Packaging a Qt application

Revision as of 12:43, 19 February 2010

1 Packaging a Qt application for Maemo
2 Example
3 Useful Links

Packaging a Qt application for Maemo

Main article: Packaging

Packaging a Qt application for Maemo is very similar to packaging any other application, so this document only contains information on Qt-specific packaging issues.

Creating a Maemo package from a qmake project

In order to create a new package for Maemo, from a qmake project, you will need to:

Rename the source directory to Package-Version (for example myapp-0.1 for an application ‘myapp’ with a version of ‘0.1’)
Create a ‘src’ directory in Package-Version/
Copy all the files to the src/ directory
Rename src/appname.pro to src/src.pro

$mv myapp myapp-0.1
$cd myapp-0.1
$mkdir src
$cp * src
$mv src/appname.pro src/src.pro

Append the following chunk to end of your src/src.pro. The chunk adds an install section to your qmakefile

  unix {
    #VARIABLES
    isEmpty(PREFIX) {
        PREFIX = /usr/local
  }
BINDIR = $$PREFIX/bin
DATADIR =$$PREFIX/share

DEFINES += DATADIR=\\\"$$DATADIR\\\" PKGDATADIR=\\\"$$PKGDATADIR\\\"

#MAKE INSTALL

INSTALLS += target desktop iconxpm icon26 icon48 icon64

  target.path =$$BINDIR

  desktop.path = $$DATADIR/applications/hildon
  desktop.files += $${TARGET}.desktop

  iconxpm.path = $$DATADIR/pixmap
  iconxpm.files += ../data/maemo/$${TARGET}.xpm

  icon26.path = $$DATADIR/icons/hicolor/26x26/apps
  icon26.files += ../data/26x26/$${TARGET}.png

  icon48.path = $$DATADIR/icons/hicolor/48x48/apps
  icon48.files += ../data/48x48/$${TARGET}.png

  icon64.path = $$DATADIR/icons/hicolor/64x64/apps
  icon64.files += ../data/64x64/$${TARGET}.png
}

Create a myapp-0.1/myapp.pro file like this:

QMAKEVERSION = $$[QMAKE_VERSION]
ISQT4 = $$find(QMAKEVERSION, ^[2-9])
isEmpty( ISQT4 ) {
error("Use the qmake include with Qt4.4 or greater, on Debian that is qmake-qt4");
}

TEMPLATE = subdirs
SUBDIRS  = src

Run dh_make to debianize the source archive, it creates:
- An archive with the unchanged upstream source (orig.tar.gz)
- Some basic files in the debian directory
- Some example files (*.EX *.ex)

export DEBFULLNAME="maintainer first name and last name"
dh_make --createorig --single -e maintainer@email.org -c gpl

Editing the rules file

The rules file generated by dh_make will be modified in order to look like this one. We are using qmake, so there is no configure script to run. If you copy and paste the following file, notice that empty space beginning of lines it TAB characters, it is not multiple space characters. If you copy and paste the following chunk, you most propably get spaces instead of tabs and the file does not work.

#!/usr/bin/make -f
APPNAME := my_app_name
builddir:
        mkdir -p builddir

builddir/Makefile: builddir
        cd builddir && qmake-qt4 PREFIX=/usr ../$(APPNAME).pro

build: build-stamp

build-stamp: builddir/Makefile
        dh_testdir
        # Add here commands to compile the package.
        cd builddir && $(MAKE)
        touch $@

clean:
        dh_testdir
        dh_testroot
        rm -f build-stamp
        # Add here commands to clean up after the build process.
        rm -rf builddir
        dh_clean
install: build
        dh_testdir
        dh_testroot
        dh_clean -k
        dh_installdirs

        # Add here commands to install the package into debian/your_appname
        cd builddir && $(MAKE) INSTALL_ROOT=$(CURDIR)/debian/$(APPNAME) install
# Build architecture-independent files here.
binary-indep: build install
# We have nothing to do by default.

# Build architecture-dependent files here.
binary-arch: build install
        dh_testdir
        dh_testroot
        dh_installdocs
        dh_installexamples
        dh_installman
        dh_link
        dh_strip --dbg-package=my-application-dbg
        dh_compress
        dh_fixperms
        dh_installdeb
        dh_shlibdeps
        dh_gencontrol
        dh_md5sums
        dh_builddeb

binary: binary-indep binary-arch
.PHONY: build clean binary-indep binary-arch binary install configure

Application menu icon & position

The Maemo application menu detects automatically an app that provides a .desktop file in /usr/share/application/hildon . If you don't have desktop file, create one in the src directory.

[Desktop Entry]
Encoding=UTF-8
Version=0.1
Type=Application
Name=myapp
Exec=/usr/bin/myapp
Icon=myapp
X-HildonDesk-ShowInToolbar=true
X-Osso-Type=application/x-executable

Maemo menu structure is completely different from Debian:

An unmodified Debian package installs the proper .desktop in /usr/share/applications
Applications that use the debian menu are displayed in the extra menu

In order to show our application in the correct Maemo menu:

debian/myapp.install moves the .desktop file and icons in the right directory

src/*.desktop usr/share/applications/hildon
src/*.png usr/share/icons/hicolor/26x26/apps

debian/postinst should call maemo-select-menu-location utility to permit the user to choose the menu location. This works only in Diablo, it doesn't work in Fremantle.

#!/bin/sh
maemo-select-menu-location myapp.desktop

Build the package

Run the following command in the project root folder to generate the package. The generated file will be created in the folder before the project root folder. Make sure you are compiling in FREMANTLE_ARMEL target to generate the package suitable for the device.

dpkg-buildpackage -rfakeroot -b

Example

You can download the source package of qt-maemo-example from the extras-devel repository as follows, if you have source packages enabled in your /etc/apt/sources.list file:

apt-get source qt-maemo-example

This command will download the:

unmodified source (.orig.tar.gz)
debian dsc file (.dsc)
diff file (.diff)

and will then automatically launch dpkg -x file.dsc in order to decompress the orig.tar.gz and apply the changes.

Useful Links

Retrieved from "http://wiki.maemo.org/Packaging_a_Qt_application"

Categories: Packaging | Qt

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