Qtopia-interest Archive, May 2007
Re: About cross-compile Qtopia Core-4.3.0beta and OpenGL module
Message 1 in thread
On Monday 23 April 2007 10:07, duwchy wrote:
> Hi,
> i am studying software developing of embedded OpenGL, so i download your
> opensoure Qtopia Core-4.3.0beta for my study. now, I have cross-compiled
> Qtopia Core-4.3.0beta for my ARM PXA270 board. my compiler is armv4l,
> version 2.95.2 20000516 release. but I found that the module 'src/opengl'
> have not been compiled. so I enter 'src/opengl' to compile it then, but the
> compiling process crash when some errors occored, following is message:
> ------------------------------------
> armv4l-unknown-linux-g++ -c -pipe -fno-exceptions -O2 -Wall -W -D_REENTRANT
> -fPIC -DQT_SHARED -DQT_BUILD_OPENGL_LIB -DQT_NO_CAST_TO_ASCII
> -DQT_ASCII_CAST_WARNINGS -DQT3_SUPPORT -DQT_MOC_COMPAT -DQT_NO_FREETYPE
> -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -D_LARGEFILE64_SOURCE
> -D_LARGEFILE_SOURCE -I../../mkspecs/qws/linux-arm-g++ -I.
> -I../../include/QtCore -I../../include/QtCore -I../../include/QtGui
> -I../../include/QtGui -I../../include -I../../include/QtOpenGL
> -I.moc/release-shared-emb-arm -I.uic/release-shared-emb-arm
> -I../../include/QtCore -I../../include/QtCore -I../../include/QtGui
> -I../../include/QtGui -I../../include -I../../include/QtOpenGL
> -I.moc/release-shared-emb-arm -I.uic/release-shared-emb-arm -o
> .obj/release-shared-emb-arm/qgl.o qgl.cpp In file included from qgl.cpp:26:
> qgl.h:51: GLES/gl.h: ?????????
> In file included from qgl.cpp:30:
> qgl_p.h:64: GLES/egl.h: ?????????
> In file included from qgl.cpp:26:
> qgl.h:56: syntax error before `;'
> qgl.h:235: syntax error before `('
> qgl.h:237: syntax error before `('
> qgl.h:239: syntax error before `('
> qgl.h:241: `GLuint' was not declared in this scope
> qgl.h:241: parse error before `)'
> qgl.h:371: syntax error before `('
> qgl.h:373: syntax error before `('
> qgl.h:375: syntax error before `('
> qgl.h:376: `GLuint' was not declared in this scope
> qgl.h:376: parse error before `)'
> In file included from ../../include/QtOpenGL/private/qglextensions_p.h:1,
> from qgl_p.h:68,
> from qgl.cpp:30:
> ...
> ...
> ...
> ------------------------------------
> it seems that some header files are missed needed by the module. and then I
> read the document 'http://doc.trolltech.com/4.2/qtopiacore-opengl.html', so
> I download the gl header file from "http://www.khronos.org/egl/";, but
> compiling errors still exist. what's wrong? which website can I download
> the missing files?
> how can i cross-compile the opengl module and the opengl example?
> please help me.
> thanks in millions!
Hi,
To enable OpenGL ES in Qtopia Core you need to run configure with -opengl. You
will also need an OpenGL ES and EGL implementation and pass the necessary
library and include paths to configure using the -I and -L options.
Then you have to create a screen driver for Qtopia Core using EGL and write a
subclass of QWSWindowSurface which will be used by QGLWidget. We're working
on an example on how to do this for 4.3.
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