success compiled, but can load the qt library.

[tauruswang]

(base) JerryWs-MacBook-Pro:examples jerryw$ cargo build
    Finished dev [unoptimized + debuginfo] target(s) in 0.06s
(base) JerryWs-MacBook-Pro:examples jerryw$ cargo run --bin form1
    Finished dev [unoptimized + debuginfo] target(s) in 0.06s
     Running `target/debug/form1`
dyld: Library not loaded: @rpath/libQt5Widgets.5.dylib
  Referenced from: /Users/jerryw/MyCode/StudyRust/examples/target/debug/form1
  Reason: image not found
Abort trap: 6
(base) JerryWs-MacBook-Pro:examples jerryw$  otool -L /Users/jerryw/MyCode/StudyRust/examples/target/debug/form1
/Users/jerryw/MyCode/StudyRust/examples/target/debug/form1:
        @rpath/libQt5Widgets.5.dylib (compatibility version 5.12.0, current version 5.12.5)
        @rpath/libQt5Core.5.dylib (compatibility version 5.12.0, current version 5.12.5)
        @rpath/libQt5Gui.5.dylib (compatibility version 5.12.0, current version 5.12.5)
        @rpath/libc++.1.dylib (compatibility version 1.0.0, current version 1.0.0)
        /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1281.0.0)
        /usr/lib/libresolv.9.dylib (compatibility version 1.0.0, current version 1.0.0)
(base) JerryWs-MacBook-Pro:examples jerryw$ 

and I also
export DYLD_LIBRARY_PATH=/usr/local/Qt-5.14.0/lib/
to spepcify the QT library path.

by the way, Does my Qt install incorrect on Mac OS 10.15.3?
** I installed QT, but None of dylib (mybe libQt5Widgets.5.dylib) files found in lib path.

in directory there are frameworks ,
ls /usr/local/Qt-5.14.0/lib/

Qt3DAnimation.framework QtTextToSpeech.framework libQt5GraphicsSupport_debug.prl
Qt3DCore.framework QtUiPlugin.framework libQt5OpenGLExtensions.a
Qt3DExtras.framework QtVirtualKeyboard.framework libQt5OpenGLExtensions.la
Qt3DInput.framework QtWebChannel.framework libQt5OpenGLExtensions.prl
Qt3DLogic.framework QtWebEngine.framework libQt5OpenGLExtensions_debug.a
Qt3DQuick.framework QtWebEngineCore.framework libQt5OpenGLExtensions_debug.la
Qt3DQuickAnimation.framework QtWebEngineWidgets.framework libQt5OpenGLExtensions_debug.prl
Qt3DQuickExtras.framework QtWebSockets.framework libQt5PacketProtocol.a
Qt3DQuickInput.framework QtWebView.framework libQt5PacketProtocol.la
Qt3DQuickRender.framework QtWidgets.framework libQt5PacketProtocol.prl
Qt3DQuickScene2D.framework QtXml.framework libQt5PacketProtocol_debug.a
Qt3DRender.framework QtXmlPatterns.framework libQt5PacketProtocol_debug.la
QtBluetooth.framework cmake libQt5PacketProtocol_debug.prl
QtBodymovin.framework libQt5AccessibilitySupport.a libQt5PlatformCompositorSupport.a
QtCharts.framework libQt5AccessibilitySupport.la libQt5PlatformCompositorSupport.la
QtConcurrent.framework libQt5AccessibilitySupport.prl libQt5PlatformCompositorSupport.prl
QtCore.framework libQt5AccessibilitySupport_debug.a libQt5PlatformCompositorSupport_debug.a
QtDBus.framework libQt5AccessibilitySupport_debug.la libQt5PlatformCompositorSupport_debug.la
QtDataVisualization.framework libQt5AccessibilitySupport_debug.prl libQt5PlatformCompositorSupport_debug.prl
QtDesigner.framework libQt5Bootstrap.a libQt5QmlDebug.a
QtDesignerComponents.framework libQt5Bootstrap.la libQt5QmlDebug.la
QtGamepad.framework libQt5Bootstrap.prl libQt5QmlDebug.prl
QtGui.framework libQt5ClipboardSupport.a libQt5QmlDebug_debug.a
QtHelp.framework libQt5ClipboardSupport.la libQt5QmlDebug_debug.la
QtLocation.framework libQt5ClipboardSupport.prl libQt5QmlDebug_debug.prl
QtMacExtras.framework libQt5ClipboardSupport_debug.a libQt5QmlDevTools.a
QtMultimedia.framework libQt5ClipboardSupport_debug.la libQt5QmlDevTools.la
QtMultimediaQuick.framework libQt5ClipboardSupport_debug.prl libQt5QmlDevTools.prl
QtMultimediaWidgets.framework libQt5DeviceDiscoverySupport.a libQt5ServiceSupport.a
QtNetwork.framework libQt5DeviceDiscoverySupport.la libQt5ServiceSupport.la
QtNetworkAuth.framework libQt5DeviceDiscoverySupport.prl libQt5ServiceSupport.prl
QtNfc.framework libQt5DeviceDiscoverySupport_debug.a libQt5ServiceSupport_debug.a
QtOpenGL.framework libQt5DeviceDiscoverySupport_debug.la libQt5ServiceSupport_debug.la
QtPositioning.framework libQt5DeviceDiscoverySupport_debug.prl libQt5ServiceSupport_debug.prl
QtPositioningQuick.framework libQt5EdidSupport.a libQt5ThemeSupport.a
QtPrintSupport.framework libQt5EdidSupport.la libQt5ThemeSupport.la
QtPurchasing.framework libQt5EdidSupport.prl libQt5ThemeSupport.prl
QtQml.framework libQt5EdidSupport_debug.a libQt5ThemeSupport_debug.a
QtQmlModels.framework libQt5EdidSupport_debug.la libQt5ThemeSupport_debug.la
QtQmlWorkerScript.framework libQt5EdidSupport_debug.prl libQt5ThemeSupport_debug.prl
QtQuick.framework libQt5EventDispatcherSupport.a libQt5UiTools.a
QtQuick3D.framework libQt5EventDispatcherSupport.la libQt5UiTools.la
QtQuick3DAssetImport.framework libQt5EventDispatcherSupport.prl libQt5UiTools.prl
QtQuick3DRender.framework libQt5EventDispatcherSupport_debug.a libQt5UiTools_debug.a
QtQuick3DRuntimeRender.framework libQt5EventDispatcherSupport_debug.la libQt5UiTools_debug.la
QtQuick3DUtils.framework libQt5EventDispatcherSupport_debug.prl libQt5UiTools_debug.prl
QtQuickControls2.framework libQt5FbSupport.a libQtRepParser.prl
QtQuickParticles.framework libQt5FbSupport.la libQtRepParser_debug.prl
QtQuickShapes.framework libQt5FbSupport.prl libQtUiPlugin.prl
QtQuickTemplates2.framework libQt5FbSupport_debug.a libQtUiPlugin_debug.prl
QtQuickTest.framework libQt5FbSupport_debug.la libQtWebEngineCore.prl
QtQuickWidgets.framework libQt5FbSupport_debug.prl libQtWebEngineCore_debug.prl
QtRemoteObjects.framework libQt5FontDatabaseSupport.a libqtfreetype.a
QtRepParser.framework libQt5FontDatabaseSupport.la libqtfreetype.prl
QtScript.framework libQt5FontDatabaseSupport.prl libqtfreetype_debug.a
QtScriptTools.framework libQt5FontDatabaseSupport_debug.a libqtfreetype_debug.prl
QtScxml.framework libQt5FontDatabaseSupport_debug.la libqtlibpng.a
QtSensors.framework libQt5FontDatabaseSupport_debug.prl libqtlibpng.prl
QtSerialBus.framework libQt5GraphicsSupport.a libqtlibpng_debug.a
QtSerialPort.framework libQt5GraphicsSupport.la libqtlibpng_debug.prl
QtSql.framework libQt5GraphicsSupport.prl pkgconfig
QtSvg.framework libQt5GraphicsSupport_debug.a
QtTest.framework libQt5GraphicsSupport_debug.la

