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Date: Sun, 1 Jun 2003 15:38:45 -0700 (PDT) From: Jeff Brown <jabrown@caida.org> Subject: [patch] SDL-1.2.5 + FreeBSD joystick axes, hat fixes Hello again! When I sent in some SDL fixes last December, I found out they'd already been fixed in the CVS version. This time, I checked the repository before bugging you. =) I'm using SDL-1.2.5 on a FreeBSD 4.6.2-RELEASE system, and in the course of getting my multi-analog-axis USB controller (with a hat switch!) working with d2x-sdl -- the SDL port of the Descent 2 engine -- I came across a few problems: 1) The second analog stick is reported as a slider in one direction, and "Rz" in the other. SDL was ignoring the Rz axis, so I added Rx/Ry/Rz to the set of things SDL considers to be axes. 2) After the above change, the set of JOYAXE_* axes for my gamepad was {0,1,3,7}; however, d2x-sdl expects the axes to be contiguously numbered from 0, which seems like a pretty reasonable expectation, rather than having to scan the entire space of axes that SDL may or may not have. So, I added a table lookup which maps the JOYAXE_* axis numbers to 0,1,... in the order they're detected by SDL_SYS_JoystickOpen(), when reporting them to the application. I also added a function "usage_to_joyaxe()" which maps the USB HUG_* usage values to JOYAXE_values, since the repeated case statements testing for HUG_* were getting out of hand. 3) The BSD joystick driver had no hat support, so I added it. It looks like our USB library can only support one hat switch per device, which makes life easy. The patch against SDL-1.2.5 which implements these changes is at: http://www.caida.org/~jabrown/patches/sdl-1.2.5-bsdhat.diff After applying, SDL's "testjoystick" reports all activity from my gamepad correctly, and d2x works too (though it needed some other fixes). Moving on... There is also a problem with slightly different USBHID library interfaces on different versions of FreeBSD. I wasn't going to mention this since the FreeBSD port for SDL-1.2.5 (and not SDL itself) was doing the FreeBSD version-specific patching, so I e-mailed the port maintainer with this change. However, I see that you've incorporated the FreeBSD version-checking stuff into the CVS version of SDL, so now it's relevant for you too. The problem is, the FreeBSD #if tests don't work right for FreeBSD 4.6.2-RELEASE. There may be other versions with this problem, but I've only tested 4.6.2-R. The following patch against your latest CVS version fixes this: --- SDL_sysjoystick.c-1.16 Tue Apr 15 09:02:08 2003 +++ SDL_sysjoystick.c Sun Jun 1 15:10:28 2003 @@ -420,6 +420,8 @@ # else len = hid_report_size(rd, repinfo[repind].kind, r->rid); # endif +# elif (__FreeBSD_version == 460002) + len = hid_report_size(rd, r->rid, repinfo[repind].kind); # else len = hid_report_size(rd, repinfo[repind].kind, &r->rid); #endif I hope this is all useful to you. I've been getting myself dizzy playing Descent 2 with it, all morning! -Jeff Brown P.S. My USB controller is a Thrustmaster Firestorm Dual Analog 2. That's probably irrelevant, but I threw it in for completeness.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 02 Jun 2003 14:50:22 +0000
parents 25f475cd4981
children de622b7108bf
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <title>Building SDL with Borland's C++ compilers</title>
                    
  <meta name="author"
 content="David Snopek and updated by Dominique Louis.">
</head>
  <body>
   <xevol @newtonave.net="">      </xevol>   
<h1>Building SDL with Borland's C++ compilers. </h1>
    <b> by <a href="mailto:xevol@users.sourceforge.net"> David Snopek</a></b> 
   and updated by <b><a href="mailto:Dominique@SavageSoftware.com.au">Dominique 
 Louis</a></b>.<br>
    <br>
     These instructions cover how to compile SDL and its included test programs 
 using either  Borland <a href="#bcbwin">C++ Builder 5, 6 for Windows</a>, 
<a href="#k3">C++ Builder for Linux  ( AKA Kylix 3 )</a> or the free <a
 href="#bccc">Borland C++ command-line compiler</a>. <br>
        
<h3> <b> Extract the files </b> </h3>
        
<p> Unzip the Borland.zip archive into <b>this</b> directory.  Do not unzip 
 it into any  other directory because the makefiles ( *.mak ) and project 
files ( *.bpr ) use relative paths to refer to the SDL sources.  This  should 
create a directory named "Borland" inside of the top level SDL source directory. 
  </p>
        
<h3> <b><a name="bcbwin"></a> Using Borland C++ Builder 5, 6 for Windows </b>
</h3>
        
