[Solved] Ubuntu qt components installation error

rferrazz

I've tried to install ubuntu qt components on archlinux, i've created a build script and it builds fine, basically it builds like this:
@
qmake-qt5 -r ubuntu-sdk.pro
make --quiet
make INSTALL_ROOT=${pkgdir} install
@

the package builds fine and installs the component library under /usr/lib/qt5/imports/Ubuntu/Components/
i've tried this sample application under qtcreator
@
import QtQuick 2.0
import Ubuntu.Components 0.1

Rectangle {
id: root
width: units.gu(60)
height: units.gu(80)
color: "lightgray"

property real margins: units.gu(2)
property real buttonWidth: units.gu(9)

Label {
   id: title
   ItemStyle.class: "title"
   text: i18n.tr("Currency Converter")
   height: contentHeight + root.margins
   anchors {
       left: parent.left
       right: parent.right
       top: parent.top
   }
}

}
@
but when i run the application it says the following

@Starting external tool '/usr/lib/qt5/bin/qmlscene' /home/riccardo/Programmi/Prova/qml/Prova/main.qml
file:///home/riccardo/Programmi/Prova/qml/Prova/main.qml:2 module "Ubuntu.Components" is not installed@

Why? What's the mistake? And why qtcreator doesn't underline the import statement?
Any hints will be appreciated!

chrisadams

Try exporting QML_IMPORT_TRACE=1 in your environment, and see what output you get. It seems like the import path is incorrect (QML2_IMPORT_PATH should be /usr/lib/qt5/imports/ by default).

Cheers,
Chris.

rferrazz

it turns out that the default import paths are /usr/lib/qt5/qml and /usr/lib/qt5/bin, doing
@export QML2_IMPORT_PATH=/usr/lib/qt5/imports@
fixed the problem!

Thank you!

shullw

I bet I will face this type of stuff soon as well. I just wanted to thank you for posting the answer you figured out on your own. You might want to mark it as [Solved] as well. Good sleuthing.

rferrazz

Marked, i've found that in the project files there's an install path variable initialized like this:
@installPath = $$[QT_INSTALL_IMPORTS]/$$replace(uri, \., /)@
and changing QT_INSTALL_IMPORTS to QT_INSTALL_QML provides a radical solution to the problem

So what is correct to use to install qml components? QT_INSTALL_QML (in my system /usr/lib/qt5/qml) or QT_INSTALL_IMPORTS ?

thuai

Hi, referrazz

I have the same problem with you!

but set environment variable "QML2_IMPORT_PATH", this way can't work.

export QML2_IMPORT_PATH=/usr/lib/qt5/imports

QT_INSTALL_PREFIX:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64
QT_INSTALL_ARCHDATA:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64
QT_INSTALL_DATA:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/
QT_INSTALL_DOCS:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/doc
QT_INSTALL_HEADERS:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/include
QT_INSTALL_LIBS:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/lib
QT_INSTALL_LIBEXECS:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/libexec
QT_INSTALL_BINS:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/bin
QT_INSTALL_TESTS:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/tests
QT_INSTALL_PLUGINS:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/plugins
QT_INSTALL_IMPORTS:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/imports
QT_INSTALL_QML:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/qml
QT_INSTALL_TRANSLATIONS:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/translations
QT_INSTALL_CONFIGURATION:/etc/xdg
QT_INSTALL_EXAMPLES:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/examples
QT_INSTALL_DEMOS:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/examples
QT_HOST_PREFIX:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64
QT_HOST_DATA:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64
QT_HOST_BINS:/home/thuai/local/Qt5.0.0/5.0.0/gcc_64/bin
QMAKE_SPEC:linux-g++-64
QMAKE_XSPEC:linux-g++-64
QMAKE_VERSION:3.0
QT_VERSION:5.0.0

Can you give me some help?

Thks!

rferrazz

where are your components installed? you have qt5 in your home directory so QML2_IMPORT_PATH should be /home/thuai/local/Qt5.0.0/5.0.0/gcc_64/imports or /home/thuai/local/Qt5.0.0/5.0.0/gcc_64/qml

thuai

Hi rferrazz,

Thks for your replying!

I tried QML2_IMPORT_PATH=/home/thuai/local/Qt5.0.0/gcc_64/imports or /home/thuai/local/Qt5.0.0/gcc_64/qml.

Both can not work!

I install Qt5 and Ubuntu UI toolkit according this website http://developer.ubuntu.com/get-started/gomobile/#step-write-app
Acording this article, Ubuntu UI toolkit can not be recognized by QtCreator

So i reinstall Qt5 and Ubuntu Components according to http://askubuntu.com/questions/236012/cant-install-qt-components-ubuntu-because-im-using-full-release-of-qt-5-0-0

After reinstall Qt5 and Ubuntu Components.

"import Ubuntu.Components 0.1" is resolved.

And label element is recognized but the ItemStyle attribute isn't.

Do you meet the problem about ItemStyle?

Thks!

rferrazz

the syntax checker don't recognize it but it works correctly

thuai

You are right.
It's syntax check.

Thank you!