make PythonAPI failure <error: reference to 'Server' is ambiguous> & <errof:reference to 'Client' is ambiguous>

[iscanGH]

Platform/OS: Ubuntu 20.04 clang: 8 Problem: ninja: build stopped: subcommand failed when running $ make PythonAPI to build Carla

Output looks like:

Setup.sh: llvm-8.0 already installed.
Setup.sh: boost-1.72.0-c8 already installed.
Setup.sh: rpclib-v2.2.1_c5-c8 already installed.
Setup.sh: gtest-1.8.1-c8 already installed.
Setup.sh: recast-0b13b0-c8 already installed.
Setup.sh: Libpng already installed.
Setup.sh: Xerces-c already installed.
Setup.sh: Sqlite already installed.
Setup.sh: PROJ already installed.
Setup.sh: Patchelf already installed.
Setup.sh: CARLA version 0.9.13-1-g8854804f-dirty.
Setup.sh: Generating CMake configuration files.
Setup.sh: Success!
BuildLibCarla.sh: Building LibCarla "Client.Release" configuration.
[40/122] Building CXX object LibCarla/.../opendrive/parser/GeometryParser.cpp.o
../../LibCarla/source/carla/opendrive/parser/GeometryParser.cpp:118:21: warning: loop variable 'geo' of type 'const carla::opendrive::parser::Geometry' creates a copy from type 'const carla::opendrive::parser::Geometry' [-Wrange-loop-construct]
    for (auto const geo : geometry) {
                    ^
../../LibCarla/source/carla/opendrive/parser/GeometryParser.cpp:118:10: note: use reference type 'const carla::opendrive::parser::Geometry &' to prevent copying
    for (auto const geo : geometry) {
         ^~~~~~~~~~~~~~~~
                    &
1 warning generated.
[41/122] Building CXX object LibCarla/...ce/carla/client/detail/Simulator.cpp.o
../../LibCarla/source/carla/client/detail/Simulator.cpp:161:56: warning: implicit conversion changes signedness: 'int' to 'std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::size_type' (aka 'unsigned long') [-Wsign-conversion]
        if (fill_base_string == false && map_info.name[i] != '/') {
                                         ~~~~~~~~      ^
../../LibCarla/source/carla/client/detail/Simulator.cpp:162:37: warning: implicit conversion changes signedness: 'int' to 'std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::size_type' (aka 'unsigned long') [-Wsign-conversion]
          map_name += map_info.name[i];
                      ~~~~~~~~      ^
../../LibCarla/source/carla/client/detail/Simulator.cpp:164:42: warning: implicit conversion changes signedness: 'int' to 'std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::size_type' (aka 'unsigned long') [-Wsign-conversion]
          map_base_path += map_info.name[i];
                           ~~~~~~~~      ^
../../LibCarla/source/carla/client/detail/Simulator.cpp:160:41: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
      for (int i = map_info.name.size() - 1; i >= 0; --i) {
               ~   ~~~~~~~~~~~~~~~~~~~~~^~~
4 warnings generated.
[49/122] Building CXX object LibCarla/...arla/opendrive/parser/RoadParser.cpp.o
../../LibCarla/source/carla/opendrive/parser/RoadParser.cpp:299:23: warning: loop variable 's' of type 'const carla::opendrive::parser::RoadTypeSpeed' creates a copy from type 'const carla::opendrive::parser::RoadTypeSpeed' [-Wrange-loop-construct]
      for (auto const s : r.speed) {
                      ^
../../LibCarla/source/carla/opendrive/parser/RoadParser.cpp:299:12: note: use reference type 'const carla::opendrive::parser::RoadTypeSpeed &' to prevent copying
      for (auto const s : r.speed) {
           ^~~~~~~~~~~~~~
                      &
../../LibCarla/source/carla/opendrive/parser/RoadParser.cpp:310:23: warning: loop variable 's' of type 'const carla::opendrive::parser::LaneSection' creates a copy from type 'const carla::opendrive::parser::LaneSection' [-Wrange-loop-construct]
      for (auto const s : r.sections) {
                      ^
../../LibCarla/source/carla/opendrive/parser/RoadParser.cpp:310:12: note: use reference type 'const carla::opendrive::parser::LaneSection &' to prevent copying
      for (auto const s : r.sections) {
           ^~~~~~~~~~~~~~
                      &
../../LibCarla/source/carla/opendrive/parser/RoadParser.cpp:290:21: warning: loop variable 'r' of type 'const carla::opendrive::parser::Road' creates a copy from type 'const carla::opendrive::parser::Road' [-Wrange-loop-construct]
    for (auto const r : roads) {
                    ^
../../LibCarla/source/carla/opendrive/parser/RoadParser.cpp:290:10: note: use reference type 'const carla::opendrive::parser::Road &' to prevent copying
    for (auto const r : roads) {
         ^~~~~~~~~~~~~~
                    &
3 warnings generated.
[64/122] Building CXX object LibCarla/.../__/source/carla/road/MapBuilder.cpp.o
../../LibCarla/source/carla/road/MapBuilder.cpp:292:46: warning: implicit conversion loses floating-point precision: 'const double' to 'float' [-Wimplicit-float-conversion]
    geom::Location location = geom::Location(x, -y, z);
                              ~~~~           ^
../../LibCarla/source/carla/road/MapBuilder.cpp:292:49: warning: implicit conversion loses floating-point precision: 'double' to 'float' [-Wimplicit-float-conversion]
    geom::Location location = geom::Location(x, -y, z);
                              ~~~~              ^~
../../LibCarla/source/carla/road/MapBuilder.cpp:292:53: warning: implicit conversion loses floating-point precision: 'const double' to 'float' [-Wimplicit-float-conversion]
    geom::Location location = geom::Location(x, -y, z);
                              ~~~~                  ^
3 warnings generated.
[69/122] Building CXX object LibCarla/...urce/carla/road/element/Geometry.cpp.o
../../LibCarla/source/carla/road/element/Geometry.cpp:196:28: warning: implicit conversion from 'size_t' (aka 'unsigned long') to 'double' may lose precision [-Wimplicit-int-float-conversion]
    double delta_p = 1.0 / number_intervals;
                         ~ ^~~~~~~~~~~~~~~~
1 warning generated.
[97/122] Building CXX object LibCarla/...trafficmanager/LocalizationStage.cpp.o
