Cross compilation with X11

SGaist · wrote on 13 Oct 2014, 07:00

Did you check that you have read rights on you mounted file system ? Also did you mount it to the same place you used when cross-compiling Qt ?

ChaitraMohan · wrote on 13 Oct 2014, 07:38

Hi,
Yes I have mounted on the place as I had while cross compiling.

I have permission to read/write but as a root. Its as shown below:
@drwxr-xr-x 2 root root 4096 Jun 11 2013 cdrom
drwxrwx--- 2 root vboxsf 4096 Jun 12 2013 sf_UbuntuSharedFolder
drwxr-xr-x 1 root root 4096 Oct 6 11:28 SSHFS_X11@

ChaitraMohan · wrote on 13 Oct 2014, 09:34

Hi,

I resolved that issue. The problem was while mounting the file system using ssfhs I had not provided an option i.e allow_other. So it was showing permission denied error
Thank you.

ChaitraMohan · wrote on 13 Oct 2014, 11:02

Hi,

All my problem solved. Now Qt application is running on gnome.
Thank you so much for the help :) :)

SGaist · wrote on 13 Oct 2014, 22:55

You're welcome !

Since you have your application working now, please update the thread title prepending [solved] so other forum users may know a solution has been found :)

ChaitraMohan · wrote on 14 Oct 2014, 04:38

Hi,

Ya sure I will do it.
I have one more problem. Keyboard is not working after running the application.
How can I enable it?

SGaist · wrote on 14 Oct 2014, 21:40

How are you starting your application ? What type of keyboard is it ?

ChaitraMohan · wrote on 15 Oct 2014, 05:06

I am using USB Keyboard.
I am starting the application by giving the command in the terminal:
@./Test_app@

Keyboard works till application runs after application start running it doesn't work.

SGaist · wrote on 16 Oct 2014, 23:01

Still using X11 ?

ChaitraMohan · wrote on 17 Oct 2014, 04:36

Yes Qt application running on X11.

thanga · 23 Mar 2017, 05:48

@SGaist
Hi, I have followed same steps. It's works.
Is it possible build without target device ?
Could you please help me on this. Thanks in advance!

jsulm · 23 Mar 2017, 06:56

@thanga said in [SOLVED]Qt cross compilation with X11:

Is it possible build without target device ?

Can you explain what you mean?
You can build without target device if you have a sysroot for it.

thanga · 23 Mar 2017, 07:00

@jsulm

I have mounted target device on /media/SSHFS_X11/ path on host machine (Ubuntu). While mounted Qt getting build, If I disconnect the target device. I am getting following error:
Basic XLib functionality test failed!
You might need to modify the include and library search paths by editing
QMAKE_INCDIR_X11 and QMAKE_LIBDIR_X11 in /home/lolveley/bin/qt-x11-opensource-src-4.5.1/mkspecs/linux-g++.

May I know how to build without target device ? And how to configure sysroot on host (Ubuntu) machine ?

Could you please help me on this...

jsulm · 23 Mar 2017, 07:03

@thanga Just create a directory and copy the content of your target device to that directory. Then use this directory as your sysroot instead of /media/SSHFS_X11.

thanga · 23 Mar 2017, 07:13

@jsulm
I have copied /usr dir files to /media/SSHFS_X11, and tried to build But still and getting following error,
Basic XLib functionality test failed!
You might need to modify the include and library search paths by editing
QMAKE_INCDIR_X11 and QMAKE_LIBDIR_X11 in /home/lolveley/bin/qt-x11-opensource-src-4.5.1/mkspecs/linux-g++.

Is it required to copy all the contents or /usr dir is fine?

Target device also Ubuntu OS stand alone device.

jsulm · 23 Mar 2017, 08:06

@thanga You need to copy everything what is needed. You should copy at least /usr/lib and /usr/include, probably /lib as well.
It should then look like:

/media/SSHFS_X11/usr/include
/media/SSHFS_X11/usr/lib
/media/SSHFS_X11/lib

Call configure with -v parameter to see what exactly is missing if it says "Basic XLib functionality test failed!".

SGaist · wrote on 23 Mar 2017, 07:37

If you don't use the same folder as you did when configuring the first time then you should point configure to the new location. Note that you should do a build from scratch to avoid any leftovers from interfering.

thanga · 23 Mar 2017, 08:11

@jsulm
I have copied /usr/lib, /usr/include and /lib files to /media/SSHFS_X11/. I am getting following error now,

/media/SSHFS_X11/usr/include/./X11/Xlib.h:38:23: fatal error: sys/types.h: No such file or directory
compilation terminated.
make: *** [xlib.o] Error 1
XLib disabled.
Basic XLib functionality test failed!
You might need to modify the include and library search paths by editing
QMAKE_INCDIR_X11 and QMAKE_LIBDIR_X11 in /home/user/qt-everywhere-opensource-src-4.8.6/mkspecs/qws/linux-arm-linaro-g++.

jsulm · 23 Mar 2017, 08:13

@thanga said in [SOLVED]Qt cross compilation with X11:

sys/types.h

Does this header file exist in /media/SSHFS_X11/usr/include ?

thanga · J jsulm 23 Mar 2017, 08:11

@jsulm

No. sys/types.h file is not available. But following files are present on /media/SSHFS_X11/usr/include.

aio.h crypt.h FLAC i386-linux-gnu ltdl.h neteconet protocols setjmp.h sudo_plugin.h utmp.h
aliases.h ctype.h fmtmsg.h iconv.h malloc.h netinet pthread.h sgtty.h syscall.h utmpx.h
alloca.h dbus-1.0 fnmatch.h ieee754.h math.h netipx pty.h shadow.h sysexits.h values.h
a.out.h dirent.h fstab.h ifaddrs.h mcheck.h netiucv pwd.h signal.h syslog.h video
argp.h dlfcn.h fts.h inttypes.h memory.h netpacket python2.7 sndfile.h tar.h vorbis
argz.h drm ftw.h langinfo.h mm netrom rdma sndfile.hh termio.h wait.h
ar.h elf.h _G_config.h lastlog.h mntent.h netrose re_comp.h sound termios.h wchar.h
arpa endian.h gconv.h libdrm monetary.h nfs regex.h spawn.h tgmath.h wctype.h
asm-generic envz.h getopt.h libgen.h mqueue.h nl_types.h regexp.h stab.h thread_db.h wordexp.h
assert.h err.h gettext-po.h libintl.h mtd nouveau resolv.h stdint.h time.h X11
autoopts errno.h GL libio.h nautilus-sendto nss.h rpc stdio_ext.h ttyent.h xcb
autosprintf.h error.h glob.h libltdl net obstack.h rpcsvc stdio.h ucontext.h xen
byteswap.h execinfo.h gnu-versions.h limits.h netash ogg sched.h stdlib.h ulimit.h xf86drm.h
c++ fcntl.h grp.h link.h netatalk paths.h scsi string.h unistd.h xf86drmMode.h
complex.h features.h gshadow.h linux netax25 poll.h search.h strings.h ustat.h xlocale.h
cpio.h fenv.h gstreamer-0.10 locale.h netdb.h printf.h semaphore.h stropts.h utime.h xorg