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1>dcmdata.lib(vrscan.obj) : error LNK2001: 无法解析的外部符号 "public: bool __thiscall log4cplus::Logger::isEnabledFor(int)const " (?isEnabledFor@Logger@log4cplus@@QBE_NH@Z)
1>dcmdata.lib(dcpixseq.obj) : error LNK2001: 无法解析的外部符号 "public: bool __thiscall log4cplus::Logger::isEnabledFor(int)const " (?isEnabledFor@Logger@log4cplus@@QBE_NH@Z)
1>dcmdata.lib(dcpxitem.obj) : error LNK2019: 无法解析的外部符号 "public: bool __thiscall log4cplus::Logger::isEnabledFor(int)const " (?isEnabledFor@Logger@log4cplus@@QBE_NH@Z),该符号在函数 "public: log4cplus::Logger::isEnabledFor(int)const " (?isEnabledFor@Logger@log4cplus@@QBE_NH@Z)
1>dcmimgle.lib(diluptab.obj) : error LNK2001: 无法解析的外部符号 "public: bool __thiscall log4cplus::Logger::isEnabledFor(int)const " (?isEnabledFor@Logger@log4cplus@@QBE_NH@Z)
1>dcmimgle.lib(dcmimage.obj) : error LNK2001: 无法解析的外部符号 "public: bool __thiscall log4cplus::Logger::isEnabledFor(int)const " (?isEnabledFor@Logger@log4cplus@@QBE_NH@Z)
1>dcmimgle.lib(dimoimg.obj) : error LNK2001: 无法解析的外部符号 "public: bool __thiscall log4cplus::Logger::isEnabledFor(int)const " (?isEnabledFor@Logger@log4cplus@@QBE_NH@Z)
1>dcmimgle.lib(didocu.obj) : error LNK2001: 无法解析的外部符号 "public: bool __thiscall log4cplus::Logger::isEnabledFor(int)const " (?isEnabledFor@Logger@log4cplus@@QBE_NH@Z)
1>dcmimgle.lib(diutils.obj) : error LNK2001: 无法解析的外部符号 "public: bool __thiscall log4cplus::Logger::isEnabledFor(int)const " (?isEnabledFor@Logger@log4cplus@@QBE_NH@Z)
1>dcmdata.lib(vrscan.obj) : error LNK2001: 无法解析的外部符号 "public: void __thiscall log4cplus::Logger::forcedLog(int,class OFString const &,char const *,int,char const *)const " (?forcedLog@Logger@log4cplus@@QBEXHABVOFString@@PBDH1@Z)
1>dcmdata.lib(dcpixseq.obj) : error LNK2001: 无法解析的外部符号 "public: void __thiscall log4cplus::Logger::forcedLog(int,class OFString const &,char const *,int,char const *)const " (?forcedLog@Logger@log4cplus@@QBEXHABVOFString@@PBDH1@Z)
1>dcmdata.lib(dcpxitem.obj) : error LNK2001: 无法解析的外部符号 "public: void __thiscall log4cplus::Logger::forcedLog(int,class OFString const &,char const *,int,char const *)const " (?forcedLog@Logger@log4cplus@@QBEXHABVOFString@@PBDH1@Z)
1>dcmdata.lib(dcdirrec.obj) : error LNK2001: 无法解析的外部符号 "public: void __thiscall log4cplus::Logger::forcedLog(int,class OFString const &,char const *,int,char const *)const " (?forcedLog@Logger@log4cplus@@QBEXHABVOFString@@PBDH1@Z)
1>dcmdata.lib(dcbytstr.obj) : error LNK2001: 无法解析的外部符号 "public: void __thiscall log4cplus::Logger::forcedLog(int,class OFString const &,char const *,int,char const *)const " (?forcedLog@Logger@log4cplus@@QBEXHABVOFString@@PBDH1@Z)
1>dcmdata.lib(dcsequen.obj) : error LNK2001: 无法解析的外部符号 "public: void __thiscall log4cplus::Logger::forcedLog(int,class OFString const &,char const *,int,char const *)const " (?forcedLog@Logger@log4cplus@@QBEXHABVOFString@@PBDH1@Z)
1>dcmdata.lib(dcelem.obj) : error LNK2001: 无法解析的外部符号 "public: void __thiscall log4cplus::Logger::forcedLog(int,class OFString const &,char const *,int,char const *)const " (?forcedLog@Logger@log4cplus@@QBEXHABVOFString@@PBDH1@Z)
1>dcmdata.lib(dcostrmf.obj) : error LNK2001: 无法解析的外部符号 "public: void __thiscall log4cplus::Logger::forcedLog(int,class OFString const &,char const *,int,char const *)const " (?forcedLog@Logger@log4cplus@@QBEXHABVOFString@@PBDH1@Z)
.........
........