../../LibCarla/source/carla/trafficmanager/LocalizationStage.cpp:198:73: warning: implicit conversion from 'std::vector::size_type' (aka 'unsigned long') to 'double' may lose precision [-Wimplicit-int-float-conversion]
        selection_index = static_cast<uint64_t>(r_sample*next_waypoints.size()*0.01);
                                                        ~~~~~~~~~~~~~~~~^~~~~~
../../LibCarla/source/carla/trafficmanager/LocalizationStage.cpp:474:65: warning: implicit conversion from 'unsigned int' to 'const float' may lose precision [-Wimplicit-int-float-conversion]
        const float imported_road_id = imported->GetWaypoint()->GetRoadId();
                    ~~~~~~~~~~~~~~~~   ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
../../LibCarla/source/carla/trafficmanager/LocalizationStage.cpp:487:66: warning: implicit conversion from 'unsigned int' to 'float' may lose precision [-Wimplicit-int-float-conversion]
          float jep_road_id = junction_end_point->GetWaypoint()->GetRoadId();
                ~~~~~~~~~~~   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
3 warnings generated.
[107/122] Building CXX object LibCarla...__/source/test/client/test_image.cpp.o
../../LibCarla/source/test/client/test_image.cpp:83:45: warning: implicit conversion from 'unsigned int' to 'const float' may lose precision [-Wimplicit-int-float-conversion]
          const float depth = r + (g * 256) + (b  * 256 * 256);
                      ~~~~~   ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
1 warning generated.
[115/122] Building CXX object LibCarla...ource/test/common/test_streaming.cpp.o
FAILED: LibCarla/cmake/test/CMakeFiles/libcarla_test_client_release.dir/__/__/source/test/common/test_streaming.cpp.o 
/bin/clang++-10  -DBOOST_ERROR_CODE_HEADER_ONLY -DLIBCARLA_ENABLE_PROFILER -DLIBCARLA_IMAGE_WITH_PNG_SUPPORT=true -DLIBCARLA_TEST_CONTENT_FOLDER=\"/home/arrb6005/carla/Build/test-content\" -DLIBCARLA_WITH_GTEST -I../../LibCarla/cmake/../source -I../../LibCarla/cmake/../source/third-party -I../../LibCarla/cmake/../source/test -isystem ../boost-1.72.0-c8-install/include -isystem ../rpclib-v2.2.1_c5-c8-libstdcxx-install/include -isystem ../gtest-1.8.1-c8-libstdcxx-install/include -isystem ../libpng-1.6.37-install/include -std=c++14 -pthread -fPIC -Wall -Wextra -Wpedantic -Wdeprecated -Wshadow -Wuninitialized -Wunreachable-code -Wpessimizing-move -Wold-style-cast -Wnull-dereference -Wduplicate-enum -Wnon-virtual-dtor -Wheader-hygiene -Wconversion -Wfloat-overflow-conversion -std=c++14 -pthread -fPIC -Wall -Wextra -Wpedantic -Wdeprecated -Wshadow -Wuninitialized -Wunreachable-code -Wpessimizing-move -Wold-style-cast -Wnull-dereference -Wduplicate-enum -Wnon-virtual-dtor -Wheader-hygiene -Wconversion -Wfloat-overflow-conversion   -O3 -DNDEBUG -MD -MT LibCarla/cmake/test/CMakeFiles/libcarla_test_client_release.dir/__/__/source/test/common/test_streaming.cpp.o -MF LibCarla/cmake/test/CMakeFiles/libcarla_test_client_release.dir/__/__/source/test/common/test_streaming.cpp.o.d -o LibCarla/cmake/test/CMakeFiles/libcarla_test_client_release.dir/__/__/source/test/common/test_streaming.cpp.o -c ../../LibCarla/source/test/common/test_streaming.cpp
../../LibCarla/source/test/common/test_streaming.cpp:58:3: error: reference to 'Server' is ambiguous
  Server<tcp::Server> srv(io.service, TESTING_PORT);
  ^
../../LibCarla/cmake/../source/carla/streaming/Server.h:20:9: note: candidate found by name lookup is 'carla::streaming::Server'
  class Server {
        ^
../../LibCarla/cmake/../source/carla/streaming/low_level/Server.h:25:9: note: candidate found by name lookup is 'carla::streaming::low_level::Server'
  class Server {
        ^
../../LibCarla/source/test/common/test_streaming.cpp:63:3: error: reference to 'Client' is ambiguous
  Client<tcp::Client> c;
  ^
../../LibCarla/cmake/../source/carla/streaming/Client.h:23:9: note: candidate found by name lookup is 'carla::streaming::Client'
  class Client {
        ^
../../LibCarla/cmake/../source/carla/streaming/low_level/Client.h:27:9: note: candidate found by name lookup is 'carla::streaming::low_level::Client'
  class Client {
        ^
../../LibCarla/source/test/common/test_streaming.cpp:93:3: error: reference to 'Server' is ambiguous
  Server<tcp::Server> srv(io.service, TESTING_PORT);
  ^
../../LibCarla/cmake/../source/carla/streaming/Server.h:20:9: note: candidate found by name lookup is 'carla::streaming::Server'
  class Server {
        ^
../../LibCarla/cmake/../source/carla/streaming/low_level/Server.h:25:9: note: candidate found by name lookup is 'carla::streaming::low_level::Server'
  class Server {
        ^
../../LibCarla/source/test/common/test_streaming.cpp:96:3: error: reference to 'Client' is ambiguous
  Client<tcp::Client> c;
  ^
../../LibCarla/cmake/../source/carla/streaming/Client.h:23:9: note: candidate found by name lookup is 'carla::streaming::Client'
  class Client {
        ^
../../LibCarla/cmake/../source/carla/streaming/low_level/Client.h:27:9: note: candidate found by name lookup is 'carla::streaming::low_level::Client'
  class Client {
        ^
4 errors generated.
[116/122] Building CXX object LibCarla...ource/test/client/test_opendrive.cpp.o
../../LibCarla/source/test/client/test_opendrive.cpp:372:42: warning: implicit conversion from 'size_t' (aka 'unsigned long') to 'float' may lose precision [-Wimplicit-int-float-conversion]
      float seconds = 1e-3f * stop_watch.GetElapsedTime();
                            ~ ~~~~~~~~~~~^~~~~~~~~~~~~~~~
../../LibCarla/source/test/client/test_opendrive.cpp:419:42: warning: implicit conversion from 'size_t' (aka 'unsigned long') to 'float' may lose precision [-Wimplicit-int-float-conversion]
      float seconds = 1e-3f * stop_watch.GetElapsedTime();
                            ~ ~~~~~~~~~~~^~~~~~~~~~~~~~~~
2 warnings generated.
[120/122] Building CXX object LibCarla...afficmanager/TrafficManagerLocal.cpp.o
ninja: build stopped: subcommand failed.
make: *** [Util/BuildTools/Linux.mk:124: LibCarla.client.release] Error 1

