ci: Add NetBSD job

[hebasto]

The master branch @ 1b8d4a6 fails to build on NetBSD.

See: https://github.com/hebasto/libmultiprocess/actions/runs/17175941246/job/48731811650

[DrahtBot]

The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

Reviews

See the guideline for information on the review process.
A summary of reviews will appear here.

[ryanofsky]

Errors all appear to be undefined reference to 'kj::getCaughtExceptionAsKj()' linker errors

[ryanofsky]

I noticed getCaughtExceptionAsKj doesn't seem to be defined if KJ_NO_EXCEPTIONS is defined. Doesn't look like netbsd is defining that though https://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/devel/capnproto/

[Sjors]

Maybe rebase after #197 for easier review?

[hebasto]

Maybe rebase after #197 for easier review?

Sure! Rebased.

[ryanofsky]

Assuming the netbsd job still fails, I guess there are different directions we may go with this issue:

• If it's possible to fix this with a change in libmultiprocess that would be ideal.
• If that's not possible, then maybe netbsd job could install from capnproto from source and we could report an issue to netbsd.
• If installing capnproto from source doesn't work, this will require a fix in capnproto.

And regardless of these, we may want to add a try_compile test and error with suggested workarounds along the lines of #205

[hebasto]

Assuming the netbsd job still fails, I guess there are different directions we may go with this issue:

• If it's possible to fix this with a change in libmultiprocess that would be ideal.

• If that's not possible, then maybe netbsd job could install from capnproto from source and we could report an issue to netbsd.

• If installing capnproto from source doesn't work, this will require a fix in capnproto.

And regardless of these, we may want to add a try_compile test and error with suggested workarounds along the lines of #205

FWIW, build with depends succeeds: https://github.com/hebasto/bitcoin-core-nightly/actions/runs/17482518540/job/49655572035.

[maflcko]

Could rebase for fresh CI logs?

[hebasto]

Could rebase for fresh CI logs?

Sure thing! Done.

[maflcko]

For reference, the full error is:

[7/7] Linking CXX executable test/mptest
FAILED: [code=1] test/mptest 
: && /usr/pkg/gcc14/bin/g++ -Werror -Wall -Wextra -Wpedantic -Wno-unused-parameter  test/CMakeFiles/mptest.dir/mp/test/test.cpp.o test/CMakeFiles/mptest.dir/mp/test/foo.capnp.c++.o test/CMakeFiles/mptest.dir/mp/test/foo.capnp.proxy-client.c++.o test/CMakeFiles/mptest.dir/mp/test/foo.capnp.proxy-server.c++.o test/CMakeFiles/mptest.dir/mp/test/foo.capnp.proxy-types.c++.o -o test/mptest  -Wl,-rpath,/usr/pkg/lib  libmultiprocess.a  /usr/pkg/lib/libkj-test-1.1.0.so  /usr/pkg/lib/libcapnp-rpc-1.1.0.so  /usr/pkg/lib/libcapnp-1.1.0.so  /usr/pkg/lib/libkj-async-1.1.0.so  /usr/pkg/lib/libkj-1.1.0.so  -lpthread  -Wl,-R/usr/pkg/lib  -pthread  -lpthread && :
/usr/bin/ld: warning: libstdc++.so.9, needed by /usr/pkg/lib/libkj-test-1.1.0.so, may conflict with libstdc++.so.7
/usr/bin/ld: test/CMakeFiles/mptest.dir/mp/test/foo.capnp.proxy-server.c++.o: in function `kj::Maybe<kj::Exception> kj::runCatchingExceptions<mp::PassField<mp::Accessor<mp::foo_fields::Context, 17>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackParams, mp::test::messages::FooInterface::CallbackResults> >, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > >, mp::TypeList<mp::test::FooCallback&, int> >(mp::Priority<1>, mp::TypeList<>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackParams, mp::test::messages::FooInterface::CallbackResults> >&, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > > const&, mp::TypeList<mp::test::FooCallback&, int>&&)::{lambda()#1}::operator()()::{lambda()#3}>(mp::PassField<mp::Accessor<mp::foo_fields::Context, 17>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackParams, mp::test::messages::FooInterface::CallbackResults> >, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > >, mp::TypeList<mp::test::FooCallback&, int> >(mp::Priority<1>, mp::TypeList<>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackParams, mp::test::messages::FooInterface::CallbackResults> >&, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > > const&, mp::TypeList<mp::test::FooCallback&, int>&&)::{lambda()#1}::operator()()::{lambda()#3}&&)':
foo.capnp.proxy-server.c++:(.text._ZN2kj21runCatchingExceptionsIZZN2mp9PassFieldINS1_8AccessorINS1_10foo_fields7ContextELi17EEENS1_19ServerInvokeContextINS1_11ProxyServerINS1_4test8messages12FooInterfaceEEEN5capnp11CallContextINSB_14CallbackParamsENSB_15CallbackResultsEEEEENS1_11ServerFieldILi1ENS3_INS4_8CallbackELi17EEENSJ_ILi1ENS3_INS4_3ArgELi1EEENS1_9ServerRetINS3_INS4_6ResultELi2EEENS1_10ServerCallEEEEEEEJNS1_8TypeListIJRNS9_11FooCallbackEiEEEEEENSt9enable_ifIXsrSt7is_sameIDTclsrT_3getcldtdtfp1_12call_context9getParamsEEENS1_7Context6ReaderEE5valueENS_7PromiseINT0_11CallContextEEEE4typeENS1_8PriorityILi1EEENSV_IJEEERS17_RKT1_DpOT2_ENUlvE_clEvEUlvE1_EENS_5MaybeINS_9ExceptionEEEOS11_[_ZN2kj21runCatchingExceptionsIZZN2mp9PassFieldINS1_8AccessorINS1_10foo_fields7ContextELi17EEENS1_19ServerInvokeContextINS1_11ProxyServerINS1_4test8messages12FooInterfaceEEEN5capnp11CallContextINSB_14CallbackParamsENSB_15CallbackResultsEEEEENS1_11ServerFieldILi1ENS3_INS4_8CallbackELi17EEENSJ_ILi1ENS3_INS4_3ArgELi1EEENS1_9ServerRetINS3_INS4_6ResultELi2EEENS1_10ServerCallEEEEEEEJNS1_8TypeListIJRNS9_11FooCallbackEiEEEEEENSt9enable_ifIXsrSt7is_sameIDTclsrT_3getcldtdtfp1_12call_context9getParamsEEENS1_7Context6ReaderEE5valueENS_7PromiseINT0_11CallContextEEEE4typeENS1_8PriorityILi1EEENSV_IJEEERS17_RKT1_DpOT2_ENUlvE_clEvEUlvE1_EENS_5MaybeINS_9ExceptionEEEOS11_]+0x52): undefined reference to `kj::getCaughtExceptionAsKj()'
