[Jeff Morriss <jeff.morriss.ws@xxxxxxxxx>]

Was sctp_packet_lost_stat_dlg.c compiled and linked into gtk/libui.a ? 
Was automake re-run (usually when I update Makefile.common, automake is 
automatically rerun).  If not, try re-running autogen.sh and configure.

Is it possible that the missing symbol is declared as static?

(BTW, I notice that you're developing against something other than the 
current trunk; if you intend to submit your work for inclusion in 
Wireshark, you really should be working on trunk, not the 1.6 trunk.)

黄登辉 wrote:
> Hi
>    Thanks, yes,add all exported symbols in epan/libwireshark.def can fix 
> my problem.
>   
>    Another problem,  i want to add a file named as 
> sctp_packet_lost_stat_dlg.c in gtk directory, and add menuitem 
> SctpPacketLostStat in Statistics.
> in order to make this menuitem available, i make some change in menus.c, 
> also modified gtk/Makefile.common to make sctp_packet_lost_stat_dlg.c be 
> compiled in to
> wireshark. like the following
> WIRESHARK_GTK_SRC = \
>     about_dlg.c    \
> ........
>     summary_dlg.c    \
>     sctp_packet_lost_stat_dlg.c \
> ..........
>
> but i still get compile error
>
> libtool: link: (cd .libs && gcc -DINET6 -D_U_="__attribute__((unused))" 
> -g -O2 -Wall -W -Wextra -Wdeclaration-after-statement -Wendif-labels 
> -Wpointer-arith -Wno-pointer-sign -Warray-bounds -Wcast-align 
> -Wformat-security -I/usr/local/include -pthread -I/usr/include/gtk-2.0 
> -I/usr/lib64/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo 
> -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 
> -I/usr/lib64/glib-2.0/include -I/usr/include/pixman-1 
> -I/usr/include/freetype2 -I/usr/include/libpng12 -c -fno-builtin 
> "wiresharkS.c")
> libtool: link: rm -f ".libs/wiresharkS.c" ".libs/wireshark.nm" 
> ".libs/wireshark.nmS" ".libs/wireshark.nmT"
> libtool: link: gcc -DINET6 "-D_U_=__attribute__((unused))" -g -O2 -Wall 
> -W -Wextra -Wdeclaration-after-statement -Wendif-labels -Wpointer-arith 
> -Wno-pointer-sign -Warray-bounds -Wcast-align -Wformat-security 
> -I/usr/local/include -pthread -I/usr/include/gtk-2.0 
> -I/usr/lib64/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo 
> -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 
> -I/usr/lib64/glib-2.0/include -I/usr/include/pixman-1 
> -I/usr/include/freetype2 -I/usr/include/libpng12 -Wl,--as-needed -o 
> .libs/wireshark wireshark-capture-pcap-util-unix.o 
> wireshark-capture-pcap-util.o wireshark-cfile.o 
> wireshark-clopts_common.o wireshark-disabled_protos.o 
> wireshark-frame_data_sequence.o wireshark-packet-range.o 
> wireshark-print.o wireshark-ps.o wireshark-sync_pipe_write.o 
> wireshark-timestats.o wireshark-util.o wireshark-tap-megaco-common.o 
> wireshark-tap-rtp-common.o wireshark-version_info.o 
> wireshark-capture_errs.o wireshark-capture_ifinfo.o 
> wireshark-capture_ui_utils.o wireshark-airpcap_loader.o 
> wireshark-alert_box.o wireshark-capture.o wireshark-capture_info.o 
> wireshark-capture_opts.o wireshark-capture_sync.o 
> wireshark-color_filters.o wireshark-file.o wireshark-fileset.o 
> wireshark-filters.o wireshark-g711.o wireshark-merge.o 
> wireshark-proto_hier_stats.o wireshark-summary.o wireshark-tempfile.o 
> wireshark-u3.o .libs/wiresharkS.o -pthread -Wl,--export-dynamic  
> -L/usr/local/lib gtk/libui.a gtk/libui_dirty.a codecs/libcodec.a 
> wiretap/.libs/libwiretap.so epan/.libs/libwireshark.so 
> wsutil/.libs/libwsutil.so -lpcap -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 
> -lgio-2.0 -lpangoft2-1.0 -lgdk_pixbuf-2.0 -lpangocairo-1.0 -lcairo 
> -lpango-1.0 -lfreetype -lfontconfig -lgobject-2.0 -lgmodule-2.0 
> -lgthread-2.0 -lrt -lglib-2.0 -lm -lz -pthread -Wl,-rpath -Wl,/usr/local/lib
> gtk/libui.a(libui_a-menus.o):(.data+0x20d0): undefined reference to 
> `sctp_packet_lost_stat_cb'
>
> Did i miss some steps to make thing right?
>
> 2012/5/30 Jeff Morriss <jeff.morriss.ws@xxxxxxxxx 
> <mailto:jeff.morriss.ws@xxxxxxxxx>>
>
>     黄登辉 wrote:
>
>         Hi
>            I meet a problem, i define a global variable e.g.
>         g_sctp_packet_analyzing_debug in packet-sctp.c, then we want to
>         access it in tshark.c.
>         even make a statement in tshark.c, i still meet link error
>         undefined reference to `g_sctp_packet_analyzing___debug. i know
>         it should be linked with
>         packet-sctp.o, but seems that wireshark compile system don't
>         generate object file packet-sctp.o, i am not familiar with
>         wireshark compile system.
>         Any expert can help me this out? thanks.
>
>
>     Any symbols put in libwireshark (e.g., from packet-sctp.c) need to
>     be exported by being listed in epan/libwireshark.def .  (That file
>     used to be only for Win32, but now *NIX builds also use it.)
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