Build failure on macOS 15: Undefined symbols for architecture arm64

[i0ntempest]

Full log below.

:info:build cd /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_net_openvpn3/openvpn3/work/build/test/unittests && /opt/local/bin/cmake -E cmake_link_script CMakeFiles/coreUnitTests.dir/link.txt --verbose=ON
:info:build /usr/bin/clang++ -pipe -I/opt/local/libexec/openssl3/include -Os -DNDEBUG -I/opt/local/libexec/openssl3/include -isystem/opt/local/include -stdlib=libc++ -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk -arch arm64 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk -mmacosx-version-min=15.0 -Wl,-search_paths_first -Wl,-headerpad_max_install_names -L/opt/local/libexec/openssl3/lib -L/opt/local/lib -Wl,-headerpad_max_install_names -Wl,-ld_classic -Wl,-syslibroot,/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk CMakeFiles/coreUnitTests.dir/core_tests.cpp.o CMakeFiles/coreUnitTests.dir/test_acc.cpp.o CMakeFiles/coreUnitTests.dir/test_acc_certcheck.cpp.o CMakeFiles/coreUnitTests.dir/test_route_emulation.cpp.o CMakeFiles/coreUnitTests.dir/test_log.cpp.o CMakeFiles/coreUnitTests.dir/test_comp.cpp.o CMakeFiles/coreUnitTests.dir/test_b64.cpp.o CMakeFiles/coreUnitTests.dir/test_verify_x509_name.cpp.o CMakeFiles/coreUnitTests.dir/test_ssl.cpp.o CMakeFiles/coreUnitTests.dir/test_sslctx.cpp.o CMakeFiles/coreUnitTests.dir/test_continuation.cpp.o CMakeFiles/coreUnitTests.dir/test_crypto.cpp.o CMakeFiles/coreUnitTests.dir/test_optfilt.cpp.o CMakeFiles/coreUnitTests.dir/test_clamp_typerange.cpp.o CMakeFiles/coreUnitTests.dir/test_pktstream.cpp.o CMakeFiles/coreUnitTests.dir/test_remotelist.cpp.o CMakeFiles/coreUnitTests.dir/test_relack.cpp.o CMakeFiles/coreUnitTests.dir/test_http_proxy.cpp.o CMakeFiles/coreUnitTests.dir/test_peer_fingerprint.cpp.o CMakeFiles/coreUnitTests.dir/test_safestr.cpp.o CMakeFiles/coreUnitTests.dir/test_numeric_cast.cpp.o CMakeFiles/coreUnitTests.dir/test_dns.cpp.o CMakeFiles/coreUnitTests.dir/test_header_deps.cpp.o CMakeFiles/coreUnitTests.dir/test_capture.cpp.o CMakeFiles/coreUnitTests.dir/test_cleanup.cpp.o CMakeFiles/coreUnitTests.dir/test_crypto_hashstr.cpp.o CMakeFiles/coreUnitTests.dir/test_csum.cpp.o CMakeFiles/coreUnitTests.dir/test_format.cpp.o CMakeFiles/coreUnitTests.dir/test_headredact.cpp.o CMakeFiles/coreUnitTests.dir/test_hostport.cpp.o CMakeFiles/coreUnitTests.dir/test_ip.cpp.o CMakeFiles/coreUnitTests.dir/test_ostream_containers.cpp.o CMakeFiles/coreUnitTests.dir/test_parseargv.cpp.o CMakeFiles/coreUnitTests.dir/test_path.cpp.o CMakeFiles/coreUnitTests.dir/test_pktid.cpp.o CMakeFiles/coreUnitTests.dir/test_prefixlen.cpp.o CMakeFiles/coreUnitTests.dir/test_randapi.cpp.o CMakeFiles/coreUnitTests.dir/test_rc.cpp.o CMakeFiles/coreUnitTests.dir/test_route.cpp.o CMakeFiles/coreUnitTests.dir/test_reliable.cpp.o CMakeFiles/coreUnitTests.dir/test_splitlines.cpp.o CMakeFiles/coreUnitTests.dir/test_statickey.cpp.o CMakeFiles/coreUnitTests.dir/test_streq.cpp.o CMakeFiles/coreUnitTests.dir/test_time.cpp.o CMakeFiles/coreUnitTests.dir/test_typeindex.cpp.o CMakeFiles/coreUnitTests.dir/test_tun_builder.cpp.o CMakeFiles/coreUnitTests.dir/test_userpass.cpp.o CMakeFiles/coreUnitTests.dir/test_validatecreds.cpp.o CMakeFiles/coreUnitTests.dir/test_weak.cpp.o CMakeFiles/coreUnitTests.dir/test_cliopt.cpp.o