/usr/bin/ld: test/CMakeFiles/mptest.dir/mp/test/foo.capnp.proxy-server.c++.o: in function `kj::Maybe<kj::Exception> kj::runCatchingExceptions<mp::PassField<mp::Accessor<mp::foo_fields::Context, 17>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackUniqueParams, mp::test::messages::FooInterface::CallbackUniqueResults> >, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > >, mp::TypeList<std::unique_ptr<mp::test::FooCallback, std::default_delete<mp::test::FooCallback> >, int> >(mp::Priority<1>, mp::TypeList<>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackUniqueParams, mp::test::messages::FooInterface::CallbackUniqueResults> >&, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > > const&, mp::TypeList<std::unique_ptr<mp::test::FooCallback, std::default_delete<mp::test::FooCallback> >, int>&&)::{lambda()#1}::operator()()::{lambda()#3}>(mp::PassField<mp::Accessor<mp::foo_fields::Context, 17>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackUniqueParams, mp::test::messages::FooInterface::CallbackUniqueResults> >, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > >, mp::TypeList<std::unique_ptr<mp::test::FooCallback, std::default_delete<mp::test::FooCallback> >, int> >(mp::Priority<1>, mp::TypeList<>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackUniqueParams, mp::test::messages::FooInterface::CallbackUniqueResults> >&, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > > const&, mp::TypeList<std::unique_ptr<mp::test::FooCallback, std::default_delete<mp::test::FooCallback> >, int>&&)::{lambda()#1}::operator()()::{lambda()#3}&&)':
foo.capnp.proxy-server.c++:(.text._ZN2kj21runCatchingExceptionsIZZN2mp9PassFieldINS1_8AccessorINS1_10foo_fields7ContextELi17EEENS1_19ServerInvokeContextINS1_11ProxyServerINS1_4test8messages12FooInterfaceEEEN5capnp11CallContextINSB_20CallbackUniqueParamsENSB_21CallbackUniqueResultsEEEEENS1_11ServerFieldILi1ENS3_INS4_8CallbackELi17EEENSJ_ILi1ENS3_INS4_3ArgELi1EEENS1_9ServerRetINS3_INS4_6ResultELi2EEENS1_10ServerCallEEEEEEEJNS1_8TypeListIJSt10unique_ptrINS9_11FooCallbackESt14default_deleteISX_EEiEEEEEENSt9enable_ifIXsrSt7is_sameIDTclsrT_3getcldtdtfp1_12call_context9getParamsEEENS1_7Context6ReaderEE5valueENS_7PromiseINT0_11CallContextEEEE4typeENS1_8PriorityILi1EEENSV_IJEEERS1A_RKT1_DpOT2_ENUlvE_clEvEUlvE1_EENS_5MaybeINS_9ExceptionEEEOS14_[_ZN2kj21runCatchingExceptionsIZZN2mp9PassFieldINS1_8AccessorINS1_10foo_fields7ContextELi17EEENS1_19ServerInvokeContextINS1_11ProxyServerINS1_4test8messages12FooInterfaceEEEN5capnp11CallContextINSB_20CallbackUniqueParamsENSB_21CallbackUniqueResultsEEEEENS1_11ServerFieldILi1ENS3_INS4_8CallbackELi17EEENSJ_ILi1ENS3_INS4_3ArgELi1EEENS1_9ServerRetINS3_INS4_6ResultELi2EEENS1_10ServerCallEEEEEEEJNS1_8TypeListIJSt10unique_ptrINS9_11FooCallbackESt14default_deleteISX_EEiEEEEEENSt9enable_ifIXsrSt7is_sameIDTclsrT_3getcldtdtfp1_12call_context9getParamsEEENS1_7Context6ReaderEE5valueENS_7PromiseINT0_11CallContextEEEE4typeENS1_8PriorityILi1EEENSV_IJEEERS1A_RKT1_DpOT2_ENUlvE_clEvEUlvE1_EENS_5MaybeINS_9ExceptionEEEOS14_]+0x52): undefined reference to `kj::getCaughtExceptionAsKj()'
