README.Porting
author Sam Lantinga <slouken@libsdl.org>
Tue, 09 May 2006 07:26:58 +0000
changeset 1790 828a17e05192
parent 1484 b2b476a4a73c
child 1946 103760c3a5dc
permissions -rw-r--r--
Date: Mon, 8 May 2006 14:19:30 -0700
From: Bob Ippolito
Subject: SDL trunk (r2346) and Mac OS X

The current state of the trunk doesn't quite compile on Mac OS X,
I've attached a series of patches that gets it to compile and kills a
few warnings.

sdl-trunk-r2346-dlcompat-warnings.diff:
The dlcompat thing is just loaded with incorrect type signatures ..
some of them have changed since 10.2 and others are just flat wrong.
This puts it in sync with the latest headers. People on 10.2 will get
the warnings instead of people with new kits.
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* Porting To A New Platform
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  The first thing you have to do when porting to a new platform, is look at
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include/SDL_platform.h and create an entry there for your operating system.
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The standard format is __PLATFORM__, where PLATFORM is the name of the OS.
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Ideally SDL_platform.h will be able to auto-detect the system it's building
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on based on C preprocessor symbols.
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There are two basic ways of building SDL at the moment:
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1. The "UNIX" way:  ./configure; make; make install
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   If you have a GNUish system, then you might try this.  Edit configure.in,
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   take a look at the large section labelled:
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	"Set up the configuration based on the target platform!"
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   Add a section for your platform, and then re-run autogen.sh and build!
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2. Using an IDE:
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   If you're using an IDE or other non-configure build system, you'll probably
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   want to create a custom SDL_config.h for your platform.  Edit SDL_config.h,
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   add a section for your platform, and create a custom SDL_config_{platform}.h,
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   based on SDL_config.h.minimal and SDL_config.h.in
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   Add the top level include directory to the header search path, and then add
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   the following sources to the project:
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	src/*.c
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	src/audio/*.c
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	src/cdrom/*.c
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	src/cpuinfo/*.c
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	src/events/*.c
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	src/file/*.c
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	src/joystick/*.c
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	src/stdlib/*.c
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	src/thread/*.c
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	src/timer/*.c
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	src/video/*.c
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	src/audio/disk/*.c
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	src/video/dummy/*.c
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	src/joystick/dummy/*.c
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	src/cdrom/dummy/*.c
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	src/thread/generic/*.c
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	src/timer/dummy/*.c
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	src/loadso/dummy/*.c
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Once you have a working library without any drivers, you can go back to each
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of the major subsystems and start implementing drivers for your platform.
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If you have any questions, don't hesitate to ask on the SDL mailing list:
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	http://www.libsdl.org/mailing-list.php
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Enjoy!
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	Sam Lantinga				(slouken@libsdl.org)
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