Re: I want to use g_thread_init in dissector source file, but get a link error, Why?

[lookfar <lookfar () 163 com>]

Thank Guy Harris,Your Advice is very good,there is no error in link for g_thread_init.
the Key is:
> libwireshark_LIBS = \
>       $(GTHREAD_LIBS) \


In the beginning,I changed wrong place in makefile,I know I have to add libs,but I use the way for gcc,and I choosed 
wrong place,Since i don't understand the relation between epan and dissector.





在 2011-08-24 15:54:10，"Guy Harris" <guy () alum mit edu> 写道：
> On Aug 24, 2011, at 12:11 AM, lookfar wrote:
>
> >    正在创建库 libwireshark.lib 和对象 libwireshark.exp
> > dissectors.lib(packet-ppp.obj) : error LNK2019: 无法解析的外部符号 _g_thread_ini
> > t，该符号在函数 _proto_register_ppp 中被引用
> > libwireshark.dll : fatal error LNK1120: 1 个无法解析的外部命令
> > NMAKE : fatal error U1077: “"D:\Program Files\Microsoft Visual Studio 9.0\VC\BI
> > N\link.EXE"”: 返回代码“0x460”
> > Stop.
> > NMAKE : fatal error U1077: “"D:\Program Files\Microsoft Visual Studio 9.0\VC\BI
> > N\nmake.exe"”: 返回代码“0x2”
>
> For those of us who don't read Chinese, Google Translate says that's
>
>       Creating library libwireshark.lib and objects libwireshark.exp
>       dissectors.lib (packet-ppp.obj): error LNK2019: unresolved external symbol _g_thread_init, the symbol is 
> referenced in function _proto_register_ppp
>       libwireshark.dll: fatal error LNK1120: 1 unresolved externals
>       NMAKE: fatal error U1077: “"D:\Program Files\Microsoft Visual Studio 9.0\VC\BIN\link.EXE"”: return code "0x460"
>       Stop.
>       NMAKE: fatal error U1077: “"D:\Program Files\Microsoft Visual Studio 9.0\VC\BIN\nmake.exe"”: return code "0x2"
>       Stop.
>
> (why "fatal error" is in English and "return code" isn't, well...).
>
> > My version is wireshark-1.7.0-SVN-38520,I have changed the dissector nmake file to add line like:
> >
> > CFLAGS= $(WARNINGS_ARE_ERRORS) $(STANDARD_CFLAGS) \
> >      /I. /I.. /I../.. $(GLIB_CFLAGS) \
> >      $(GTHREAD_LIBS) \
> > #    `pkg-config --cflags --libs glib-2.0 gthread-2.0` \
> >      $(ZLIB_CFLAGS) \
> >      $(PCRE_CFLAGS) $(GNUTLS_CFLAGS) $(NETTLE_CFLAGS) \
> >      $(KFW_CFLAGS) $(AIRPCAP_CFLAGS) $(GEOIP_CFLAGS) \
> >      /I$(PCAP_DIR)\include
>
> What happens if you *don't* make that change, but, instead, change epan\Makefile.nmake to do something such as
>
> libwireshark_LIBS = \
>       $(GTHREAD_LIBS) \
>       $(GLIB_LIBS)    \
>       $(C_ARES_LIBS) \
>       $(ADNS_LIBS) \
>       $(KFW_LIBS) \
>       $(NETTLE_LIBS) \
>       $(ZLIB_LIBS) \
>       $(GNUTLS_LIBS) \
>       $(LUA_LIBS) \
>       $(PYTHON_LIBS) \
>       $(SMI_LIBS) \
>       $(GEOIP_LIBS) \
>       ..\wsutil\libwsutil.lib \
>       ..\wiretap\wiretap-$(WTAP_VERSION).lib \
>       crc\crc.lib \
>       crypt\airpdcap.lib \
>       ftypes\ftypes.lib \
>       dfilter\dfilter.lib \
>       $(WSLUA_LIB) \
>       $(WSPYTHON_LIB) \
>       dissectors\dissectors.lib
>
> so that libwireshark is linked with $(GTHREAD_LIBS)?
>
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