Thank you very much, it works :) Harris Hancock <[email protected]> ezt írta (időpont: 2019. jún. 9., V, 17:32):
> The samples directory has an example of how to use capnp_generate_cpp(): > https://github.com/capnproto/capnproto/blob/master/c%2B%2B/samples/CMakeLists.txt#L24 > > As Stuart said, it only runs when required. > > On Sun, Jun 9, 2019 at 7:35 AM Stuart Dootson <[email protected]> > wrote: > >> On Sun, 9 Jun 2019 at 14:51, 'Kenton Varda' via Cap'n Proto < >> [email protected]> wrote: >> >>> Hi Adam, >>> >>> Is cmake running the capnp tool every time, or only when the capnp files >>> change? I would suggest configuring it to only re-run the code generation >>> when the .capnp files have changed. I don't personally know cmake but it >>> surely supports this. >>> >>> Unfortunately you are correct that there's no good way to >>> forward-declare the nested types generated by the capnp tool. >>> >>> -Kenton >>> >>> On Fri, Jun 7, 2019 at 6:54 AM Ádám Balázs <[email protected]> wrote: >>> >>>> Hi all, >>>> >>>> I try to use Cap'NProto in a CMake based C++ project. CMake runs capnp >>>> tool to generate headers/sources and adds them to the project. With this >>>> approach I eliminate the inconsistent states, however the generated files >>>> are touched every time CMake runs, so the compiler recompiles them during >>>> the build. With forward declaration it wouldn't be a big deal, but as far >>>> as I understand the generated code I can not forward declare builders and >>>> readers since they are nested classes. This is a really unfortunate >>>> situation, because the headers using the generated code are used in many >>>> components (configurations). Can I somehow forward declare generated >>>> classes? Could you advise some technique to solve the described situation? >>>> Is it intended to prohibit forward declaration? >>>> >>>> Thank you in advance: Adam >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Cap'n Proto" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> Visit this group at https://groups.google.com/group/capnproto. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/capnproto/d84ad038-22be-48c0-aac3-050fafc18ca1%40googlegroups.com >>>> <https://groups.google.com/d/msgid/capnproto/d84ad038-22be-48c0-aac3-050fafc18ca1%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Cap'n Proto" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> Visit this group at https://groups.google.com/group/capnproto. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/capnproto/CAJouXQ%3DSbRggayxzM1goybtb-%3D6LsEKMAoVeMJTDH-envvBw%3DQ%40mail.gmail.com >>> <https://groups.google.com/d/msgid/capnproto/CAJouXQ%3DSbRggayxzM1goybtb-%3D6LsEKMAoVeMJTDH-envvBw%3DQ%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >> >> >> There’s a function (CAPNP_GENERATE_CPP) defined in the file >> ‘CapnProtoMacros.cmake’ which has CMake code to generate C++ files for >> capnp files. It looks like it’s set up properly to only run when required >> (by which I mean it uses ‘add_custom_command’ with appropriate output & >> dependency parameters set up). I’ve used the same setup for other codegen >> tasks, and it’s worked fine. >> >> The custom command generates the source (by default) in >> CMAKE_CURRENT_BINARY_DIR, which is what you’d expect for CMake. It’ll >> regenerate the files for a new build directory, but after that should >> manage dependencies correctly after that. >> >> Stuart >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Cap'n Proto" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> Visit this group at https://groups.google.com/group/capnproto. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/capnproto/CA%2BL%2BJktf_ivaDsTsi%3D6dSUWkDAewKZ1v0%3Dz3O%2BddR4XH1XXnZg%40mail.gmail.com >> <https://groups.google.com/d/msgid/capnproto/CA%2BL%2BJktf_ivaDsTsi%3D6dSUWkDAewKZ1v0%3Dz3O%2BddR4XH1XXnZg%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "Cap'n Proto" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/capnproto. To view this discussion on the web visit https://groups.google.com/d/msgid/capnproto/CADWi_B-LG3Q-zRg6oMONst4eKd2DL36Na1H9FdTD2Y_AERy%3D8A%40mail.gmail.com.