[tauruswang]

(base) JerryWs-MacBook-Pro:examples jerryw$
export DYLD_LIBRARY_PATH=/Users/jerryw/anaconda3/pkgs/qt-5.12.5-h1b46049_0/lib:/usr/local/Cellar/icu4c/64.2/lib

still can not find libs file properly

(base) JerryWs-MacBook-Pro:examples jerryw$ cargo run --bin form1 Finished dev [unoptimized + debuginfo] target(s) in 0.10s
Running target/debug/form1
qt.qpa.plugin: Could not find the Qt platform plugin "cocoa" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Abort trap: 6
(base) JerryWs-MacBook-Pro:examples jerryw$
export QT_QPA_PLATFORM_PLUGIN_PATH=/Users/jerryw/anaconda3/pkgs/qt-5.12.5-h1b46049_0/p
phrasebooks/ plugins/

(base) JerryWs-MacBook-Pro:examples jerryw$ cargo run --bin form1
Finished dev [unoptimized + debuginfo] target(s) in 0.17s
Running target/debug/form1 😳

and finally works! 💆

I just luckily that anaconda have these QT dylib files. My question is Why Qt build from source can not have these dylib files, Do I need some special config for build QT for Mac OS ?

[Riateche]

Looks like the build script failed to detect that Qt is built in framework mode.

How did you build and install Qt? Is qmake corresponding to the installation added to the current PATH?

