Qt6 protobuf generated files are different to protoc

[Poldi]

I have started to convert my cmake file to use Qt6 Protobuf to generate c++ code instead of the installed (Ubuntu) and have run into a few issues

1. The file name extension is no longer pb.h and pb.cpp. It's qpb.h and qpb.cpp
2. The code that used to compile and run now gives me the following compilation error
   No member named 'ParseFromArray' in 'nw::remote::Message'

Part of my header

nw::remote::Message* msg_;
QTcpSocket* socket_;
qint64 bytes_in_;
QByteArray msg_stream_;
qint32 msg_type_;

Part of the code

void NetworkRemoteIncomingMsg::SetMsgType() {
  msg_string_ = msg_stream_.toStdString();
  msg_->ParseFromString(msg_string_);
  Q_EMIT InMsgParsed();
}

[SGaist]

Hi,

Can you provide a minimal project that shows that issue ?
Which version of Qt are you using ?

[Poldi]

Here is the system info
Qt 6.8.3 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 10.3.1 20210422 (Red Hat 10.3.1-1)) on "xcb"
OS: Ubuntu 24.04.2 LTS [linux version 6.8.0-59-generic]

[Poldi]

I've moved on from this and have changed my code. One issue I have is that

#include <QProtobufSerializer>
gives this error
fatal error: QProtobufSerializer: No such file or directory

cmake is
find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Protobuf)
if(Qt6Protobuf_FOUND)
message(STATUS "Using Qt6's Protobuf")
set(Protobuf_LIBRARIES Qt${QT_VERSION_MAJOR}::Protobuf)
else()
message(FATAL_ERROR "Missing Qt Protobuf compiler.")
endif()
set(PROTO_SOURCES RemoteMessages.proto)

add_library(lib-networkremote STATIC)

qt_add_protobuf(lib-networkremote
PROTO_FILES ${PROTO_SOURCES}
)

target_sources(lib-networkremote PRIVATE
incomingmsg.cpp
incomingmsg.h
outgoingmsg.cpp
outgoingmsg.h
)

Include directories

target_include_directories(lib-networkremote PRIVATE
${CMAKE_CURRENT_SOURCE_DIR}
${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_SOURCE_DIR}/src
${CMAKE_BINARY_DIR}/src
)

Link against required libraries

target_link_libraries(lib-networkremote PRIVATE
${GLIB_LIBRARIES}
Qt${QT_VERSION_MAJOR}::Core
Qt${QT_VERSION_MAJOR}::Network
Qt${QT_VERSION_MAJOR}::Gui
)

[jsulm]

@Poldi You are not linking Qt protobuf module.
And please format your code properly.

[Poldi]

Thanks and apologies