The Simple DirectMedia Layer (SDL for short) is a cross-platform

library designed to make it easy to write multi-media software,

such as games and emulators.

The Simple DirectMedia Layer library source code is available from:

http://www.libsdl.org/

This library is distributed under the terms of the GNU LGPL license:

http://www.gnu.org/copyleft/lesser.html

This packages contains the SDL.framework for OS X.

Conforming with Apple guidelines, this framework

contains both the SDL runtime component and development header files.

To Install:

Copy the SDL.framework to /Library/Frameworks

You may alternatively install it in <Your home directory>/Library/Frameworks

if your access privileges are not high enough.

(Be aware that the Xcode templates we provide in the SDL Developer Extras

package may require some adjustment for your system if you do this.)

Known Issues:

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(Partial) History of PB/Xcode projects:

2006-05-09 - Added shell script phase to deal with new SDL_config.h

behavior. Encountered what seems to be an Xcode bug with

multiple files of the same name, even when conditional compiling

is controlled by custom #defines (SDL_sysloadso.c). Multiple or

undefined symbols are the result of this.

Recommended that macosx/SDL_sysloadso.c be modified to directly

include the dlopen version of the file via #ifdef's so only

one version needs to exist. Filed a formal bug report with Apple

about this (4542369).

2006-03-22 - gcc 4 visibility features have been added to the code base so I

enabled the switch in Xcode to take advantage of it. Be aware that only

our x86 builds will be exposed to this feature as we still build ppc

with gcc 3.3.

Christian Walther has sent me some great feedback on things that are

broken, so I have made some of these fixes. Among the issues are

compatibility and current library versions are not set to 1 (breaks

backwards compatibility), documentation errors, resource copying

location problems for the SDLTest apps, missing HAVE_OPENGL and

OpenGL.framework linking in testgl.

(Eric Wing)

2006-03-17 - Because the X11 headers are not installed by default with Xcode,

we decided to offer two variants of the same targets (one with X11 stuff

and one without). By default, since the X11 stuff does not necessarily

conflict with the native stuff, we build the libraries with the X11 stuff

so advanced developers can access it by default. However, in the case

that a developer did not install X11 (or just doesn't want the extra bloat),

the user may directly select those targets and build those instead.

Once again, we are attempting to remove the exported symbols file. If

I recall correctly, the clashing symbol problems we got were related

to the CD-ROM code which was formerly in C++. Now that the C++ code

has been purged, we are speculating that we might be able to remove

the exports file safely. The long term solution is to utilize gcc 4's

visibility features.

For the developer extras package, I changed the package format

from a .pkg based installer to a .dmg to avoid requiring

administrator/root to access contents, for better

transparency, and to allow users to more easily control which components

they actually want to install.

I also made changes and updates to the PB/Xcode project templates (see Developer ReadMe).

(Eric Wing)

2006-03-07 - The entire code base has been reorganized and platform specific

defines have been pushed into header files (SDL_config_*.h). This means

that defines that previously had to be defined in the Xcode projects can

be removed (which I have started doing). Furthermore, it appears that the

MMX/SSE code has been rewritten and refactored so it now compiles without

nasm and without making us do strange things to support OS X. However, this

Xcode project still employs architecture specific build options in order to

achieve the mandated 10.2 compatibility. As a result of the code base changes,

there are new public headers. But also as a result of these changes, there are

also new headers that qualify as "PrivateHeaders". Private Headers are headers

that must be exported because a public header includes them, but users shouldn't

directly invoke these. SDL_config_macosx.h and SDL_config_dreamcast.h are

examples of this. We have considered marking these headers as Private, but it

requires that the public headers invoke them via framework conventions, i.e.

#include <FrameworkName/Header.h>

e.g.

#include <SDL/SDL_config_macosx.h>

and not

#include "SDL_config_macosx.h"

However this imposes the restriction that non-framework distributions must

place their headers in a directory called SDL/ (and not SDL11/ like FreeBSD).

Currently, I do not believe this would pose a problem for any of the current

distributions (Fink, DarwinPorts). Or alternatively, users could be

expected/forced to also include the header path:

-I/Library/Frameworks/SDL.framework/PrivateHeaders,

but most people would probably not read the documentation on this.

But currently, we have decided to be conservative and have opted not to

use the PrivateHeaders feature.

(Eric Wing)

2006-01-31 - Updates to build Universal Binaries while retaining 10.2 compatibility.

We were unable to get MMX/SSE support enabled. It is believed that a rewrite of

the assembly code will be necessary to make it position independent and not

require nasm. Altivec has finally been enabled for PPC. (Eric Wing)

2005-09-?? - Had to add back the exports file because it was causing build problems

for some cases. (Eric Wing)

2005-08-21 - First entry in history. Updated for SDL 1.2.9 and Xcode 2.1. Getting

ready for Universal Binaries. Removed the .pkg system for .dmg for due to problems

with broken packages in the past several SDL point releases. Removed usage of SDL

exports file because it has become another point of failure. Introduced new documentation

about SDLMain and how to compile in an devel-lite section of the SDL.dmg. (Eric Wing)

Before history:

SDL 1.2.6? to 1.2.8

Started updating Project Builder projects to Xcode for Panther and Tiger. Also removed

the system that split the single framework into separate runtime and headers frameworks.

This is against Apple conventions and causes problems on multiuser systems.

We now distribute a single framework.

The .pkg system has repeatedly been broken with every new release of OS X.

With 1.2.8, started migrating stuff to .dmg based system to simplify distribution process.

Tried updating the exports file and Perl script generation system for changing syntax. (Eric Wing)

Pre-SDL 1.2.6

Created Project Builder projects for SDL and .pkg based distribution system. (Darrell Walisser)