I guess the problem is that I had installed clang 11, but I cannot install clang 8 as I get following error The following packages have unmet dependencies: clang-8 : Depends: libllvm8 (>= 1:8~svn298832-1~) but it is not going to be installed Depends: libclang-common-8-dev (= 1:8.0.1+svn369350-1~exp1~20200114191400.80) but it is not going to be installed Depends: libclang1-8 (= 1:8.0.1+svn369350-1~exp1~20200114191400.80) but it is not going to be installed Recommends: llvm-8-dev but it is not going to be installed lld-8 : Depends: libllvm8 (= 1:8.0.1+svn369350-1~exp1~20200114191400.80) but it is not going to be installed E: Unable to correct problems, you have held broken packages.

Any hint & advice on how can I fix it would be really appreciated

[armando-fandango]

Getting the same error.

[dpresence]

same error here

[henryzhuhr]

same error here ,how to solve

[PatrickFSLin]

same error here, no solution?

[wutianze]

same error, I used clang-10, also failed

[wutianze]

One possible solution is to use clang 8 instead. Remember to remove "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-8 main" from /etc/apt/sources.list, or you will be unable to install clang 8 in 20.04

[gufenglcy]

got the same error, I am using clang-10, According to guide clang-10 is support in 20.04 for carla.

[hengcong]

I solved this problem by adding 'carla::streaming::low_level' before every ambiguous 'Server' and 'Client'. Actually, it refers to confusion about the definitions of 'Server' and 'Client' since it introduces several definitions in this test_streaming.cpp file. So, give it a namespace to specify the definition that it needs to call.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[Derkai52]

same error here, no solution?