Confusing "Library not loaded" error on macOS.

[davidspry]

Hello.

I'm trying to build and run a Qt project on macOS.

The project was originally written for Linux, and it works on Linux with Qt5.

I've been able to get the project to build on macOS with Qt6, but when I try to run the executable I see a 'Library not loaded' error, which either says

dyld: Library not loaded: @rpath/QtPrintSupport.framework/Versions/5/QtPrintSupport
  Referenced from: /Users/davidspry/Documents/Qt/6.0.3/clang_64/lib/QtWebKitWidgets.framework/Versions/5/QtWebKitWidgets
  Reason: image not found

or

dyld: Library not loaded: @rpath/QtMultimediaWidgets.framework/Versions/5/QtMultimediaWidgets
  Referenced from: /Users/davidspry/Documents/Qt/6.0.3/clang_64/lib/QtWebKitWidgets.framework/Versions/5/QtWebKitWidgets
  Reason: image not found

However, I don't believe that the project uses the 'Multimedia Widgets' module. Here is the .pro file:

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

QT += core gui
QT += webkit
QT += webkitwidgets
QT += printsupport
QT += network
QT += gui

TARGET = hiped
CONFIG += console
CONFIG -= app_bundle

TEMPLATE = app

SOURCES += main.cpp \
    keylist.cpp \
    connection.cpp \
    connectionmanager.cpp \
    container.cpp \
    containerframe.cpp \
    containertoplevel.cpp \
    hipe_instruction.c \
    common.c \
    sanitation.cpp \
    instructionhandler.cpp

HEADERS += main.hpp \
    ExpArray.hh \
    keylist.h \
    common.h \
    connection.h \
    connectionmanager.h \
    container.h \
    containerframe.h \
    containertoplevel.h \
    hipe_instruction.h \
    sanitation.h \
    instructionhandler.h

QMAKE_CXXFLAGS += -std=c++17 -O3 -pthread
LIBS += -pthread

Can anyone suggest a way for me to get this working?

Thank you.

[jsulm]

@davidspry said in Confusing "Library not loaded" error on macOS.:

I don't believe that the project uses the 'Multimedia Widgets' module

From the error message you can see that QtWebKitWidgets needs it.

Do you start your project from QtCreator or manually from Finder/terminal?

[davidspry]

Ok, I see. If QtWebKitWidgets depends on QtMultimediaWidgets, then my version of Qt (6.0.3) may be the issue. As I understand it, Qt 6.0 doesn't include QtMultimedia. I'll install Qt5 and see how that goes.

As for starting the project, I've tried building from Terminal and from QtCreator. In both cases the project builds successfully but crashes when it's run.

[jsulm]

@davidspry said in Confusing "Library not loaded" error on macOS.:

Qt 6.0 doesn't include QtMultimedia

This is correct