/usr/bin/ld: test/CMakeFiles/mptest.dir/mp/test/foo.capnp.proxy-server.c++.o: in function `kj::Maybe<kj::Exception> kj::runCatchingExceptions<mp::PassField<mp::Accessor<mp::foo_fields::Context, 17>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackSharedParams, mp::test::messages::FooInterface::CallbackSharedResults> >, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > >, mp::TypeList<std::shared_ptr<mp::test::FooCallback>, int> >(mp::Priority<1>, mp::TypeList<>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackSharedParams, mp::test::messages::FooInterface::CallbackSharedResults> >&, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > > const&, mp::TypeList<std::shared_ptr<mp::test::FooCallback>, int>&&)::{lambda()#1}::operator()()::{lambda()#3}>(mp::PassField<mp::Accessor<mp::foo_fields::Context, 17>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackSharedParams, mp::test::messages::FooInterface::CallbackSharedResults> >, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > >, mp::TypeList<std::shared_ptr<mp::test::FooCallback>, int> >(mp::Priority<1>, mp::TypeList<>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackSharedParams, mp::test::messages::FooInterface::CallbackSharedResults> >&, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > > const&, mp::TypeList<std::shared_ptr<mp::test::FooCallback>, int>&&)::{lambda()#1}::operator()()::{lambda()#3}&&)':
foo.capnp.proxy-server.c++:(.text._ZN2kj21runCatchingExceptionsIZZN2mp9PassFieldINS1_8AccessorINS1_10foo_fields7ContextELi17EEENS1_19ServerInvokeContextINS1_11ProxyServerINS1_4test8messages12FooInterfaceEEEN5capnp11CallContextINSB_20CallbackSharedParamsENSB_21CallbackSharedResultsEEEEENS1_11ServerFieldILi1ENS3_INS4_8CallbackELi17EEENSJ_ILi1ENS3_INS4_3ArgELi1EEENS1_9ServerRetINS3_INS4_6ResultELi2EEENS1_10ServerCallEEEEEEEJNS1_8TypeListIJSt10shared_ptrINS9_11FooCallbackEEiEEEEEENSt9enable_ifIXsrSt7is_sameIDTclsrT_3getcldtdtfp1_12call_context9getParamsEEENS1_7Context6ReaderEE5valueENS_7PromiseINT0_11CallContextEEEE4typeENS1_8PriorityILi1EEENSV_IJEEERS18_RKT1_DpOT2_ENUlvE_clEvEUlvE1_EENS_5MaybeINS_9ExceptionEEEOS12_[_ZN2kj21runCatchingExceptionsIZZN2mp9PassFieldINS1_8AccessorINS1_10foo_fields7ContextELi17EEENS1_19ServerInvokeContextINS1_11ProxyServerINS1_4test8messages12FooInterfaceEEEN5capnp11CallContextINSB_20CallbackSharedParamsENSB_21CallbackSharedResultsEEEEENS1_11ServerFieldILi1ENS3_INS4_8CallbackELi17EEENSJ_ILi1ENS3_INS4_3ArgELi1EEENS1_9ServerRetINS3_INS4_6ResultELi2EEENS1_10ServerCallEEEEEEEJNS1_8TypeListIJSt10shared_ptrINS9_11FooCallbackEEiEEEEEENSt9enable_ifIXsrSt7is_sameIDTclsrT_3getcldtdtfp1_12call_context9getParamsEEENS1_7Context6ReaderEE5valueENS_7PromiseINT0_11CallContextEEEE4typeENS1_8PriorityILi1EEENSV_IJEEERS18_RKT1_DpOT2_ENUlvE_clEvEUlvE1_EENS_5MaybeINS_9ExceptionEEEOS12_]+0x52): undefined reference to `kj::getCaughtExceptionAsKj()'
/usr/bin/ld: test/CMakeFiles/mptest.dir/mp/test/foo.capnp.proxy-server.c++.o: in function `kj::Maybe<kj::Exception> kj::runCatchingExceptions<mp::PassField<mp::Accessor<mp::foo_fields::Context, 17>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::SaveCallbackParams, mp::test::messages::FooInterface::SaveCallbackResults> >, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerCall>, mp::TypeList<std::shared_ptr<mp::test::FooCallback> > >(mp::Priority<1>, mp::TypeList<>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::SaveCallbackParams, mp::test::messages::FooInterface::SaveCallbackResults> >&, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerCall> const&, mp::TypeList<std::shared_ptr<mp::test::FooCallback> >&&)::{lambda()#1}::operator()()::{lambda()#3}>(mp::PassField<mp::Accessor<mp::foo_fields::Context, 17>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::SaveCallbackParams, mp::test::messages::FooInterface::SaveCallbackResults> >, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerCall>, mp::TypeList<std::shared_ptr<mp::test::FooCallback> > >(mp::Priority<1>, mp::TypeList<>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::SaveCallbackParams, mp::test::messages::FooInterface::SaveCallbackResults> >&, mp::ServerField<1, mp::Accessor<mp::foo_fields::Callback, 17>, mp::ServerCall> const&, mp::TypeList<std::shared_ptr<mp::test::FooCallback> >&&)::{lambda()#1}::operator()()::{lambda()#3}&&)':
