Hi, Joined on another project that's heavily using Protobuf (Apache Arrow) and running into strange macro-and-other-symbol visibility issues when I'm including generated Protobuf headers in more source files (e.g. in application headers). I'm guessing this may be a more common general problem but I didn't find anything similar enough to the issues I'm encountering when searching for similar errors. For example I'm seeing (truncated as things get less interesting and somewhat repetitive down the log):
/opt/homebrew/bin/ccache /Library/Developer/CommandLineTools/usr/bin/c++ -DARROW_EXTRA_ERROR_CONTEXT -DARROW_FLIGHT_SQL_EXPORTING -DARROW_HAVE_NEON -DARROW_WITH_RE2 -DARROW_WITH_TIMING_TESTS -DARROW_WITH_ZLIB -DGRPC_NAMESPACE_FOR_TLS_CREDENTIALS_OPTIONS=grpc::experimental -DGRPC_USE_CERTIFICATE_VERIFIER -DGRPC_USE_TLS_CHANNEL_CREDENTIALS_OPTIONS -DURI_STATIC_BUILD -I/Users/pauln/bq/git/arrow/cpp/session-managemen-build-debug/src -I/Users/pauln/bq/git/arrow/cpp/src -I/Users/pauln/bq/git/arrow/cpp/src/generated -isystem /opt/homebrew/include -isystem /Users/pauln/bq/git/arrow/cpp/thirdparty/flatbuffers/include -isystem /Users/pauln/bq/git/arrow/cpp/thirdparty/hadoop/include -isystem /opt/homebrew/opt/[email protected]/include -isystem /Users/pauln/bq/git/arrow/cpp/session-managemen-build-debug/jemalloc_ep-prefix/src -fno-aligned-new -Qunused-arguments -fcolor-diagnostics -Wall -Wextra -Wdocumentation -Wshorten-64-to-32 -Wno-missing-braces -Wno-unused-parameter -Wno-constant-logical-operand -Wno-return-stack-address -Wno-unknown-warning-option -Wno-pass-failed -march=armv8-a -g -Werror -O0 -ggdb -arch arm64 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk -fPIC -std=c++17 -MD -MT src/arrow/flight/sql/CMakeFiles/arrow_flight_sql_objlib.dir/client.cc.o -MF src/arrow/flight/sql/CMakeFiles/arrow_flight_sql_objlib.dir/client.cc.o.d -o src/arrow/flight/sql/CMakeFiles/arrow_flight_sql_objlib.dir/client.cc.o -c /Users/pauln/bq/git/arrow/cpp/src/arrow/flight/sql/client.cc In file included from /Users/pauln/bq/git/arrow/cpp/src/arrow/flight/sql/client.cc:22: In file included from /Users/pauln/bq/git/arrow/cpp/src/arrow/flight/sql/client.h:24: /Users/pauln/bq/git/arrow/cpp/session-managemen-build-debug/src/arrow/flight/sql/FlightSql.pb.h:47:3: error: expected expression static const uint32_t offsets[]; ^ /Users/pauln/bq/git/arrow/cpp/session-managemen-build-debug/src/arrow/flight/sql/FlightSql.pb.h:46:32: error: variable has incomplete type 'struct ARROW_FLIGHT_SQL_EXPORT' struct ARROW_FLIGHT_SQL_EXPORT TableStruct_FlightSql_2eproto { ^ /Users/pauln/bq/git/arrow/cpp/session-managemen-build-debug/src/arrow/flight/sql/FlightSql.pb.h:46:8: note: forward declaration of 'ARROW_FLIGHT_SQL_EXPORT' struct ARROW_FLIGHT_SQL_EXPORT TableStruct_FlightSql_2eproto { ^ /Users/pauln/bq/git/arrow/cpp/session-managemen-build-debug/src/arrow/flight/sql/FlightSql.pb.h:49:73: error: no member named 'DescriptorTable' in namespace 'google::protobuf::internal' ARROW_FLIGHT_SQL_EXPORT extern const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_FlightSql_2eproto; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^ /Users/pauln/bq/git/arrow/cpp/session-managemen-build-debug/src/arrow/flight/sql/FlightSql.pb.h:49:88: error: expected ';' after top level declarator ARROW_FLIGHT_SQL_EXPORT extern const ::PROTOBUF_NAMESPACE_ID::internal::DescriptorTable descriptor_table_FlightSql_2eproto; [...] Thanks in advance for any insight! Cheers ~Paul -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/protobuf/37530cbb-e951-44c8-82a4-40716feb97een%40googlegroups.com.