CMakeFiles/coreUnitTests.dir/test_buffer.cpp.o CMakeFiles/coreUnitTests.dir/test_proto.cpp.o CMakeFiles/coreUnitTests.dir/test_openssl_x509certinfo.cpp.o CMakeFiles/coreUnitTests.dir/test_openssl_authcert.cpp.o CMakeFiles/coreUnitTests.dir/test_opensslpki.cpp.o CMakeFiles/coreUnitTests.dir/test_openssl_misc.cpp.o CMakeFiles/coreUnitTests.dir/test_session_id.cpp.o CMakeFiles/coreUnitTests.dir/test_buffer_ip.cpp.o CMakeFiles/coreUnitTests.dir/test_cpu_time.cpp.o CMakeFiles/coreUnitTests.dir/test_misc_unix.cpp.o CMakeFiles/coreUnitTests.dir/test_pipe.cpp.o CMakeFiles/coreUnitTests.dir/test_psid_cookie.cpp.o -o coreUnitTests  -Wl,-rpath,/opt/local/lib /opt/local/lib/liblz4.dylib /opt/local/libexec/openssl3/lib/libssl.dylib -framework CoreFoundation -framework IOKit -framework CoreServices -framework SystemConfiguration -lpthread /opt/local/lib/liblzo2.dylib ../../lib/libgtest_main.a ../../lib/libgmock.a /opt/local/libexec/openssl3/lib/libcrypto.dylib /opt/local/lib/libjsoncpp.a ../../lib/libgtest.a
:info:build ld: warning: -ld_classic is deprecated and will be removed in a future release
:info:build Undefined symbols for architecture arm64:
:info:build   "testing::internal::MakeAndRegisterTestInfo(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>, char const*, char const*, char const*, testing::internal::CodeLocation, void const*, void (*)(), void (*)(), testing::internal::TestFactoryBase*)", referenced from:
:info:build       __GLOBAL__sub_I_test_acc.cpp in test_acc.cpp.o
:info:build       __GLOBAL__sub_I_test_acc_certcheck.cpp in test_acc_certcheck.cpp.o
:info:build       __GLOBAL__sub_I_test_route_emulation.cpp in test_route_emulation.cpp.o
:info:build       __GLOBAL__sub_I_test_log.cpp in test_log.cpp.o
:info:build       __GLOBAL__sub_I_test_comp.cpp in test_comp.cpp.o
:info:build       __GLOBAL__sub_I_test_b64.cpp in test_b64.cpp.o
:info:build       __GLOBAL__sub_I_test_verify_x509_name.cpp in test_verify_x509_name.cpp.o
:info:build       ...
:info:build   "testing::internal::ReportInvalidTestSuiteType(char const*, testing::internal::CodeLocation const&)", referenced from:
:info:build       testing::internal::ParameterizedTestSuiteInfo<InvalidConfigs>* testing::internal::ParameterizedTestSuiteRegistry::GetTestSuitePatternHolder<InvalidConfigs>(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>, testing::internal::CodeLocation) in test_cliopt.cpp.o
:info:build       testing::internal::ParameterizedTestSuiteInfo<ValidConfigs>* testing::internal::ParameterizedTestSuiteRegistry::GetTestSuitePatternHolder<ValidConfigs>(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>, testing::internal::CodeLocation) in test_cliopt.cpp.o
:info:build ld: symbol(s) not found for architecture arm64
:info:build clang++: error: linker command failed with exit code 1 (use -v to see invocation)
:info:build make[2]: *** [test/unittests/coreUnitTests] Error 1
:info:build make[2]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_net_openvpn3/openvpn3/work/build'
:info:build make[1]: *** [test/unittests/CMakeFiles/coreUnitTests.dir/all] Error 2
:info:build make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_net_openvpn3/openvpn3/work/build'
:info:build make: *** [all] Error 2

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