编译静态库问题 请大家帮忙解决一下

wjh19870407

g++ -o xmltest xmltest.cpp tinyxml.cpp tinystr.cpp tinyxmlerror.cpp tinyxmlparser.cpp
编译可以成功

但是做成静态库   ar cr tiny.a  tinyxml.o tinystr.o tinyxmlerror.o tinyxmlparser.o

编译 g++ -o xmltest xmltest.cpp -L.-l tiny.a  就报错了

都是这一系列这样的错误，列出一部分，都是 “undefined reference to ”的错误
/tmp/cceTNVUr.o: In function `TiXmlString:perator+=(char const*)':
xmltest.cpp.text._ZN11TiXmlStringpLEPKc[TiXmlString:perator+=(char const*)]+0x23): undefined reference to `TiXmlString::append(char const*, unsigned int)'
/tmp/cceTNVUr.o: In function `TiXmlString:perator+=(TiXmlString const&)':
xmltest.cpp.text._ZN11TiXmlStringpLERKS_[TiXmlString:perator+=(TiXmlString const&)]+0x2e): undefined reference to `TiXmlString::append(char const*, unsigned int)'
/tmp/cceTNVUr.o: In function `TiXmlString:perator=(char const*)':
xmltest.cpp.text._ZN11TiXmlStringaSEPKc[TiXmlString:perator=(char const*)]+0x23): undefined reference to `TiXmlString::assign(char const*, unsigned int)'
/tmp/cceTNVUr.o: In function `TiXmlString:perator=(TiXmlString const&)':
xmltest.cpp.text._ZN11TiXmlStringaSERKS_[TiXmlString:perator=(TiXmlString const&)]+0x2e): undefined reference to `TiXmlString::assign(char const*, unsigned int)'
collect2: ld 返回 1

默难

先把xxxtest.cpp编译成.o
然后把.o和.a链接在一起