mtdev support (and some other components too) require pkg-config. Doesn't your 
system have it?


As a quick fix for your build adding -lmtdev in the config test and 
evdevtouch.pri is good enough.


The proper fix is probably


!contains(QT_CONFIG, no-pkg-config) {

    ...
} else {

    LIBS += ...
}


BR,

Laszlo

________________________________
From: nus1998 <[email protected]>
Sent: Monday, February 2, 2015 11:41 AM
To: nus1998
Cc: Agocs Laszlo; [email protected]
Subject: Re:Re: [Interest] How to enable MTDEV for multi-touch

If I change "PKGCONFIG_PRIVATE += mtdev" in 
qtbase/config.tests/unix/mtdev/mtdev.pro to "unix:LIBS += -lmtdev", then mtdev 
will be "yes", however, I don't know is it safe for this modification.

Best regards,
Jie


? 2015-02-02 17:45:16,"nus1998" <[email protected]> ??:
Hi Laszlo,

Thanks for your reply, I realized it and downloaded the mtdev source code and 
cross compiled it, and then I use -I and -R in configure for  the header file 
and library path respectively,
however, it is failed to active mtdev too.

Best regards
Jie





? 2015-02-02 16:04:39,"Agocs Laszlo" 
<[email protected]<mailto:[email protected]>> ??:

Hi,


You need the libmtdev headers and libraries present in the sysroot, not in your 
host environment.


What device are you cross-compiling for?


Best regards,

Laszlo


________________________________
From: 
[email protected]<mailto:[email protected]>
 
<[email protected]<mailto:[email protected]>>
 on behalf of nus1998 <[email protected]<mailto:[email protected]>>
Sent: Monday, February 2, 2015 5:36 AM
To: [email protected]<mailto:[email protected]>
Subject: [Interest] How to enable MTDEV for multi-touch

Hi All,

I'm now compiling Qt 5.3.2, I have added the option "-mtdev" on configure, and 
there is no error encountered in the configure process. however, I found "mtdev 
.................. no" in the configure.summary after configure process is 
complete, which means "mtdev" is not enabled?

my host is ubuntu 12.04 and I installed libmtdev-dev, the complete configure 
command that I inputed is like below:

./configure -xplatform linux-arm-gnueabi-g++ -release -opensource 
-confirm-license -mtdev -make libs -prefix $PWD/_install

Thanks in advance for any tips.
Jie






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