned 1 exit status
Build error occurred, build is stopped
Time consumed: 5648 ms.
这是BizScan.cpp:
Here is BizScan.cpp:
/*
* BizScan.cpp
*
* Created on: Feb 13, 2012
* Author: TFB
*/
#include "BizScan.h"
#include "slibexp.h" // ScanLib SDK header file
#include "..\header_lib\BizExp.h" // ScanLib SDK header file
#include "..\header_lib\ImageExp.h" // ScanLib SDK header file
#include "CSSN.h"
#include "windef.h"
BizScan::BizScan() {
BizScan::Init();
}
const char* BizScan::Init() {
UseFixedModel(11);
const char *scannerSelected = "WIA-A6 Scanner 735";
int result = SetTwainScanner(scannerSelected);
result = InitScanLib(CSSN::GetSDKLicense().c_str());
if(result < 0 && result != -13){
return ScannerErrors(result);
} else {
result = InitImageLib(CSSN::GetSDKLicense().c_str());//initialize Image Lib SDK
if(result < 0 && result != -13)//if error
return ImageErrors(result);//call image lib sdk
result = InitBizLib(CSSN::GetSDKLicense().c_str());//initialize Biz Card Lib Scanner SDK
if(result < 0 && result != -13)//if error
return BizErrors(result);//call biz card scanner Lib SDK error handler
}
return "Successful Initialization !!";
}
BizScan::~BizScan() {
UnInitScanLib();
}
这是BizScan.h:
Here is BizScan.h:
/*
* BizScan.h
*
* Created on: Feb 13, 2012
* Author: TFB
*/
#ifndef BIZSCAN_H_
#define BIZSCAN_H_
#include "windef.h"
typedef HINSTANCE hDLL;
class BizScan {
private:
public:
BizScan();
virtual ~BizScan();
const char* Init() ;
};
#endif /* BIZSCAN_H_ */
这是slibexp.h的相关部分:
And here is the relevant part of slibexp.h:
/*/////////////////////////////////////////////////////////////////////
//
// SLibExp.h
//
// Card Scanning Solutions (LLC)
// All Rights Reserved
//
/////////////////////////////////////////////////////////////////////*/
#ifndef SLIBEXP_H
#define SLIBEXP_H
#ifdef SDLL
#define SDLL_EXP __declspec( dllexport )
#else
#define SDLL_EXP __declspec( dllimport )
#endif
// Functions Prototypes
#if defined __cplusplus || defined c_plusplus
extern "C"
{
#endif
SDLL_EXP void UseFixedModel(int val);
SDLL_EXP short SetTwainScanner(const char *szStr);
SDLL_EXP short InitScanLib(const char * license);
IMAGE_EXPORT short InitImageLib(const char *licanse);
SDLL_EXP short UnInitScanLib();
#if defined __cplusplus || defined c_plusplus
};
#endif
#endif /* SLIBEXP_H */
在控制台输出中引用的其他两种方法都在同一文件夹(项目根目录)中的其他头文件中定义.这些定义如下:
The other two methods, referenced in the console output both are defined in other header files that are in the same folder (the project root directory). These are defined as follows:
IMAGE_EXPORT short InitImageLib(const char *licanse);
extern "C" BIZ_EXPORT short InitBizLib(const char *license);
还有另一个地方需要链接这些.dll文件.我尝试使用LoadLibrary()方法，但是由于该方法不属于范围，因此该方法被拒绝.我应该如何链接到这些dll?谢谢您提供的任何指导.
Is there another place I need to link these .dll's. I have tried using the LoadLibrary() method, but that method gets rejected for not being part of the scope. How should I link to these dll's? Thank you for any direction you may offer.
推荐答案
查看显示的输出，这是相关的命令:
Looking at the output you show, this is the relevant command:
g++ -LC:\Program Files\Card Scanning Solutions\SDK -lm -o HelloWorld.exe src\HelloWorld.o src\BizScan.o
它包括库的路径，但实际库本身没有引用.我不知道该库的名称是什么，但让我们假设它是 libBizLib.a ，该命令的末尾应该有 -lBizLib ；或者，如果要链接到dll，则可以使用其全名(不带 -l </code>).
It includes the path to the library, but there is no reference ro the actual library itself. I don't know what the name of the library is, but let's assume it's libBizLib.a, there should be -lBizLib at the end of that command; or if you want to link against the dll, you can use its full name (without -l).
(顺便说一句，您提到了库的.lib扩展名.这通常表示一个Visual Studio库.您确定拥有的版本与MinGW兼容吗?)
(By the way, you mention a .lib extension of the library. That usually indicates a Visual Studio library. Are you sure the version you have, is compatible with MinGW?)
这篇关于对"_imp__InitBizLib"的未定义引用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
