undefined reference

[Cform]

编译时出错：
.o /e/pocobuild/Foundation/obj/MinGW/ia32/debug_shared/pcre_exec.o /e/pocobuild/Foundation/obj/MinGW/ia32/debug_shared/pcre_ord2utf8.o /e/pocobuild/Foundation/obj/MinGW/ia32/debug_shared/pcre_newline.o /e/pocobuild/Foundation/obj/MinGW/ia32/debug_shared/pcre_fullinfo.o /e/pocobuild/Foundation/obj/MinGW/ia32/debug_shared/pcre_xclass.o -L/e/pocobuild/lib/MinGW/ia32 -liphlpapi -lws2_32 -lpcre
Creating library file: e:/pocobuild/lib/MinGW/ia32/libPocoFoundationd.a
e:/pocobuild/Foundation/obj/MinGW/ia32/debug_shared/LoggingFactory.o(.text$_ZNK4Poco12InstantiatorINS_15EventLogChannelENS_7ChannelEE14createInstanceEv[Poco::Instantiator<Poco::EventLogChannel, Poco::Channel>::createInstance() const]+0x59): In function `ZN4Poco12InstantiatorINS_17FormattingChannelENS_7ChannelEED1Ev':
e:/poco-1.3.1-data/Foundation/include/Poco/Instantiator.h: undefined reference to `Poco::EventLogChannel::EventLogChannel()'
e:/pocobuild/Foundation/obj/MinGW/ia32/debug_shared/LoggingFactory.o(.text$_ZNK4Poco12InstantiatorINS_21WindowsConsoleChannelENS_7ChannelEE14createInstanceEv[Poco::Instantiator<Poco::WindowsConsoleChannel, Poco::Channel>::createInstance() const]+0x59):e:/poco-1.3.1-data/Foundation/include/Poco/Instantiator.h: undefined reference to `Poco::WindowsConsoleChannel::WindowsConsoleChannel()'
e:/pocobuild/Foundation/obj/MinGW/ia32/debug_shared/SyslogChannel.o(.text+0x6e4): In function `ZN4Poco13SyslogChannel4openEv':
e:/poco-1.3.1-data/Foundation/src/SyslogChannel.cpp:76: undefined reference to `openlog'
e:/pocobuild/Foundation/obj/MinGW/ia32/debug_shared/SyslogChannel.o(.text+0x702): In function `ZN4Poco13SyslogChannel5closeEv':
e:/poco-1.3.1-data/Foundation/src/SyslogChannel.cpp:85: undefined reference to `closelog'
e:/pocobuild/Foundation/obj/MinGW/ia32/debug_shared/SyslogChannel.o(.text+0x762): In function `ZN4Poco13SyslogChannel3logERKNS_7MessageE':
e:/poco-1.3.1-data/Foundation/src/SyslogChannel.cpp:94: undefined reference to `syslog'

看样子是是缺少可查了很久
第一我包含了<syslog.h>//这个只有openlog(),closelog()的声明，缺没有定义，
我不知道到底怎么回事？是不是g++时 没有带什么时候-l参数如果缺少库是缺那个我也不知道，望高手指点

[独孤过儿]

方便贴代码吗？谢谢

[晨星]

syslog用到什么库，函数使用手册里查不到么？

[WinWing]

不清楚,但看起来是没连接到必要的库

[nickshen_qidian]

syslog应该属于glibc中API.
尝试一下在e:/pocobuild/lib/MinGW/ia32/libPocoFoundationd.a
的makefile中加入glibc

[lddLinan]

syslog is a system call in linux/unix system, mingw possibly don't supply it. You can just redefined those function, remapping them to whatever you want.

[Cform]

我下载了gnuwin32的glibc库 编译时用了-lgw32c//（原库名为libgw32c.a这是gnuwin32的glibc库名，但是没用啊

[飞哥]

没有找到实现

如果是库要连接
如果是cpp需要编成o

[ITsignal]

应该是makefile中，objs没有加入相应模块，连接的时候出问题了。