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 (a] 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 (a] hedbor.org> 83 http://david.hedbor.org/ http://eongames.com/ 84 85