<p> Inside of the "Borland" directory there is a "bcb6" directory that contains 
 a number  of Builder project files.  Double-click on the "libSDL.bpg" file 
 icon.  Once Builder has  started click on the "<u>P</u>rojects" menu on the
 menu-bar and go down to  "B<u>u</u>ild All Projects" option.  <br>
 This will proceed  to build SDL ( with Borland's calling convention ), SDLmain, 
and all  the <a href="#tests">test programs</a>. Currently, all the <a
 href="#tests">test programs</a> 
are dynamically linked to Sam Lantinga's SDL.dll.</p>
 
<p><b>NOTE :</b> Borland's "lib" format and Microsoft's "lib" format are incompatible.
&nbsp;<br>
 If you wish to dynamically link to the SDL library supplied by Sam Lantinga 
in each release, I have created the correct *.libs for SDL 1.2.4 and they 
exist in the "/lib" directory.<br>
 If you would like to create the *.lib files yourself, you will need to make 
use of Borland's "implib.exe" utility.<br>
 </p>
 
<p><tt>IMPLIB</tt> works like this: </p>
   
<pre>    IMPLIB (destination lib name) (source dll)<br></pre>
   
<p> For example,</p>
   
<pre>    IMPLIB SDL.lib SDL.dll<br></pre>
 
<p>This assumes that SDL.dll was compiled with Visual C++ or similar.<br>
 </p>
 
<p>To learn more about the difference between Borland's and Microsoft's *.lib 
format please read the article <a
 href="http://www.bcbdev.com/articles/vcdll.htm">here</a>.<br>
 </p>
 
<p>  <b><br>
 NOTE :</b> The C++ Builder for Windows project format, is not compatible
with the Kylix  3 project format, hence the reason why they are in separate
directories.</p>
        
<h3> <b><a name="bccc"></a> Using the free Borland C++ command-line compiler 
</b> </h3>
        
<p> The free Borland compiler can be downloaded at no charge from <a
 href="http://www.borland.com/bcppbuilder/freecompiler/"> the  Borland website 
 </a>.  Make sure that it is installed and properly configured. </p>
        
<p> Open an MS-DOS Prompt.  Change to the "Borland\freebcc" directory under 
 the  SDL source directory.  Type "make -f SDL.mak" to build SDL and "make 
 -f  SDLmain.mak".  There are also makefiles for all of the <a
 href="#tests">test  programs</a>, if you wish to build them. </p>
        
<h3> <b> Output files </b> </h3>
     No matter which compiler you used, three important files should have 
been  produced:      
<ul>
    	<li> SDL.dll ( Borland format ) </li>
    	<li> SDL.lib&nbsp;( Borland format ) </li>
    	<li> SDLmain.lib&nbsp;( Borland format ) </li>
       
</ul>
     Both of the *.lib files will need to be added to all the projects that 
 use SDL and SDL.dll  must be placed some where the Windows dynamic linker 
 can find it (either in your  project directory or on the system path, C:\WINDOWS\SYSTEM). 
   
<h3> <b><a name="k3"></a> Using Borland C++ Builder for Linux ( AKA Kylix 
3 ) </b> </h3>
          
<p> Inside of the "Borland" directory there is a "k3" directory that contains 
 a number  of Builder project files.  Double-click on the "libSDL.bpg" file 
 icon.  Once Builder has  started click on the "<u>P</u>rojects" menu on the
 menu-bar and go down to  "B<u>u</u>ild All Projects" option.  This will proceed
 to build all  the <a
 href="#tests">test programs</a>.&nbsp;<br>
 Linux  users do not need *.lib files as the Shared Object is linked right 
into the  project ( very neat actually, Windows should do this sort of thing 
as it is a lot easier for the developer ).  <br>
    <b>NOTE :</b>&nbsp;The C++ Builder for Windows project format, is not
compatible with the Kylix  3 project format, hence the reason why they are
in separate directories.</p>
       
<p> On Mandrake 8.1 the shared objects for SDL are located in the /usr/lib 
 directory as libSDL_*.so and the Mesa OpenGL shared objects are located in
 /usr/X11R6/lib as libGL*.so<br>
     <br>
     So if your setup is different you may need to change the project file
 so that they re-link to the ones on your system.<br>
     <br>
     On Mandrake 8.1 the headers files are located at /usr/include/SDL/.
So  if you you have not installed the development RPMs ( usually named libSDL-devel*
  ) for SDL ( not included ) you may have to change the include directory
within  some of the projects.<br>
 </p>
 
<h3> Known Problems</h3>
   The only known problem is that I ( Dominique Louis ), was unable to create 
the projects that rebuilt the SDL shared objects under Linux, due to time 
constraints and my lack of intimate knowledge of Linux.   
<h3><a name="tests"><b> Test programs </b> </a></h3>
 Some of the test programs require included media files ( *.wav; *.bmp etc 
 ).  Before trying to run any of the  test programs, copy these media files 
 from the "tests/" directory into the Borland build directory that you extracted 
 the project files to.  <br>
   <br>
</body>
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