Wireshark · Wireshark-dev: [Wireshark-dev] idl2wrs: "multiple definition" linker errors when building multiple idl-dissectors a

[Alfonso Acosta Gómez <aacosta@xxxxxxx>]

Hi,

I am writing a script to create custom night-builds of wireshark 1.2.0 including dissectors for a set of idls.

My script follows wireshark's idl2wrs guide  [1]  and works flawlessly for a single IDL. However, building multiple idl-dissectors leads to "multiple definition" errors fro symbols `version', `plugin_register' and `plugin_reg_handoff'. (See the end of the e--mail for an error-sample)

It seems that the symbol clash is cause because idl2wrs is generating code sections like the following for _each_ dissector:

#ifndef ENABLE_STATIC
G_MODULE_EXPORT const gchar version[] = "0.0.1";
#endif

#ifndef ENABLE_STATIC

G_MODULE_EXPORT void
plugin_register(void)
{
....
}

G_MODULE_EXPORT void
plugin_reg_handoff(void){
...
}
#endif


Is idl2wrs to blame or am I doing something wrong?  In case it is, can anyone suggest a workaround?


Thanks in advance,

Alfonso Acosta


[1] http://www.wireshark.org/docs/wsug_html_chunked/AppToolsidl2wrs.html

Error example. 

When generating and building the following dissectors:

packet-tkcomcorbaapplication-idl.c  packet-tkcomcorbaguiinstallation-idl.c  packet-tkcomcorbaguiloginterest-idl.c
packet-tkcomcorbagui-idl.c          packet-tkcomcorbaguiinterest-idl.c      packet-tkcomcorbaprocesslist-idl.c

I get the following building errors:

make[3]: Entering directory `/tmp/wireshark-1.2.0/epan'
/bin/sh ../libtool --tag=CC --mode=link gcc  -DINET6 -D_U_="__attribute__((unused))" -g -O2 -Wall -W -Wdeclaration-after-statement -Wendif-labels -Wpointer-arith -Wno-pointer-sign -Wcast-align -Wformat-security -I/usr/local/include -pthread -I/usr/include/cairo -I/usr/include/freetype2 -I/usr/X11R6/include -I/usr/include/libpng12 -I/opt/gnome/include/gtk-2.0 -I/opt/gnome/lib/gtk-2.0/include -I/opt/gnome/include/atk-1.0 -I/opt/gnome/include/pango-1.0 -I/opt/gnome/include/glib-2.0 -I/opt/gnome/lib/glib-2.0/include    -L/usr/local/lib -L/usr/local/lib -L/usr/local/lib -L/usr/local/lib -L/usr/local/lib -o libwireshark.la -rpath /usr/local/lib -version-info 0:1:0  libwireshark_la-addr_and_mask.lo libwireshark_la-addr_resolv.lo libwireshark_la-adler32.lo libwireshark_la-afn.lo libwireshark_la-asn1.lo libwireshark_la-atalk-utils.lo libwireshark_la-base64.lo libwireshark_la-bitswap.lo libwireshark_la-camel-persistentdata.lo libwireshark_la-charsets.lo libwireshark_la-circuit.lo libwireshark_la-codecs.lo libwireshark_la-column.lo libwireshark_la-column-utils.lo libwireshark_la-conversation.lo libwireshark_la-crc10.lo libwireshark_la-crc16.lo libwireshark_la-crc32.lo libwireshark_la-crc6.lo libwireshark_la-crcdrm.lo libwireshark_la-dissector_filters.lo libwireshark_la-emem.lo libwireshark_la-epan.lo libwireshark_la-ex-opt.lo libwireshark_la-except.lo libwireshark_la-expert.lo libwireshark_la-filesystem.lo libwireshark_la-follow.lo libwireshark_la-frame_data.lo libwireshark_la-frequency-utils.lo libwireshark_la-funnel.lo libwireshark_la-gcp.lo libwireshark_la-geoip_db.lo libwireshark_la-golay.lo libwireshark_la-guid-utils.lo libwireshark_la-h225-persistentdata.lo libwireshark_la-in_cksum.lo libwireshark_la-ipproto.lo libwireshark_la-ipv4.lo libwireshark_la-next_tvb.lo libwireshark_la-nstime.lo libwireshark_la-oids.lo libwireshark_la-osi-utils.lo libwireshark_la-packet.lo libwireshark_la-plugins.lo libwireshark_la-prefs.lo libwireshark_la-proto.lo libwireshark_la-range.lo libwireshark_la-reassemble.lo libwireshark_la-reedsolomon.lo libwireshark_la-report_err.lo libwireshark_la-req_resp_hdrs.lo libwireshark_la-sigcomp_state_hdlr.lo libwireshark_la-sigcomp-udvm.lo libwireshark_la-sminmpec.lo libwireshark_la-sna-utils.lo libwireshark_la-stat_cmd_args.lo libwireshark_la-stats_tree.lo libwireshark_la-strutil.lo libwireshark_la-stream.lo libwireshark_la-t35.lo libwireshark_la-tap.lo libwireshark_la-tcap-persistentdata.lo libwireshark_la-timestamp.lo libwireshark_la-tfs.lo libwireshark_la-to_str.lo libwireshark_la-tvbparse.lo libwireshark_la-tvbuff.lo libwireshark_la-uat.lo libwireshark_la-value_string.lo libwireshark_la-xdlc.lo  libwireshark_generated.la libwireshark_asmopt.la crc/libcrc.la crypt/libairpdcap.la ftypes/libftypes.la dfilter/libdfilter.la dissectors/libdissectors.la dissectors/libdirtydissectors.la  -lgcrypt -lgpg-error ../wsutil/libwsutil.la -lm -lz 
gcc -shared  .libs/libwireshark_la-addr_and_mask.o .libs/libwireshark_la-addr_resolv.o .libs/libwireshark_la-adler32.o .libs/libwireshark_la-afn.o .libs/libwireshark_la-asn1.o .libs/libwireshark_la-atalk-utils.o .libs/libwireshark_la-base64.o .libs/libwireshark_la-bitswap.o .libs/libwireshark_la-camel-persistentdata.o .libs/libwireshark_la-charsets.o .libs/libwireshark_la-circuit.o .libs/libwireshark_la-codecs.o .libs/libwireshark_la-column.o .libs/libwireshark_la-column-utils.o .libs/libwireshark_la-conversation.o .libs/libwireshark_la-crc10.o .libs/libwireshark_la-crc16.o .libs/libwireshark_la-crc32.o .libs/libwireshark_la-crc6.o .libs/libwireshark_la-crcdrm.o .libs/libwireshark_la-dissector_filters.o .libs/libwireshark_la-emem.o .libs/libwireshark_la-epan.o .libs/libwireshark_la-ex-opt.o .libs/libwireshark_la-except.o .libs/libwireshark_la-expert.o .libs/libwireshark_la-filesystem.o .libs/libwireshark_la-follow.o .libs/libwireshark_la-frame_data.o .libs/libwireshark_la-frequency-utils.o .libs/libwireshark_la-funnel.o .libs/libwireshark_la-gcp.o .libs/libwireshark_la-geoip_db.o .libs/libwireshark_la-golay.o .libs/libwireshark_la-guid-utils.o .libs/libwireshark_la-h225-persistentdata.o .libs/libwireshark_la-in_cksum.o .libs/libwireshark_la-ipproto.o .libs/libwireshark_la-ipv4.o .libs/libwireshark_la-next_tvb.o .libs/libwireshark_la-nstime.o .libs/libwireshark_la-oids.o .libs/libwireshark_la-osi-utils.o .libs/libwireshark_la-packet.o .libs/libwireshark_la-plugins.o .libs/libwireshark_la-prefs.o .libs/libwireshark_la-proto.o .libs/libwireshark_la-range.o .libs/libwireshark_la-reassemble.o .libs/libwireshark_la-reedsolomon.o .libs/libwireshark_la-report_err.o .libs/libwireshark_la-req_resp_hdrs.o .libs/libwireshark_la-sigcomp_state_hdlr.o .libs/libwireshark_la-sigcomp-udvm.o .libs/libwireshark_la-sminmpec.o .libs/libwireshark_la-sna-utils.o .libs/libwireshark_la-stat_cmd_args.o .libs/libwireshark_la-stats_tree.o .libs/libwireshark_la-strutil.o .libs/libwireshark_la-stream.o .libs/libwireshark_la-t35.o .libs/libwireshark_la-tap.o .libs/libwireshark_la-tcap-persistentdata.o .libs/libwireshark_la-timestamp.o .libs/libwireshark_la-tfs.o .libs/libwireshark_la-to_str.o .libs/libwireshark_la-tvbparse.o .libs/libwireshark_la-tvbuff.o .libs/libwireshark_la-uat.o .libs/libwireshark_la-value_string.o .libs/libwireshark_la-xdlc.o -Wl,--whole-archive ./.libs/libwireshark_generated.a ./.libs/libwireshark_asmopt.a crc/.libs/libcrc.a crypt/.libs/libairpdcap.a ftypes/.libs/libftypes.a dfilter/.libs/libdfilter.a dissectors/.libs/libdissectors.a dissectors/.libs/libdirtydissectors.a -Wl,--no-whole-archive  -Wl,--rpath -Wl,/tmp/wireshark-1.2.0/wsutil/.libs -L/usr/local/lib -L/opt/gnome/lib /opt/gnome/lib/libgmodule-2.0.so -ldl /opt/gnome/lib/libglib-2.0.so /usr/lib/libpcre.so /usr/lib/libgcrypt.so -L/usr/lib /usr/lib/libgpg-error.so ../wsutil/.libs/libwsutil.so -lm -lz  -pthread -Wl,-soname -Wl,libwireshark.so.0 -o .libs/libwireshark.so.0.0.1
