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85 lines
3.6 KiB
Plaintext
85 lines
3.6 KiB
Plaintext
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==============================================================================
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Using the Simple DirectMedia Layer with Qtopia/OPIE
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==============================================================================
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==============================================================================
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I. Setting up the Qtopia development environment.
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This document will not explain how to setup the Qtopia development
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environment. That is outside the scope of the document. You can read
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more on this subject in this excellent howto:
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http://www.zauruszone.com/howtos/linux_compiler_setup_howto.html
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==============================================================================
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II. Building the Simple DirectMedia Layer libraries using the arm
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cross-compiler
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This is somewhat tricky since the name of the compiler binaries
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differ from the standard. Also you should disable features not
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needed. The command below works for me. Note that it's all one
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line. You can also set the NM, LD etc environment variables
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separately.
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NM=arm-linux-nm LD=arm-linux-ld CC=arm-linux-gcc CXX=arm-linux-g++ RANLIB=arm-linux-ranlib AR=arm-linux-ar ./configure --enable-video-qtopia --disable-video-dummy --disable-video-fbcon --disable-video-dga --disable-arts --disable-esd --disable-alsa --disable-cdrom --disable-video-x11 --disable-nasm --prefix=/opt/Qtopia/sharp/ arm-unknown-linux-gnu
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One thing to note is that the above configure will include joystick
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support, even though you can't have joysticks on the Zaurus. The
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reason for this is to avoid link / compile / runtime errors with
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applications that have joystick support.
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==============================================================================
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III. Building the Simple DirectMedia Layer test programs:
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After installing, making sure the correct sdl-config is in your
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path, run configure like this:
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NM=arm-linux-nm LD=arm-linux-ld CC=arm-linux-gcc CXX=arm-linux-g++ AR=arm-linux-ar ./configure arm-unknown-linux-gnu
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==============================================================================
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IV. Application porting notes
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One thing I have noticed is that applications sometimes don't exit
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correctly. Their icon remains in the taskbar and they tend to
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relaunch themselves automatically. I believe this problem doesn't
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occur if you exit your application using the exit() method. However,
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if you end main() with 'return 0;' or so, this seems to happen.
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Also note that when running in landscape mode - i.e requesting a
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window that is HEIGHT pixels wide and WIDTH pixels high, where WIDTH
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and HEIGHT normally is 240 and 320 - the image is blitted so that
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the hardware buttons are on the left side of the display. This might
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not always be desirable but such is the code today.
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==============================================================================
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V. Enjoy! :)
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If you have a project you'd like me to know about, or want to ask questions,
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go ahead and join the SDL developer's mailing list by sending e-mail to:
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sdl-request@libsdl.org
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and put "subscribe" into the subject of the message. Or alternatively you
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can use the web interface:
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http://www.libsdl.org/mailman/listinfo/sdl
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==============================================================================
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VI. What is supported:
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Keyboard (Sharp Zaurus)
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Hardware buttons
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Stylus input (mouse)
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Video. Allows fullscreen both in portrait mode (up to WIDTHxHEIGHT
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size window) and in landscape mode (up to HEIGHTxWIDTH).
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All other SDL functionality works like a normal Linux system (threads,
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audio etc).
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--
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David Hedbor <david@hedbor.org>
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http://david.hedbor.org/ http://eongames.com/
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