Hello Wireshark-dev community, Apparently, I still don't have the correct sequence of steps necessary for first time generation of "packet-myfoo.c" and "packet-myfoo.h" for a new ASN.1-based dissector called myfoo. Details follow.
I would like to understand (much better than I do) how to add an ASN.1-based dissector to epan/dissectors/asn1 in a fresh clone of wireshark. I got a lot of help from a lot of people last week (for which I am grateful) but I must still be missing a step here: git clone https://<wireshark repo> wireshark cd wireshark git checkout wireshark-3.4.4 cd .. mkdir build cd build cmake ../wireshark #this step worked previously but not on a fresh wireshark clone now make asn1 #with relevant entries in two CMakeListsCustom files make When I add my dissector folder "myfoo" to epan/dissectors/asn1 here's the relevant error messages from cmake (with some highlighting by me): *-- Configuring doneCMake Error at epan/dissectors/CMakeLists.txt:2004 (add_library): Cannot find source file: /home/vtrandal/ws1/wireshark/epan/dissectors/packet-myfoo.c Tried extensions .c .C .c++ .cc .cpp .cxx .cu .m .M .mm .h .hh .h++ .hm .hpp .hxx .in .txxCMake Error at epan/dissectors/CMakeLists.txt:2004 (add_library): No SOURCES given to target: dissectors* [end of cmake error messages] The point of the above cmake error messages is that the "packet-myfoo.c" and "packet-myfoo.h" files have not yet been generated (and I don't know how to generate them). I do not know how I got past the cmake step before, but I was lucky (and unlucky now). The ASN.1-based dissector code is in the attached .tgz file which I extract in epan/dissectors as follows: tar xvf myfoo.tgz ./CMakeListsCustom.txt <== contains entry for myfoo ./asn1/CMakeListsCustom.txt <== contains entry for myfoo ./asn1/myfoo/ ./asn1/myfoo/myfoo.asn ./asn1/myfoo/myfoo.cnf ./asn1/myfoo/CMakeLists.txt ./asn1/myfoo/packet-myfoo-template.h ./asn1/myfoo/packet-myfoo-template.c I apologize in advance for being thick-headed about the process of adding a new ASN.1-based dissector to epan/dissectors/asn1 in Wireshark. With help from a lot of people I got it to compile previously (again for which I am grateful). But I cannot repeat that success starting with a fresh clone of wireshark regardless of the branch. Somehow I still don't have the correct sequence of steps necessary to generate "packet-myfoo.c" and "packet-myfoo.h" the first time. With my dissector code in epan/dissectors the cmake step fails and I cannot make anything. Vincent NOTE: The attached dissector code is based on the simple ASN.1-based dissector example online. https://www.wireshark.org/docs/wsdg_html_chunked/SimpleASN1BasedDissector.html
myfoo.tgz
Description: application/compressed-tar
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