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaapplication-idl.o): In function `plugin_reg_handoff':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaapplication-idl.c:512: multiple definition of `plugin_reg_handoff'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:565: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaapplication-idl.o): In function `plugin_register':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaapplication-idl.c:505: multiple definition of `plugin_register'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:558: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaapplication-idl.o): In function `proto_register_handoff_giop_tkcomcorbaapplication':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaapplication-idl.c:484: multiple definition of `version'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:537: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiloginterest-idl.o): In function `plugin_reg_handoff':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiloginterest-idl.c:434: multiple definition of `plugin_reg_handoff'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:565: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiloginterest-idl.o): In function `plugin_register':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiloginterest-idl.c:427: multiple definition of `plugin_register'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:558: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiloginterest-idl.o): In function `proto_register_handoff_giop_tkcomcorbaguiloginterest': /tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiloginterest-idl.c:406: multiple definition of `version'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:537: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaprocesslist-idl.o): In function `plugin_reg_handoff':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaprocesslist-idl.c:3516: multiple definition of `plugin_reg_handoff'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:565: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaprocesslist-idl.o): In function `plugin_register':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaprocesslist-idl.c:3509: multiple definition of `plugin_register'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:558: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaprocesslist-idl.o): In function `proto_register_handoff_giop_tkcomcorbaprocesslist':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaprocesslist-idl.c:3468: multiple definition of `version'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:537: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbagui-idl.o): In function `plugin_reg_handoff':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbagui-idl.c:434: multiple definition of `plugin_reg_handoff'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:565: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbagui-idl.o): In function `plugin_register':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbagui-idl.c:427: multiple definition of `plugin_register'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:558: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbagui-idl.o): In function `proto_register_handoff_giop_tkcomcorbagui':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbagui-idl.c:406: multiple definition of `version'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:537: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinterest-idl.o): In function `plugin_reg_handoff':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinterest-idl.c:815: multiple definition of `plugin_reg_handoff'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:565: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinterest-idl.o): In function `plugin_register':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinterest-idl.c:808: multiple definition of `plugin_register'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:558: first defined here
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinterest-idl.o): In function `proto_register_handoff_giop_tkcomcorbaguiinterest':
/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinterest-idl.c:787: multiple definition of `version'
dissectors/.libs/libdissectors.a(libdissectors_la-packet-tkcomcorbaguiinstallation-idl.o):/tmp/wireshark-1.2.0/epan/dissectors/packet-tkcomcorbaguiinstallation-idl.c:537: first defined here
collect2: ld returned 1 exit status
make[3]: *** [libwireshark.la] Error 1
make[3]: Leaving directory `/tmp/wireshark-1.2.0/epan'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/tmp/wireshark-1.2.0/epan'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/tmp/wireshark-1.2.0'
make: *** [all] Error 2
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