Building a Qt4-x11 app.

Building a Qt4-x11 app.

[Daniel Toussaint]

I wish to run an application developed with QT in a Yocto filesystem.
The app should be linked against Qt4-X11 libs. What is the exact work
flow to get my app cross compiled on my x86_64 host ?
So far I have :
-> Build a complete core-image-sato with IPKG as a packaging system.
-> Build qt4-x11-free
-> Build qt4-tools-nativesdk

Now, I got something called qmake2 in the build directory
(sysroot-x86_64) , but it complains about not finding the right qmake
specs.
I got the feeling I am doing something fundamentally wrong with my
setup, can anyone enlighten me ?

Thanks a lot.

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Re: Building a Qt4-x11 app.

[Wolfgang Denk]

Dear Daniel,

In message <CADVYk4SBWkAnU4RL6k2_+1aedbFnfptohKffjGdaK6C2bs-6RQ@mail.gmail.com> you wrote:
> I wish to run an application developed with QT in a Yocto filesystem.
> The app should be linked against Qt4-X11 libs. What is the exact work
> flow to get my app cross compiled on my x86_64 host ?
> So far I have :
> -> Build a complete core-image-sato with IPKG as a packaging system.
> -> Build qt4-x11-free
> -> Build qt4-tools-nativesdk
> 
> Now, I got something called qmake2 in the build directory
> (sysroot-x86_64) , but it complains about not finding the right qmake
> specs.
> I got the feeling I am doing something fundamentally wrong with my
> setup, can anyone enlighten me ?

Try building "meta-toolchain-qte" for the cross development tools,
and "core-image-qte-sdk" for a reasonably complete root file system
that can also be used for native development when needed.

Best regards,

Wolfgang Denk

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Re: Building a Qt4-x11 app.

[Eric Bénard]

Le Sun, 29 Apr 2012 16:41:17 +0200,
Wolfgang Denk <wd@denx.de> a écrit :

> Dear Daniel,
> 
> In message <CADVYk4SBWkAnU4RL6k2_+1aedbFnfptohKffjGdaK6C2bs-6RQ@mail.gmail.com> you wrote:
> > I wish to run an application developed with QT in a Yocto filesystem.
> > The app should be linked against Qt4-X11 libs. What is the exact work
> > flow to get my app cross compiled on my x86_64 host ?
> > So far I have :
> > -> Build a complete core-image-sato with IPKG as a packaging system.
> > -> Build qt4-x11-free
> > -> Build qt4-tools-nativesdk
> > 
> > Now, I got something called qmake2 in the build directory
> > (sysroot-x86_64) , but it complains about not finding the right qmake
> > specs.
> > I got the feeling I am doing something fundamentally wrong with my
> > setup, can anyone enlighten me ?
> 
> Try building "meta-toolchain-qte" for the cross development tools,
> and "core-image-qte-sdk" for a reasonably complete root file system
> that can also be used for native development when needed.
> 
this won't work for qt4-x11, only for qt4-embedded.

Eric

Re: Building a Qt4-x11 app.

[Eric Bénard]

Le Sun, 29 Apr 2012 21:16:44 +0800,
Daniel Toussaint <daniel@dmhome.net> a écrit :

> I wish to run an application developed with QT in a Yocto filesystem.
> The app should be linked against Qt4-X11 libs. What is the exact work
> flow to get my app cross compiled on my x86_64 host ?
> So far I have :
> -> Build a complete core-image-sato with IPKG as a packaging system.
> -> Build qt4-x11-free
> -> Build qt4-tools-nativesdk
> 
> Now, I got something called qmake2 in the build directory
> (sysroot-x86_64) , but it complains about not finding the right qmake
> specs.
> I got the feeling I am doing something fundamentally wrong with my
> setup, can anyone enlighten me ?
> 
simply write a recipe for your app and let the build system build
your application.

The recipe can be quite simple if your app doesn't depends on other
libs than qt4 :

DESCRIPTION = "Application QT4-X11"
SECTION = "Apps"
LICENSE = "yourlicense"
LIC_FILES_CHKSUM = "file://youlicense;md5=yourmd5"

inherit qt4x11

SRC_URI = "file://application.tar.bz2"
# or directly download it from a VCS

# may be necessary :
EXTRA_QMAKEVARS_PRE += "PREFIX=/usr"
EXTRA_OEMAKE += "INSTALL_ROOT=${D}"

do_install() {
	oe_runmake install INSTALL_ROOT=${D}
}

Eric

Re: Building a Qt4-x11 app.

[Daniel Toussaint]

On Mon, Apr 30, 2012 at 3:19 AM, Eric Bénard <eric@eukrea.com> wrote:
> Le Sun, 29 Apr 2012 21:16:44 +0800,
> Daniel Toussaint <daniel@dmhome.net> a écrit :
>
>> I wish to run an application developed with QT in a Yocto filesystem.
>> The app should be linked against Qt4-X11 libs. What is the exact work
>> flow to get my app cross compiled on my x86_64 host ?
>> So far I have :
>> -> Build a complete core-image-sato with IPKG as a packaging system.
>> -> Build qt4-x11-free
>> -> Build qt4-tools-nativesdk
>>
>> Now, I got something called qmake2 in the build directory
>> (sysroot-x86_64) , but it complains about not finding the right qmake
>> specs.
>> I got the feeling I am doing something fundamentally wrong with my
>> setup, can anyone enlighten me ?
>>
> simply write a recipe for your app and let the build system build
> your application.
>
> The recipe can be quite simple if your app doesn't depends on other
> libs than qt4 :
>
> DESCRIPTION = "Application QT4-X11"
> SECTION = "Apps"
> LICENSE = "yourlicense"
> LIC_FILES_CHKSUM = "file://youlicense;md5=yourmd5"
>
> inherit qt4x11
>
> SRC_URI = "file://application.tar.bz2"
> # or directly download it from a VCS
>
> # may be necessary :
> EXTRA_QMAKEVARS_PRE += "PREFIX=/usr"
> EXTRA_OEMAKE += "INSTALL_ROOT=${D}"
>
> do_install() {
>        oe_runmake install INSTALL_ROOT=${D}
> }
>
> Eric

Thanks a lot that worked great !

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Skype: supertoussi
Cell: +886-915-680-291