uly*_*sis 6 c reference undefined
我是一个不熟练的程序员,也是Linux的新手,我在编译时遇到了问题.我在同一文件夹中有两个文件'ex_addinst.c'和'lindo.h',我输入命令:
g++ -c ex_addinst.c
然后,一个目标文件ex_addinst.o被发出警告:
ex_addinst.c: In function ‘int main()’:
ex_addinst.c:80: warning: deprecated conversion from string constant to ‘char*’
然后我把它们泄漏了
g++ -Wall -o ex_addinst ex_addinst.o
并获得以下信息:
ex_addinst.o: In function `main':
ex_addinst.c:(.text+0x2b): undefined reference to `LSloadLicenseString'
ex_addinst.c:(.text+0x75): undefined reference to `LSgetVersionInfo'
ex_addinst.c:(.text+0xae): undefined reference to `LScreateEnv'
ex_addinst.c:(.text+0x10a): undefined reference to `LSgetErrorMessage'
...
...
ex_addinst.c:(.text+0x1163): undefined reference to `LSdeleteEnv'
collect2: ld returned 1 exit status
我想头文件'lindo.h'没有编译到.o文件中,但我不知道现在要做什么.我尝试过gcc,但得到同样的错误.我的g ++和gcc的版本是4.4.5.我正在使用Ubuntu 10.10.
所有的功能和结构都在'lindo.h'中声明.
ex_addinst.c的一部分如下:
#include <stdio.h>
#include <stdlib.h>
/* LINDO API header file */
#include "lindo.h"
enter code here
int CALLTYPE LSwriteMPIFile(pLSmodel pModel,
char *pszFname);
/* Define a macro to declare variables for
error checking */
#define APIERRORSETUP \
int nErrorCode; \
char cErrorMessage[LS_MAX_ERROR_MESSAGE_LENGTH] \
/* Define a macro to do our error checking */
#define APIERRORCHECK \
if (nErrorCode) \
{ \
if ( pEnv) \
{ \
LSgetErrorMessage( pEnv, nErrorCode, \
cErrorMessage); \
printf("nErrorCode=%d: %s\n", nErrorCode, \
cErrorMessage); \
} else {\
printf( "Fatal Error\n"); \
} \
exit(1); \
} \
#define APIVERSION \
{\
char szVersion[255], szBuild[255];\
LSgetVersionInfo(szVersion,szBuild);\
printf("\nLINDO API Version %s built on %s\n",szVersion,szBuild);\
}\
/* main entry point */
int main()
{
APIERRORSETUP;
pLSenv pEnv;
pLSmodel pModel;
char MY_LICENSE_KEY[1024];
/*****************************************************************
* Step 1: Create a model in the environment.
*****************************************************************/
nErrorCode = LSloadLicenseString("home/li/work/tools/lindo/lindoapi/license/lndapi60.lic", MY_LICENSE_KEY);
if ( nErrorCode != LSERR_NO_ERROR)
{
printf( "Failed to load license key (error %d)\n",nErrorCode);
exit( 1);
}
......
......
......
APIERRORCHECK;
{
int nStatus;
double objval=0.0, primal[100];
/* Get the optimization result */
nErrorCode = LSgetInfo(pModel, LS_DINFO_GOP_OBJ, &objval);
APIERRORCHECK;
LSgetMIPPrimalSolution( pModel, primal) ;
APIERRORCHECK;
printf("\n\nObjective = %f \n",objval);
printf("x[0] = %f \n",primal[0]);
printf("x[1] = %f \n",primal[1]);
/* Get the linearity of the solved model */
nErrorCode = LSgetInfo (pModel, LS_IINFO_GOP_STATUS, &nStatus);
APIERRORCHECK;
/* Report the status of solution */
if (nStatus==LS_STATUS_OPTIMAL || nStatus==LS_STATUS_BASIC_OPTIMAL)
printf("\nSolution Status: Globally Optimal\n");
else if (nStatus==LS_STATUS_LOCAL_OPTIMAL)
printf("\nSolution Status: Locally Optimal\n\n");
else if (nStatus==LS_STATUS_INFEASIBLE)
printf("\nSolution Status: Infeasible\n\n");
}
/* >>> Step 7 <<< Delete the LINDO environment */
LSdeleteEnv(&pEnv);
/* Wait until user presses the Enter key */
printf("Press <Enter> ...");
getchar();
}
'lindo.h'的一部分是:
/*********************************************************************
* Structure Creation and Deletion Routines (4) *
*********************************************************************/
pLSenv CALLTYPE LScreateEnv(int *pnErrorcode,
char *pszPassword);
pLSmodel CALLTYPE LScreateModel(pLSenv pEnv,
int *pnErrorcode);
int CALLTYPE LSdeleteEnv(pLSenv *pEnv);
int CALLTYPE LSdeleteModel(pLSmodel *pModel);
int CALLTYPE LSloadLicenseString(char *pszFname, char *pachLicense);
void CALLTYPE LSgetVersionInfo(char *pachVernum, char *pachBuildDate);
谢谢!
谢谢你们回答我的问题.正如你的建议,我需要在编译时链接库.我已经获得了可执行文件:
gcc -o ex_addinst ./ex_addinst.o -L/home/li/work/tools/lindo/lindoapi/bin/linux64 -m64 -llindo64 -lmosek64 -lconsub3 -lc -ldl -lm -lguide -lpthread -lsvml -limf -lirc
但运行可执行文件ex_addinst时出现另一个问题:运行后:
./ex_addinst
有来:
./ex_addinst: error while loading shared libraries: liblindo64.so.6.0: cannot open shared object file: No such file or directory
棘手的是,liblindo64.so.6.0位于lib文件夹中,其中包含:
libconsub3.so libirc.so liblindojni.so libmosek64.so.5.0 lindo.par
libguide.so liblindo64.so liblindojni.so.6.0.3 libsvml.so placeholder
libimf.so liblindo64.so.6.0 libmosek64.so lindoapivars.sh runlindo
我创建之间的符号链接liblindo64.so.6.0和liblindo64.so与
ln -sf liblindo64.so.6.0 liblindo64.so
但它没有帮助.
谁能告诉我这里有什么问题？
(我不确定我是否应该把这个问题放在一个新帖子中,但我认为现在最好跟随旧帖子)