protozero fails to build with devel/protobuf >= 3.19 because it builds with -pedantic -std=c++11 -Werror and because newer protobuf has this
#if __has_cpp_attribute(nodiscard) #define PROTOBUF_NODISCARD [[nodiscard]] ... For some reason, __has_cpp_attribute(nodiscard) is true even with -std=c++11, which then leads to this warning/error: test/t/bytes/bytes_testcase.pb.h:190:3: error: use of the 'nodiscard' attribute is a C++17 exte nsion [-Werror,-Wc++17-extensions] A similar issue was reported e.g., here: https://github.com/nlohmann/json/issues/1535 With the workaround below, the three ports dependent on devel/protozero geo/libosmium geo/osm2pgsql geo/osrm-backend build fine with protobuf 3.19.1. I can also send an update to protozero 1.7.0 if there is interest. Index: Makefile =================================================================== RCS file: /cvs/ports/devel/protozero/Makefile,v retrieving revision 1.4 diff -u -p -r1.4 Makefile --- Makefile 12 Jul 2019 20:45:16 -0000 1.4 +++ Makefile 2 Nov 2021 19:27:28 -0000 @@ -14,6 +14,8 @@ PERMIT_PACKAGE = Yes COMPILER = base-clang ports-gcc ports-clang +CONFIGURE_ARGS = -DWERROR=NO + MODULES = devel/cmake BUILD_DEPENDS = devel/protobuf