1>dcmdata.lib(dcmetinf.obj) : error LNK2019: 无法解析的外部符号 "public: void __thiscall log4cplus::Logger::forcedLog(int,class OFString const &,char const *,int,char const *)const " (?forcedLog@Logger@log4cplus@@QBEXHABVOFString@@PBDH1@Z),该符号在函数 "public: class DcmMetaInfo & __thiscall DcmMetaInfo::operator=(class DcmMetaInfo const &)" (??4DcmMetaInfo@@QAEAAV0@ABV0@@Z) 中被引用
1>dcmdata.lib(dcvr.obj) : error LNK2001: 无法解析的外部符号 "public: void __thiscall log4cplus::Logger::forcedLog(int,class OFString const &,char const *,int,char const *)const " (?forcedLog@Logger@log4cplus@@QBEXHABVOFString@@PBDH1@Z)
1>dcmdata.lib(dcuid.obj) : error LNK2001: 无法解析的外部符号 "public: void __thiscall log4cplus::Logger::forcedLog(int,class OFString const &,char const *,int,char const *)const " (?forcedLog@Logger@log4cplus@@QBEXHABVOFString@@PBDH1@Z)
1>dcmdata.lib(dcobject.obj) : error LNK2001: 无法解析的外部符号 "public: void __thiscall log4cplus::Logger::forcedLog(int,class OFString const &,char const *,int,char const *)const " (?forcedLog@Logger@log4cplus@@QBEXHABVOFString@@PBDH1@Z)
1>dcmdata.lib(dcvrobow.obj) : error LNK2001: 无法解析的外部符号 "public: void __thiscall log4cplus::Logger::forcedLog(int,class OFString const &,char const *,int,char const *)const " (?forcedLog@Logger@log4cplus@@QBEXHABVOFString@@PBDH1@Z)
1>dcmdata.lib(dcvr.obj) : error LNK2001: 无法解析的外部符号 "public: virtual __thiscall log4cplus::Logger::~Logger(void)" (??1Logger@log4cplus@@UAE@XZ)
1>dcmimgle.lib(diutils.obj) : error LNK2001: 无法解析的外部符号 "public: virtual void __thiscall log4cplus::Logger::removeAppender(class log4cplus::helpers::SharedObjectPtr<class log4cplus::Appender>)" (?removeAppender@Logger@log4cplus@@UAEXV?$SharedObjectPtr@VAppender@log4cplus@@@helpers@2@@Z)
1>dcmdata.lib(dctypes.obj) : error LNK2001: 无法解析的外部符号 "public: virtual void __thiscall log4cplus::Logger::removeAppender(class log4cplus::helpers::SharedObjectPtr<class log4cplus::Appender>)" (?removeAppender@Logger@log4cplus@@UAEXV?$SharedObjectPtr@VAppender@log4cplus@@@helpers@2@@Z)
1>D:\创造与梦想\我的C++\练习程序\DCMTK_Demo\Debug\DCMTK_Demo.exe : fatal error LNK1120: 11 个无法解析的外部命令
1>dcmdata.lib(vrscan.obj)
^^^^^^^^^^^^^^^^^^^^^^^^^^说明是dcmdata.lib中的vrscan.obj有问题
error LNK2001: 无法解析的外部符号
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^问题是符号无法解析
"public: bool __thiscall log4cplus::Logger::isEnabledFor(int)const "
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^符号的可读信息.可以看出是什么类什么函数等等
(?isEnabledFor@Logger@log4cplus@@QBE_NH@Z)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^c++ name mangling后的符号名,也就是符号在目标文件中的真实名称
错误信息一目了然啊
连接时错误一般都很好办.比模板出错强多了.#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef WIN32
#include <windows.h>
#include <io.h>
#else
#include <unistd.h>
#include <sys/time.h>
#include <pthread.h>
#define CRITICAL_SECTION pthread_mutex_t
#define _vsnprintf vsnprintf
#endif
//Log{
#define MAXLOGSIZE 20000000
#define ARRSIZE(x) (sizeof(x)/sizeof(x[0]))
#include <time.h>
#include <sys/timeb.h>
#include <stdarg.h>
char logfilename1[]="MyLog1.log";
char logfilename2[]="MyLog2.log";
char logstr[16000];
char datestr[16];
char timestr[16];
char mss[4];
CRITICAL_SECTION cs_log;
FILE *flog;
#ifdef WIN32
void Lock(CRITICAL_SECTION *l) {
EnterCriticalSection(l);
}
void Unlock(CRITICAL_SECTION *l) {
LeaveCriticalSection(l);
}
#else
void Lock(CRITICAL_SECTION *l) {
pthread_mutex_lock(l);
}
void Unlock(CRITICAL_SECTION *l) {
pthread_mutex_unlock(l);
}
#endif
void LogV(const char *pszFmt,va_list argp) {
struct tm *now;
struct timeb tb;
if (NULL==pszFmt||0==pszFmt[0]) return;
if (-1==_vsnprintf(logstr,ARRSIZE(logstr),pszFmt,argp)) logstr[ARRSIZE(logstr)-1]=0;
ftime(&tb);
now=localtime(&tb.time);
sprintf(datestr,"%04d-%02d-%02d",now->tm_year+1900,now->tm_mon+1,now->tm_mday);
sprintf(timestr,"%02d:%02d:%02d",now->tm_hour ,now->tm_min ,now->tm_sec );
sprintf(mss,"%03d",tb.millitm);
printf("%s %s.%s %s",datestr,timestr,mss,logstr);
flog=fopen(logfilename1,"a");
if (NULL!=flog) {
fprintf(flog,"%s %s.%s %s",datestr,timestr,mss,logstr);
if (ftell(flog)>MAXLOGSIZE) {
fclose(flog);
if (rename(logfilename1,logfilename2)) {
remove(logfilename2);
rename(logfilename1,logfilename2);
}
flog=fopen(logfilename1,"a");
if (NULL==flog) return;
}
fclose(flog);
}
}
void Log(const char *pszFmt,...) {
va_list argp;
Lock(&cs_log);
va_start(argp,pszFmt);
LogV(pszFmt,argp);
va_end(argp);
Unlock(&cs_log);
}
//Log}
int main(int argc,char * argv[]) {
int i;
#ifdef WIN32
InitializeCriticalSection(&cs_log);
#else
pthread_mutex_init(&cs_log,NULL);
#endif
for (i=0;i<10000;i++) {
Log("This is a Log %04d from FILE:%s LINE:%d\n",i, __FILE__, __LINE__);
}
#ifdef WIN32
DeleteCriticalSection(&cs_log);
#else
pthread_mutex_destroy(&cs_log);
#endif
return 0;
}