README.Qtopia
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     1 
       
     2 ==============================================================================
       
     3 Using the Simple DirectMedia Layer with Qtopia/OPIE
       
     4 ==============================================================================
       
     5 
       
     6 ==============================================================================
       
     7 I.  Setting up the Qtopia development environment.
       
     8 
       
     9   This document will not explain how to setup the Qtopia development
       
    10   environment. That is outside the scope of the document. You can read
       
    11   more on this subject in this excellent howto:
       
    12 
       
    13 	http://www.zauruszone.com/howtos/linux_compiler_setup_howto.html
       
    14 
       
    15 ==============================================================================
       
    16 II.  Building the Simple DirectMedia Layer libraries using the arm
       
    17      cross-compiler
       
    18 
       
    19   This is somewhat tricky since the name of the compiler binaries
       
    20   differ from the standard. Also you should disable features not
       
    21   needed. The command below works for me. Note that it's all one
       
    22   line. You can also set the NM, LD etc environment variables
       
    23   separately.
       
    24 
       
    25 	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
       
    26 
       
    27   One thing to note is that the above configure will include joystick
       
    28   support, even though you can't have joysticks on the Zaurus. The
       
    29   reason for this is to avoid link / compile / runtime errors with
       
    30   applications that have joystick support.
       
    31 
       
    32 ==============================================================================
       
    33 III.  Building the Simple DirectMedia Layer test programs:
       
    34 
       
    35   After installing, making sure the correct sdl-config is in your
       
    36   path, run configure like this:
       
    37 
       
    38 	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
       
    39 
       
    40 ==============================================================================
       
    41 IV.  Application porting notes
       
    42 
       
    43   One thing I have noticed is that applications sometimes don't exit
       
    44   correctly. Their icon remains in the taskbar and they tend to
       
    45   relaunch themselves automatically. I believe this problem doesn't
       
    46   occur if you exit your application using the exit() method. However,
       
    47   if you end main() with 'return 0;' or so, this seems to happen.
       
    48 
       
    49   Also note that when running in landscape mode - i.e requesting a
       
    50   window that is HEIGHT pixels wide and WIDTH pixels high, where WIDTH
       
    51   and HEIGHT normally is 240 and 320 - the image is blitted so that
       
    52   the hardware buttons are on the left side of the display. This might
       
    53   not always be desirable but such is the code today.
       
    54 
       
    55 
       
    56 ==============================================================================
       
    57 V.  Enjoy! :)
       
    58 
       
    59   If you have a project you'd like me to know about, or want to ask questions,
       
    60   go ahead and join the SDL developer's mailing list by sending e-mail to:
       
    61 
       
    62 	sdl-request@libsdl.org
       
    63 
       
    64   and put "subscribe" into the subject of the message. Or alternatively you
       
    65   can use the web interface:
       
    66 
       
    67 	http://www.libsdl.org/mailman/listinfo/sdl
       
    68   
       
    69 ==============================================================================
       
    70 VI.  What is supported:
       
    71 
       
    72 Keyboard (Sharp Zaurus)
       
    73 Hardware buttons
       
    74 Stylus input (mouse)
       
    75 Video. Allows fullscreen both in portrait mode (up to WIDTHxHEIGHT
       
    76 size window) and in landscape mode (up to HEIGHTxWIDTH). 
       
    77 
       
    78 All other SDL functionality works like a normal Linux system (threads,
       
    79 audio etc).
       
    80 
       
    81 -- 
       
    82 David Hedbor <david@hedbor.org>
       
    83 http://david.hedbor.org/ 	http://eongames.com/
       
    84