Please show output of these commands:

qmake -query
ls /usr/local/Qt-5.14.0/lib/QtWidgets.framework

[tauruswang]

I build my Qt from the source code repository.
After make finished, I do the make install.
It seems to install all the built output files to /usr/local/Qt-5.14.0/

Actually I run the qmake -query, it is output
(base) JerryWs-MacBook-Pro:redox jerryw$ qmake -query
QT_SYSROOT:
QT_INSTALL_PREFIX:/Users/jerryw/anaconda3
QT_INSTALL_ARCHDATA:/Users/jerryw/anaconda3
QT_INSTALL_DATA:/Users/jerryw/anaconda3
QT_INSTALL_DOCS:/Users/jerryw/anaconda3/doc
QT_INSTALL_HEADERS:/Users/jerryw/anaconda3/include/qt
QT_INSTALL_LIBS:/Users/jerryw/anaconda3/lib
QT_INSTALL_LIBEXECS:/Users/jerryw/anaconda3/libexec
QT_INSTALL_BINS:/Users/jerryw/anaconda3/bin
QT_INSTALL_TESTS:/Users/jerryw/anaconda3/tests
QT_INSTALL_PLUGINS:/Users/jerryw/anaconda3/plugins
QT_INSTALL_IMPORTS:/Users/jerryw/anaconda3/imports
QT_INSTALL_QML:/Users/jerryw/anaconda3/qml
QT_INSTALL_TRANSLATIONS:/Users/jerryw/anaconda3/translations
QT_INSTALL_CONFIGURATION:/Users/jerryw/anaconda3
QT_INSTALL_EXAMPLES:/Users/jerryw/anaconda3/examples
QT_INSTALL_DEMOS:/Users/jerryw/anaconda3/examples
QT_HOST_PREFIX:/Users/jerryw/anaconda3
QT_HOST_DATA:/Users/jerryw/anaconda3
QT_HOST_BINS:/Users/jerryw/anaconda3/bin
QT_HOST_LIBS:/Users/jerryw/anaconda3/lib
QMAKE_SPEC:macx-clang
QMAKE_XSPEC:macx-clang
QMAKE_VERSION:3.1
QT_VERSION:5.12.5

And my build version is at /usr/local
ls /usr/local/Qt-5.14.0/lib/QtWidgets.framework
Headers QtWidgets QtWidgets_debug Resources Versions

I guess, the PATH environment lets qmake find Qt Library from Anaconda stuffs.

echo $PATH
-bash: export: /Users/jerryw/anaconda3/bin:/Users/jerryw/anaconda3/condabin:/usr/local/opt/qt/bin:/Users/jerryw/.cargo/bin:/Library/Frameworks/Python.framework/Versions/3.5/bin:/opt/local/bin:/opt/local/sbin:/usr/local/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Applications/VMware': not a valid identifier -bash: export: Fusion.app/Contents/Public:/opt/X11/bin:/Library/Frameworks/Mono.framework/Versions/Current/Commands:/Users/jerryw/.rvm/bin:/Users/jerryw/Library/Android/sdk/tools:/Users/jerryw/Library/Android/sdk/platform-tools:/usr/local/opt/go/libexec/bin': not a valid identifier

and my PATH environment also looks not correct ...

[Riateche]

The qmake executable should point to the Qt installation you're trying to use. To achieve that, change your PATH variable:

export PATH=/usr/local/Qt-5.14.0/bin:$PATH

You should also set DYLD_FRAMEWORK_PATH to allow dyld to find the frameworks at runtime:

export DYLD_FRAMEWORK_PATH=/usr/local/Qt-5.14.0/lib:$DYLD_FRAMEWORK_PATH

[tauruswang]

Yes, after I set these environment variables.
export PATH=/usr/local/Qt-5.14.0/bin:$PATH
export DYLD_FRAMEWORK_PATH=/usr/local/Qt-5.14.0/lib:$DYLD_FRAMEWORK_PATH
but it still doesn't work, and said dyld: Library not loaded: @rpath/libQt5Widgets.5.dylib
I just wondering, Do I need to recompile the Qt source code that makes sure these dylib files carry-out in DYLD_FRAMEWORK_PATH, then will works?

[Riateche]

Have you tried running cargo clean before building again with these environment variables?

Are you able to build and run C++ Qt projects (e.g. examples bundled with Qt) using this Qt build?

[Nick011]

dyld: Library not loaded: @rpath/libQt5Widgets.5.dylib

I just struggled with this same error for a few hours. I finally figured something out. Try this:

• Create a file in your project .cargo/config
• Put the following in there:

[build]
rustflags = ["-C", "link-args=-Wl,-rpath,/usr/local/Qt-5.14.0/lib"]

Make sure /usr/local/Qt-5.14.0/lib actually contains the Qt libs. I'm on Mac and my Qt libs are installed at /Users/nick/Qt/5.14.2/clang_64/lib

I can now do cargo run and import a Qt lib without error. Now onto the next step of actually trying to use it.

[gavrilikhin-d]

dyld: Library not loaded: @rpath/libQt5Widgets.5.dylib

I just struggled with this same error for a few hours. I finally figured something out. Try this:

• Create a file in your project .cargo/config
• Put the following in there:

[build]
rustflags = ["-C", "link-args=-Wl,-rpath,/usr/local/Qt-5.14.0/lib"]

Make sure /usr/local/Qt-5.14.0/lib actually contains the Qt libs. I'm on Mac and my Qt libs are installed at /Users/nick/Qt/5.14.2/clang_64/lib

I can now do cargo run and import a Qt lib without error. Now onto the next step of actually trying to use it.

Man, you have just saved me.

[gavrilikhin-d]

Why rust even generates dependencies with @rpath? I had an issue with @rpath/libc++.1.dylib