Cross Compiling Qt for ARM with OpenGL

RhnBlk

hi everyone,
After searching the web and going through tutorials I tried configuring qt 4.8.4 with OpenGL options:
This is my command
@
./configure -embedded arm -xplatform
/usr/local/qt-source-cross/qt-everywhere-opensource-src-4.8.4/mkspecs/qws/linux-arm-g++
-prefix /usr/local/qt_install -little-endian -no-webkit -nomake demos
-nomake examples -no-largefile -optimized-qmake -nomake tools
-no-openssl -opengl
@

The error which i get is

@
You have not explicitly asked to use pkg-config and are cross-compiling.
pkg-config will not be used to automatically query cflag/lib parameters for
dependencies
All the OpenGL ES functionality tests failed!
You might need to modify the include and library search paths by editing
QMAKE_INCDIR_OPENGL, QMAKE_LIBDIR_OPENGL and QMAKE_LIBS_OPENGL in
/usr/local/qt-source-cross/qt-everywhere-opensource-src-4.8.4/mkspecs/qws/linux-arm-g++.

@

My qmake.conf file looks like this

@
# modifications to g++.conf
QMAKE_CC = /usr/local/qt-source-cross/arm-2012.09/bin/arm-none-linux-gnueabi-gcc -msoft-float -D_GCC_FLOAT_NOT_NEEDED -march=armv4t -mtune=arm920t -O0 -lrt
QMAKE_CXX = /usr/local/qt-source-cross/arm-2012.09/bin/arm-none-linux-gnueabi-g++ -msoft-float -D_GCC_FLOAT_NOT_NEEDED -march=armv4t -mtune=arm920t -O0 -lrt
QMAKE_LINK = /usr/local/qt-source-cross/arm-2012.09/bin/arm-none-linux-gnueabi-g++ -msoft-float -D_GCC_FLOAT_NOT_NEEDED -march=armv4t -mtune=arm920t -O0 -lrt
QMAKE_LINK_SHLIB = /usr/local/qt-source-cross/arm-2012.09/bin/arm-none-linux-gnueabi-g++ -msoft-float -D_GCC_FLOAT_NOT_NEEDED -march=armv4t -mtune=arm920t -O0 -lrt

# modifications to linux.conf
QMAKE_AR = /usr/local/qt-source-cross/arm-2012.09/bin/arm-linux-gnueabi-ar cqs
QMAKE_OBJCOPY = /usr/local/qt-source-cross/arm-2012.09/bin/arm-linux-gnueabi-objcopy
QMAKE_STRIP = /usr/local/qt-source-cross/arm-2012.09/bin/arm-linux-gnueabi-strip
MAKE_RANLIB = /usr/local/qt-source-cross/arm-2012.09/bin/arm-none-linux-gnueabi-ranlib


QMAKE_INCLDIR_OPENGL = /usr/include/GL /usr/include/GL/internal/
QMAKE_LIBDIR_OPENGL = /usr/lib64/
QMAKE_LIBS_OPENGL_ES1 = -lEGL -lGLES_CM -lIMGegl -lsrv_um -lusc

QMAKE_INCDIR_OPENGL_EGL = /usr/include/GLES/
QMAKE_LIBDIR_OPENGL_EGL = /usr/lib64/
QMAKE_LIBS_OPENGL_EGL = -lEGL -lGLESv2 -lGLES_CM -lIMGegl -lsrv_um -lusc


QMAKE_INCLDIR_OPENGL_ES2 = /usr/include/GLES2/
QMAKE_LIBDIR_OPENGL_ES2 = /usr/lib64/
QMAKE_LIBS_OPENGL_ES2 = -lEGL -lGLESv2 -lGLES_CM -lIMGegl -lsrv_um -lusc
QMAKE_LIBS_THREAD = -lpthread

load(qt_config)

@

For opengl libraries I installed Mesa using yum.
I don't know where I'm missing :(
Please help.

SGaist

Hi,

Since you are cross-compiling you also need to get the equivalent libraries for ARM otherwise you would be trying to link ARM generated code with x86 libraries.

RhnBlk

hi,
Thankx for the reply.
So you saying me I'v to cross compile mesa libraries with arm compiler and then configure qt?
and lets say even if I configured this libraries using source with arm compiler, but I won't be able to install it in my Fedora system.
So how will i link these libraries while configuring qt-src.
and moreover configuring mesa is a headache i guess, coz Im too lazy.
Please help.

SGaist

What kind of linux distribution do you run on your target ? If it's for example a Debian derivative your could always get their precompiled package

RhnBlk

It is Debian.
But what if it is not Debian distro. I've to do all the steps.. like compiling mesa then configuring qt?

SGaist

In that case you would rather use something like OpenEmbedded or the Yocto project that provides most of the things ready to build.

Nothing forbids you to go from scratch but that takes time and you would have to configure everything including mesa qt the base libraries etc...

dreamerindia

Hi RhnBlk,
I'm also getting same error... you got any success?