[Development] Qt Static Package

[Carlos Enrique Pérez Sánchez]

As Thiago said:

> Please note the -qt-zlib option and family: if you choose to use the
> bundled
> versions from Qt, you'll need to monitor those upstreams for security
> issues
> and, if any is found, rebuild your application after applying the fix to
> the
> sources bundled in Qt.
>
> Far better to use -system-zlib and family.
>

However, I faced the same problem time ago. I solved it by installing the
following dependencies with the `*sudo apt install command*` bellow:
```
Install dependences (thanks to Jeff Tranter): (you may already have most of
them installed):

sudo apt install build-essential perl python ruby bison flex gperf
libasound2-dev libatkmm-1.6-dev libbz2-dev libcap-dev libcups2-dev
libdrm-dev libegl1-mesa-dev libglu1-mesa-dev libfontconfig1-dev
libfreetype6-dev libgcrypt11-dev libgcrypt20-dev libgstreamer1.0-dev
libicu-dev libnss3-dev libpci-dev libpulse-dev libssl-dev libudev-dev
libx11-dev libx11-xcb-dev libxcb-composite0 libxcb-composite0-dev
libxcb-cursor-dev libxcb-cursor0 libxcb-damage0 libxcb-damage0-dev
libxcb-dpms0 libxcb-dpms0-dev libxcb-present-dev libxcb-present0
libxcb-randr0 libxcb-randr0-dev libxcb-record0 libxcb-record0-dev
libxcb-render-util0 libxcb-render-util0-dev libxcb-render0
libxcb-render0-dev libxcb-res0 libxcb-res0-dev libxcb-screensaver0
libxcb-screensaver0-dev  libxcb-shape0 libxcb-shape0-dev libxcb-shm0
libxcb-shm0-dev libxcb-sync-dev libxcb-sync1 libxcb-util-dev
libxcb-util0-dev libxcb-util1 libxcb1 libxcb1-dev libxcb-xf86dri0
libxcb-xf86dri0-dev libxcb-xfixes0 libxcb-xfixes0-dev libxcb-xinerama0
libxcb-xinerama0-dev libxcb-xkb1 libxcb-xkb-dev  libxcb-xtest0
libxcb-xtest0-dev  libxcb-xv0 libxcb-xv0-dev libxcb-xvmc0 libxcb-xvmc0-dev
libxcomposite-dev  libxcursor-dev libxdamage-dev libxext-dev  libxfixes-dev
libxi-dev libxrandr-dev libxrender-dev libxslt1-dev libxss-dev libxtst-dev

NOTE: Jeff Tranter is a Qt Consulting Manager at ICS. Jeff oversees the
architectural and high-level design of software systems for clients. Jeff’s
leadership organizes global teams of developers on desktop and embedded
applications.
```

El vie., 19 abr. 2019 a las 3:43, Khuram Ali (<khuram.ali at aim.com>)
escribió:

> Thank you very much Carlos. However, i have got below error when i tried
> to configure it on Ubuntu 18.04,
>
> ERROR: Feature 'xcb' was enabled, but the pre-condition 'features.thread
> && features.xkbcommon && libs.xcb' failed.
>
> What i am missing?
>
> Regards,
> Khuram Ali
>
>
> -----Ursprüngliche Mitteilung-----
> Von: Carlos Enrique Pérez Sánchez <ceperez1996 at gmail.com>
> An: development <development at qt-project.org>
> Verschickt: Fr, 19. Apr. 2019 2:14
> Betreff: Re: [Development] Qt Static Package
>
> Alexander Nassian:
>
> There are many ways that are much better and do not have the problems
> static linking involves.
>
>
> Many ways much better?
> Static linking is the recommended approach on Linux. And the people from
> the company uses static linking to build some Qt tools for linux (I have
> already checked that).
>
> Why should anyone recommend static linking for applications that use Qt?
> What should the advantages be? TQC would probably, with their posionous
> view on L-GPL usage.
>
>
> Static linking is indeed an interesting topic when we take licenses into
> account. And that is something that is already documented in Qt Help.
> However I think that with the resource system and with the "new" QML engine
> that can get the QML files from resources, the problems of static linking
> are no much different from the problems of dynamic linking, taking in
> account that all data in dynamic linking eighter is binary or can be
> embedded as a binary resource.
> I recommend static linking because:
> 1. The size of the application is less than the overall size of
> app+libs+etc in dynamic linking.
> 2. The deployment process is cleaner, easier, simpler.
> 3. You end with a lot less dependencies issues on Linux.
> 4. You can make your own custom installer for a specific application.
>
> The use case of installers is indeed a point: you can't have an installer
> that links dynamically. Qt Installer Framework has some issues concerning
> offline updates, and many people have migrate to other installer frameworks
> like NSIS, but they are usually not cross-platform or ugly, or no
> intuitive. Qt Inst. Frw. is built statically, but it uses Qt Widgets. Just
> Imagine a fluid UI on Qt Installer Framework using Qt Quick Controls 2.
> That will provide the best UX possible. It must be built against a static
> version of Qt. I don't know if they have done so or not, but I can't
> statically link with QQC2 (and I have been trying for 2 years), so building
> Qt Statically must be, at least, well documented.
>
> The issue is classified as P2 (important), and they assignee agree about
> providing static packages on the online installer.
> Thiago:
>
> Better yet: instead of upvoting, omeone post the full command-line that
> produces a working build.
>
>
> I agree, Thiago. But the issue is classified as P2, so I think that, at
> least, they will try. My best command line result is:
>
> For LINUX:
> ```
> ./configure -prefix "/somePath/Qt512Static" -static -release -opensource
> -confirm-license -qt-zlib -qt-pcre -qt-libpng -qt-libjpeg -fontconfig
> -qt-xcb -opengl desktop -sql-sqlite -make libs -make tools -nomake examples
> -nomake tests -skip qtwebengine
> ```
>
> For WINDOWS:
> ```
> configure -prefix "C:/somePath/QtStatic" -static -static-runtime -release
> -opensource -confirm-license -qt-zlib -qt-pcre -qt-libpng -qt-libjpeg
> -opengl desktop -sql-sqlite -qt-freetype -make libs -make tools -nomake
> examples -nomake tests -skip qtwebengine
> ```
>
> Sadly that does not work well with the QQC2 module (mainly under Windows),
> as applications shows no effects (elevation, shadows, etc). It may be a
> linking problem (I hope so) or maybe a problem with the Qt Graphical
> Effects module. Not sure.
>
> El dom., 14 abr. 2019 a las 19:47, Carlos Enrique Pérez Sánchez (<
> ceperez1996 at gmail.com>) escribió:
>
> What do people think about providing official static packages?
>
> The reason is that the distribution of an application is much easier in a
> single executable. For that reasons I've made many static qt builds and
> it's always a lot of work to make it running.
> I have success in building qt statically for console and widgets
> applications, but I have not success on building Qt Quick Controls 2
> applications statically, mainly on Windows, because the graphics effects
> are off, no shadows, no layer, no elevation, etc.
>
> There internet is full of people trying to build Qt statically, because Qt
> Docs lacks information about building static packages and there are not
> examples of commands to pass to configure. People even migrated to other
> frameworks because they like static applications, and in Qt doing that is
> always a pain.
>
> There is a Jira suggestion:
> https://bugreports.qt.io/browse/QTBUG-72810
>
> Please give an upvote there it if you agree.
>
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>
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