Errors in deploying Mac app using macdeployqt

yyang005

I try to run macdeployqt to deploy my qt application on mac. I got the following error message:

ERROR: Unexpected prefix "@loader_path"
ERROR: Unexpected prefix "@loader_path"
ERROR: Unexpected prefix "@loader_path"
ERROR: Unexpected prefix "@loader_path"
ERROR: Unexpected prefix "@loader_path"
ERROR: Unexpected prefix "@loader_path"
ERROR: Unexpected prefix "@loader_path"
ERROR: Unexpected prefix "@loader_path"
ERROR: Unexpected prefix "@loader_path"
File exists, skip copy: "sample.app/Contents/PlugIns/platforms/libqcocoa.dylib"
File exists, skip copy: "sample.app/Contents/PlugIns/printsupport/libcocoaprintersupport.dylib"
File exists, skip copy: "sample.app/Contents/PlugIns/imageformats/libqdds.dylib"
File exists, skip copy: "sample.app/Contents/PlugIns/imageformats/libqgif.dylib"
File exists, skip copy: "sample.app/Contents/PlugIns/imageformats/libqicns.dylib"
File exists, skip copy: "sample.app/Contents/PlugIns/imageformats/libqico.dylib"
File exists, skip copy: "sample.app/Contents/PlugIns/imageformats/libqjpeg.dylib"
File exists, skip copy: "sample.app/Contents/PlugIns/imageformats/libqtga.dylib"
File exists, skip copy: "sample.app/Contents/PlugIns/imageformats/libqtiff.dylib"
File exists, skip copy: "sample.app/Contents/PlugIns/imageformats/libqwbmp.dylib"
File exists, skip copy: "sample.app/Contents/PlugIns/imageformats/libqwebp.dylib"
WARNING:
WARNING: "sample.app/Contents/Resources/qt.conf" already exists, will not overwrite.
WARNING: To make sure the plugins are loaded from the correct location,
WARNING: please make sure qt.conf contains the following lines:
WARNING: [Paths]
WARNING: Plugins = PlugIns

My Qt version is 5.12.0
Does anyone know how to resolve it? Thanks.

SGaist

Hi and welcome to devnet,

Are you getting that the first time you run macdeployqt on your application bundle ?
What does your .pro file look like ?

yyang005

Not sure if I'm getting that the first time I run macdeployqt. I have ran it several times, the errors are the same.

Here is my .pro file,

QT       += core gui
QT       += xml

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = sample
TEMPLATE = app

# The following define makes your compiler emit warnings if you use
# any feature of Qt which has been marked as deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

CONFIG += c++11

SOURCES += \
        main.cpp \
        mainwindow.cpp \
    actionlistdialog.cpp \
    customtreewidget.cpp \
    filterparameters.cpp \
    actionlist.cpp \
    actionlistmanager.cpp \
    action.cpp \
    savexmldialog.cpp

HEADERS += \
        mainwindow.h \
    actionlistdialog.h \
    customtreewidget.h \
    filterparameters.h \
    actionlist.h \
    actionlistmanager.h \
    action.h \
    savexmldialog.h

FORMS += \
        mainwindow.ui \
    actionlistdialog.ui \
    savexmldialog.ui

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

SGaist

The .pro file looks fine.

How did you install Qt ?

yyang005

I downloaded qt-unified-mac-x64-3.0.6-online.dmg file and run the installation.

SGaist

Can you rebuild your project from scratch and run macdeployqt with the verbose option on a higher level ?

yyang005

It is interesting. When I tried to run from pathToQt/clang_64/bin

./macdeployqt <path to project.app>

everything is working. But when I run from the same location

macdeployqt <path to project.app>

I got the ERROR: Unexpected prefix "@loader_path".

SGaist

It means you are likely not running the macdeployqt version you think you are running.

What does which macdeployqt return ?

yyang005

which macdeployqt returns
/anaconda3/bin/macdeployqt

SGaist

So it looks like you are not using the correct version of macdeployqt. Use the full path to the Qt 5.12 version.