Porting SDL2 to Amiga

[copse]

There's a new rewritten version of SDL that has been released, SDL2.

If someone got it working on Amiga, then all the games which can be easily ported using it to other platforms (Windows, Linux, Android, iOS, ...) could be easily gotten to work on the Amiga.

Anyone willing to do the work?

[emufan]

Did anyone try to build it for m68k-amigaos?
it is possible to build it without 3D support, at least it was done for MorphOS.
there is no src code included, so I cannot check the config.log or other usefull things :/

I try to build 2.0.7 - but run into trouble when running the ./configure script:

CC=m68k-amigaos-gcc.exe ./configure --host=m68k-amigaos --disable-shared
....
checking for GCC -Wall option... yes
checking for necessary GCC -Wno-multichar option... no
configure: error:
*** Unsupported host:  Please add to configure.in

in configure.in I've added:

            *-*-amigaos*)       ARCH=linux ;;				
            *-*-linux*)         ARCH=linux ;;
            *-*-uclinux*)       ARCH=linux ;;
tested also:
            *-*-amigaos*)       ARCH=amigaos ;;				
            *-*-linux*)         ARCH=linux ;;
            *-*-uclinux*)       ARCH=linux ;;

and run 'autoconf' but still the error persists.
does anyone know how to add host/ARCH amigaos to the configure script?

#1) i found two more location in configure.in to add "amigaos"

checking for Altivec with GCC -faltivec option... no
checking for GCC -Wall option... yes
checking for necessary GCC -Wno-multichar option... no
checking for GCC -fvisibility=hidden option... no
checking for GCC -Wdeclaration-after-statement option... no
checking for dlopen... no

good news, 1st step taken, we have a Makefile:

SDL2 Configure Summary:
Building Static Libraries
Enabled modules : atomic audio video render events joystick haptic power
                               filesystem threadstimers file loadso cpuinfo assembly
Assembly Math   :
Audio drivers   : disk dummy
Video drivers   : dummy vulkan
Input drivers   :
Using libsamplerate : NO
Using libudev       : NO
Using dbus          : NO
Using ime           : YES
Using ibus          : NO
Using fcitx         : NO

#1) this wont be an easy thing. Makefile is in some parts a bit strange .
'make -k' let it build some objct files. but thats about it. too many errors (gcc3.4 and gcc6)
thats too much pain and frustration for 5+ functions I need to build another emulator

[Marlon_]

Originally Posted by emufan

#1) this wont be an easy thing. Makefile is in some parts a bit strange .
'make -k' let it build some objct files. but thats about it. too many errors (gcc3.4 and gcc6)
thats too much pain and frustration for 5+ functions I need to build another emulator

Apps/Games built for SDL2 are most likely programmed with a modern computer in mind. It'll be sluggish and not really worth your time and effort, unless you put your heart and soul into optimizing it.

Porting SDL2 to AmigaOS 3.x would probably be easier if their SDL2 port was used as a base.

Honestly, it ain't that hard to convert an application from SDL2 to SDL1.2 if you put a little effort into it. And most of the open source games using SDL2 has most likely been updated from SDL1.2 to SDL2 at some point, so you can backtrack the changes and reimplement SDL1.2 fairly easily.

Which is what I did with MilkyTracker.

[emufan]

it's just a plus/4 emulator. so nothing special. 20 out of 25 src files I can build.
remaining deal with keyboard/interface and initializing audio/video.

just found this one: SDL2 for AmigaOS 4 uses some code from sdl 1.2 for audio and joystick.