foo.capnp.proxy-server.c++:(.text._ZN2kj21runCatchingExceptionsIZZN2mp9PassFieldINS1_8AccessorINS1_10foo_fields7ContextELi17EEENS1_19ServerInvokeContextINS1_11ProxyServerINS1_4test8messages12FooInterfaceEEEN5capnp11CallContextINSB_18SaveCallbackParamsENSB_19SaveCallbackResultsEEEEENS1_11ServerFieldILi1ENS3_INS4_8CallbackELi17EEENS1_10ServerCallEEEJNS1_8TypeListIJSt10shared_ptrINS9_11FooCallbackEEEEEEEENSt9enable_ifIXsrSt7is_sameIDTclsrT_3getcldtdtfp1_12call_context9getParamsEEENS1_7Context6ReaderEE5valueENS_7PromiseINT0_11CallContextEEEE4typeENS1_8PriorityILi1EEENSO_IJEEERS11_RKT1_DpOT2_ENUlvE_clEvEUlvE1_EENS_5MaybeINS_9ExceptionEEEOSV_[_ZN2kj21runCatchingExceptionsIZZN2mp9PassFieldINS1_8AccessorINS1_10foo_fields7ContextELi17EEENS1_19ServerInvokeContextINS1_11ProxyServerINS1_4test8messages12FooInterfaceEEEN5capnp11CallContextINSB_18SaveCallbackParamsENSB_19SaveCallbackResultsEEEEENS1_11ServerFieldILi1ENS3_INS4_8CallbackELi17EEENS1_10ServerCallEEEJNS1_8TypeListIJSt10shared_ptrINS9_11FooCallbackEEEEEEEENSt9enable_ifIXsrSt7is_sameIDTclsrT_3getcldtdtfp1_12call_context9getParamsEEENS1_7Context6ReaderEE5valueENS_7PromiseINT0_11CallContextEEEE4typeENS1_8PriorityILi1EEENSO_IJEEERS11_RKT1_DpOT2_ENUlvE_clEvEUlvE1_EENS_5MaybeINS_9ExceptionEEEOSV_]+0x52): undefined reference to `kj::getCaughtExceptionAsKj()'
/usr/bin/ld: test/CMakeFiles/mptest.dir/mp/test/foo.capnp.proxy-server.c++.o: in function `kj::Maybe<kj::Exception> kj::runCatchingExceptions<mp::PassField<mp::Accessor<mp::foo_fields::Context, 17>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackSavedParams, mp::test::messages::FooInterface::CallbackSavedResults> >, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> >, mp::TypeList<int> >(mp::Priority<1>, mp::TypeList<>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackSavedParams, mp::test::messages::FooInterface::CallbackSavedResults> >&, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > const&, mp::TypeList<int>&&)::{lambda()#1}::operator()()::{lambda()#3}>(mp::PassField<mp::Accessor<mp::foo_fields::Context, 17>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackSavedParams, mp::test::messages::FooInterface::CallbackSavedResults> >, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> >, mp::TypeList<int> >(mp::Priority<1>, mp::TypeList<>, mp::ServerInvokeContext<mp::ProxyServer<mp::test::messages::FooInterface>, capnp::CallContext<mp::test::messages::FooInterface::CallbackSavedParams, mp::test::messages::FooInterface::CallbackSavedResults> >&, mp::ServerField<1, mp::Accessor<mp::foo_fields::Arg, 1>, mp::ServerRet<mp::Accessor<mp::foo_fields::Result, 2>, mp::ServerCall> > const&, mp::TypeList<int>&&)::{lambda()#1}::operator()()::{lambda()#3}&&)':
foo.capnp.proxy-server.c++:(.text._ZN2kj21runCatchingExceptionsIZZN2mp9PassFieldINS1_8AccessorINS1_10foo_fields7ContextELi17EEENS1_19ServerInvokeContextINS1_11ProxyServerINS1_4test8messages12FooInterfaceEEEN5capnp11CallContextINSB_19CallbackSavedParamsENSB_20CallbackSavedResultsEEEEENS1_11ServerFieldILi1ENS3_INS4_3ArgELi1EEENS1_9ServerRetINS3_INS4_6ResultELi2EEENS1_10ServerCallEEEEEJNS1_8TypeListIJiEEEEEENSt9enable_ifIXsrSt7is_sameIDTclsrT_3getcldtdtfp1_12call_context9getParamsEEENS1_7Context6ReaderEE5valueENS_7PromiseINT0_11CallContextEEEE4typeENS1_8PriorityILi1EEENSS_IJEEERS12_RKT1_DpOT2_ENUlvE_clEvEUlvE1_EENS_5MaybeINS_9ExceptionEEEOSW_[_ZN2kj21runCatchingExceptionsIZZN2mp9PassFieldINS1_8AccessorINS1_10foo_fields7ContextELi17EEENS1_19ServerInvokeContextINS1_11ProxyServerINS1_4test8messages12FooInterfaceEEEN5capnp11CallContextINSB_19CallbackSavedParamsENSB_20CallbackSavedResultsEEEEENS1_11ServerFieldILi1ENS3_INS4_3ArgELi1EEENS1_9ServerRetINS3_INS4_6ResultELi2EEENS1_10ServerCallEEEEEJNS1_8TypeListIJiEEEEEENSt9enable_ifIXsrSt7is_sameIDTclsrT_3getcldtdtfp1_12call_context9getParamsEEENS1_7Context6ReaderEE5valueENS_7PromiseINT0_11CallContextEEEE4typeENS1_8PriorityILi1EEENSS_IJEEERS12_RKT1_DpOT2_ENUlvE_clEvEUlvE1_EENS_5MaybeINS_9ExceptionEEEOSW_]+0x52): undefined reference to `kj::getCaughtExceptionAsKj()'
/usr/bin/ld: test/CMakeFiles/mptest.dir/mp/test/foo.capnp.proxy-server.c++.o:foo.capnp.proxy-server.c++:(.text._ZN2kj21runCatchingExceptionsIZZN2mp9PassFieldINS1_8AccessorINS1_10foo_fields7ContextELi17EEENS1_19ServerInvokeContextINS1_11ProxyServerINS1_4test8messages12FooInterfaceEEEN5capnp11CallContextINSB_22CallbackExtendedParamsENSB_23CallbackExtendedResultsEEEEENS1_11ServerFieldILi1ENS3_INS4_8CallbackELi17EEENSJ_ILi1ENS3_INS4_3ArgELi1EEENS1_9ServerRetINS3_INS4_6ResultELi2EEENS1_10ServerCallEEEEEEEJNS1_8TypeListIJRNS9_16ExtendedCallbackEiEEEEEENSt9enable_ifIXsrSt7is_sameIDTclsrT_3getcldtdtfp1_12call_context9getParamsEEENS1_7Context6ReaderEE5valueENS_7PromiseINT0_11CallContextEEEE4typeENS1_8PriorityILi1EEENSV_IJEEERS17_RKT1_DpOT2_ENUlvE_clEvEUlvE1_EENS_5MaybeINS_9ExceptionEEEOS11_[_ZN2kj21runCatchingExceptionsIZZN2mp9PassFieldINS1_8AccessorINS1_10foo_fields7ContextELi17EEENS1_19ServerInvokeContextINS1_11ProxyServerINS1_4test8messages12FooInterfaceEEEN5capnp11CallContextINSB_22CallbackExtendedParamsENSB_23CallbackExtendedResultsEEEEENS1_11ServerFieldILi1ENS3_INS4_8CallbackELi17EEENSJ_ILi1ENS3_INS4_3ArgELi1EEENS1_9ServerRetINS3_INS4_6ResultELi2EEENS1_10ServerCallEEEEEEEJNS1_8TypeListIJRNS9_16ExtendedCallbackEiEEEEEENSt9enable_ifIXsrSt7is_sameIDTclsrT_3getcldtdtfp1_12call_context9getParamsEEENS1_7Context6ReaderEE5valueENS_7PromiseINT0_11CallContextEEEE4typeENS1_8PriorityILi1EEENSV_IJEEERS17_RKT1_DpOT2_ENUlvE_clEvEUlvE1_EENS_5MaybeINS_9ExceptionEEEOS11_]+0x52): more undefined references to `kj::getCaughtExceptionAsKj()' follow
collect2: error: ld returned 1 exit status

[hebasto]

I built the updated devel/capnproto-1.2.0 from source and am still encountering the same errors.

[hebasto]

CI is green now. Undrafted.

[hebasto]

Assuming the netbsd job still fails, I guess there are different directions we may go with this issue:

• If it's possible to fix this with a change in libmultiprocess that would be ideal.

• If that's not possible, then maybe netbsd job could install from capnproto from source and we could report an issue to netbsd.

• If installing capnproto from source doesn't work, this will require a fix in capnproto.

And regardless of these, we may want to add a try_compile test and error with suggested workarounds along the lines of #205

Officially, GCC has supported the __has_feature extension since version 14. On NetBSD, however, GCC 10.5.0, which is used to build binary packages, already implements __has_feature, but __has_feature(cxx_exceptions) evaluates to false for some reason. This makes the following code problematic:https://github.com/capnproto/capnproto/blob/584db417ecf8377c7d8cd1099bf5fbccd57d68aa/c%2B%2B/src/kj/common.h#L154-L175

As a result, KJ_NO_EXCEPTIONS is defined to 1 by default. This behaviour is overridden in this PR.