这个编译错误是什么原因呢？

alizh

g++ -g -o -D_POXIX_C_SOURCE -D__UNIX__   ../../../../cpp/offline/silent/exportcsu/export.o
../../../../cpp/offline/silent/Object.o ../../../../cpp/offline/silent/String.o ../../../
../cpp/offline/silent/DateTime.o ../../../../cpp/offline/silent/Exception.o ../../../../cp
p/offline/silent/ConsoleLog.o ../../../../cpp/offline/silent/IRunnable.o ../../../../cpp/o
ffline/silent/IProcess.o  ../../../../cpp/offline/silent/Process.o  ../../../../cpp/config
/DBConfig.o ../../../../cpp/offline/silent/Silent.o ../../../../cpp/offline/silent/DBAcces
s.o ../../../../cpp/offline/silent/FileAccess.o ../../../../cpp/offline/silent/ILog.o ../.
./../../cpp/offline/silent/FileLog.o    -L/oracle/product/lib32 -lclntsh -Wl -L../../../..
/lib -lTaskManage -lDBI -o ../../../../bin/exportcsu
/usr/ccs/bin/ld: Unsatisfied symbols:
   cpp::log::KernelLog::KernelLog(void)(first referenced in ../../../../cpp/offline/silent
/ILog.o) (code)
collect2: ld returned 1 exit status
gmake: *** [exportcsu] Error 1