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2014-03-30 11:54 GMT+02:00 我想不无聊 <[email protected]>: > If i define the variable in the wireshark directory and i use it in the > /wiretap and /epan/dissectors whether or not should i use the WS_DLL_PUBLIC > macro,and by the way i use the wireshark 1.6.5 edition,then what should i > do. > If you use Wireshark 1.6.5 source code, you must declare your structure as WS_VAR_IMPORT instead of extern, and add it to wtap.def file. Something like: WS_VAR_IMPORT performance* performance_test; and in wtap.def: performance_test DATA You can look at other examples of the use of WS_VAR_IMPORT in the source code. Regards, Pascal. PS: there is no need to send multiple emails to the mailing list with the same question over and over. > ------------------ 原始邮件 ------------------ > *发件人:* "Pascal Quantin";<[email protected]>; > *发送时间:* 2014年3月30日(星期天) 下午5:06 > *收件人:* "Developer support list for Wireshark"<[email protected]>; > > *主题:* Re: [Wireshark-dev] how to use the wireshark source code to > developapplication? > > > Le 30 mars 2014 08:58, "我想不无聊" <[email protected]> a écrit : > > > > I want to store some information about packets and transmit among > files,so i create a file in wireshark root directory,named performance.h: > > > > //performance.h > > #include <glib.h> > > typedef struct performance_s > > { > > gfloat time[100]; > > gfloat delay[100]; > > guint32 packetSize[100]; > > guint32 payload; > > guint32 index; > > guint32 temp_size; > > gfloat temp_time; > > }performance; > > extern peformance* performance_test; > > > > in the file ,i declare a struct and declare a pointer to it,then i want > to use the variable "performance_test" in file wiretap/libpcap.c, > epan/dissectors/packet-ieee80211.c,so i define the variable > "peformance_test" in performance.c in wireshark root directory and include > the head file in wiretap/libpcap.c, epan/dissectors/packet-ieee80211.c ,but > once i use the variable in these two files,when i compile the wireshark > project,it come up with one error:undefined reference to 'peformance_test'. > > > > it looks like the variable peformance_test should be defined and used in > the same file ,if i want to use it in different files,i think i should > modify the makefile.common to change the compile process ,but i don't know > how .could someone help me fix it,please! > > Hi, > > Assuming you work on the master branch (Wireshark 1.11.X), if you want to > use in libwireshark a variable defined in libwiretap, you should export the > symbol with the WS_DLL_PUBLIC macro instead of using extern. Do not forget > to include ws_symbol_export.h file also. > You can search in the code for examples of the use of this macro. > > Regards, > Pascal. >
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