How to add QT support in buildroot and Run qt demo in rootfs
Note:
follow is verified for buildroot-2009.08
1. configure in buildroot
(1)make sure has select C++ support:
Toolchain —>
[*] Build/install c++ compiler and libstdc++?
(2) only choose QT support, not choose X.org support
Package Selection for the target —>
Graphic libraries and applications (graphic/text) —>
[*] Qt —>
[ ] Compile with debug support | |
Library type (Shared library) —> | |
[ ] Use commercial license | |
[*] Approve free license | |
[ ] Compatibility with Qt3 | |
[*] Gui Module | |
Pixel depths —> | |
[ ] Enable GIF support | |
[ ] Enable libmng support | |
JPEG support (Use Qt bundled libjpeg) —> | |
PNG support (No PNG support) —> | |
TIFF support (No TIFF support) —> | |
zlib support (Qt zlib) —> | |
freetype2 support (no freetype2 support) —> | |
(arm) The embedded platform we are making Qt for | |
[ ] SQL Module —> | |
Graphics drivers —> | |
Mouse drivers —> | |
[ ] Phonon Module | |
[*] XML Module | |
[ ] XML Patterns Module | |
[ ] SVG Module | |
-*- Network Module | |
[ ] WebKit Module | |
[ ] STL support | |
[ ] Enable OpenSSL support | |
[*] Script Module | |
[ ] Script Tools Module
Note:
(1)"Approve free license" will auto add "-confirm-license" to ./configure,
if not select it, you need auto input "yes" when compile qtopia.
(3) edit qt cofigure
edit package/qt.mk from:
——————————
…
QT_CONFIGURE:=#empty
…
./configure
$(if $(VERBOSE),-verbose,-silent)
-force-pkg-config
-embedded $(BR2_PACKAGE_QT_EMB_PLATFORM)
$(QT_QCONFIG_COMMAND)
$(QT_CONFIGURE)
-no-cups
-no-nis
-no-accessibility
-no-separate-debug-info
-hostprefix $(STAGING_DIR)/usr
-no-rpath
)
…
——————————
to:
——————————
…
#QT_CONFIGURE:= -prefix /usr -fast -nomake examples -nomake demos
QT_CONFIGURE:= -prefix $(TARGET_DIR)/usr -no-fast
…
./configure
$(if $(VERBOSE),-verbose,-silent)
-force-pkg-config
-embedded $(BR2_PACKAGE_QT_EMB_PLATFORM)
$(QT_QCONFIG_COMMAND)
$(QT_CONFIGURE)
-no-cups
-no-nis
-no-accessibility
-no-separate-debug-info
-hostprefix $(STAGING_DIR)/usr
-no-rpath
)
…..
——————————
Note:
A.-prefix $(TARGET_DIR)/usr
will tell the qt to install the generated qtopia libs, demos and examples into:
buildroot_dir/project_build_arm/uclibc/root/usr
B.-no-fast
will let qtopia to make all things, include demos and examples
C.more info about these parameter, please goto root dir of qtopia source(after make the qtopia):
buildroot_dir/build_arm/qt-embedded-linux-opensource-src-4.5.2/
do:
./configure –help
2.build qtopia
in buildroot, just do:
make
then can generate the rootfs with the support of qtopia, and you can find the:
qtopia libs in buildroot_dir/project_build_arm/uclibc/root/usr/lib
qtopia demos and examples under buildroot_dir/project_build_arm/uclibc/root/usr
3.run qtopia demo in board
(1) after booting board, configure necessary environments:
export QTDIR=/usr
export LD_LIBRARY_PATH=$QTDIR/lib
export QT_QWS_FONTDIR=$QTDIR/lib/fonts
export QWS_DISPLAY="LinuxFb:/dev/fb0"
Note:
export QWS_DISPLAY="LinuxFb:/dev/fb0"
can be repalced by:
export QWS_DISPLAY="LinuxFb:mmWidth480:mmHeight272:0"
export QWS_SIZE="480×272"
in which, our LCDis 480X272
(2) then can run any demo or example to check qtopia is work OK, such as:
/usr/examples/graphicsview/collidingmice/collidingmice -qws
/usr/examples/graphicsview/elasticnodes/elasticnodes -qws
/usr/demos/mainwindow/mainwindow -qws
Note:
-qws means this app is server by itself.Normally in embedded system, there is no server, so need this to destinate this app server by itself.
more info please refer:
http://doc.trolltech.com/4.3/qtopiacore-pointer.html
http://qt.nokia.com/doc/qtopia4.3/qtopiacore-running.html#using-a-single-display
[Tips]
1.more info about the necessary environment setting, please refer:
http://doc.trolltech.com/4.3/qtopiacore-envvars.html
2. more info about touch screen/ touch panel, please refer this :
http://doc.trolltech.com/4.3/qtopiacore-pointer.html
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