Re: [KOS] Problems compiling SDL 2 samples

SourceForge Headquarters 225 Broadway Suite 1600 San Diego, CA 92101 +1 (858) 422-6466

Nevermind, everything is statically linked isn't it - so what I'm asking
for doesn't make any sense! Ignore me :)

On 20 February 2016 at 10:16, Luke Benstead <ka...@gm...> wrote:

> OK, so I've made some progress and have successfully compiled an SDL 2
> sample - it runs and gives me a black screen but as I only have an SD card
> reader and no coders cable I have no way to debug that...
>
> Anyway, one thing that I can't figure out is that in the SDL 1.x port if
> HAVE_OPENGL is defined a function called glKosGetProcAddress is used - I
> can't find any reference to that function anywhere and I'm pretty sure it
> doesn't work if you compile with that setting.
>
> So, what would be the equivalent of GetProcAddress on Kos? dlopen doesn't
> seem to exist, does Kos have something similar?
>
> On 11 February 2016 at 13:28, Lawrence Sebald <blu...@gm...> wrote:
>
>> Those are fairly easily explained…
>>
>> Environment variables are not supported in KOS, so getenv/setenv don't
>> actually exist in libkallisti. Don’t define HAVE_GETENV and HAVE_SETENV in
>> your SDL_config_dreamcast.h file. SDL has a built-in implementation that
>> will be compiled in if you don’t define those.
>>
>> The second one should go away if you link with libm.
>>
>> On Feb 11, 2016, at 5:06 AM, Luke Benstead <ka...@gm...> wrote:
>>
>> Thank you! I've disabled DYNAMIC_API on the DC, and I realized that
>> __DREAMCAST__ is not what I should be checking for, but _arch_dreamcast
>> (facepalm).
>>
>> Now I'm down to a couple of atomic-related SDL references, and stuff like
>> this:
>>
>> /home/lukeb/Dreamcast/kos-ports/SDL2/build/SDL2-2.0.4/libSDL2.a(SDL_getenv.o):
>> In function `SDL_getenv':
>> /home/lukeb/Dreamcast/kos-ports/SDL2/build/SDL2-2.0.4/src/stdlib/SDL_getenv.c:182:
>> undefined reference to `_getenv'
>> /home/lukeb/Dreamcast/kos-ports/SDL2/build/SDL2-2.0.4/libSDL2.a(SDL_stdlib.o):
>> In function `SDL_atan2':
>> /home/lukeb/Dreamcast/kos-ports/SDL2/build/SDL2-2.0.4/src/stdlib/SDL_stdlib.c:48:
>> undefined reference to `_atan2'
>>
>>
>> Which I'm guessing is down to me not linking a KOS library or something?
>> I'll take a look later when I find time. Thanks again!
>>
>> On 11 February 2016 at 08:45, Harley Laue <los...@gm...>
>> wrote:
>>
>>> $ make
>>> rm -f example.elf
>>> kos-cc -o example.elf testdraw2.o -lSDL2
>>> testdraw2.o: In function `DrawPoints':
>>> /usr/local/dc/kos-ports/SDL2-test/build/SDL2-2.0.4/test/testdraw2.c:79:
>>> undefined reference to `_SDL_RenderGetViewport'
>>> ...
>>> /usr/local/dc/kos-ports/SDL2-test/build/SDL2-2.0.4/test/testdraw2.c:299:
>>> undefined reference to `_SDL_atoi'
>>> collect2: error: ld returned 1 exit status
>>> Makefile:28: recipe for target 'example.elf' failed
>>> make: *** [example.elf] Error
>>> $ sh-elf-nm $KOS_PORTS/lib/libSDL2.a | grep -E "(RenderGetViewport|atoi)"
>>>          U _SDL_atoi_REAL
>>>          U _SDL_atoi_REAL
>>>          U _SDL_atoi_REAL
>>>          U _SDL_atoi_REAL
>>>          U _SDL_atoi_REAL
>>> 00000000 T _SDL_RenderGetViewport_REAL
>>>          U _atoi
>>> 00000000 T _SDL_atoi_REAL
>>>          U _SDL_atoi_REAL
>>>
>>> $ grep -Er "(RenderGetViewport_REAL|SDL_atoi_REAL)"
>>> src/dynapi/SDL_dynapi_overrides.h:#define SDL_RenderGetViewport
>>> SDL_RenderGetViewport_REAL
>>> src/dynapi/SDL_dynapi_overrides.h:#define SDL_atoi SDL_atoi_REAL
>>>
>>>
>>> From what I can tell, SDL2 wants SDL_dynapi defined for all platforms.
>>>
>>>
>>> On 02/10/2016 08:13 AM, Luke Benstead wrote:
>>>
>>> Thanks OK, I just wanted to make sure that what I was doing in the
>>> makefile wasn't obviously wrong... I'll keep digging! Thanks!
>>>
>>> On 10 February 2016 at 15:34, Lawrence Sebald <blu...@gm...>
>>> wrote:
>>>
>>>> Unfortunately, I have no idea why you’d be having that particular issue
>>>> off the top of my head. It looks like you’re compiling in the SDL_render.c
>>>> file into your library, which is where those functions are implemented, so
>>>> I don’t really know…
>>>>
>>>> The only thing I can guess is that somehow you’re picking up an old
>>>> version of the library where you didn’t compile that in or something? Try
>>>> rebuilding the entire library and then the program again?
>>>>
>>>> I really know next to nothing about SDL2, which I suppose doesn’t help
>>>> here...
>>>>
>>>> On Feb 10, 2016, at 4:03 AM, Luke Benstead <ka...@gm...> wrote:
>>>>
>>>> Hi there!
>>>>
>>>> I've managed to get the SDL 2 port to a state where it compiles, but is
>>>> untested. My SD card adapter just arrived so I figured I'd try to compile
>>>> one of the SDL 2 sample applications to test the port.
>>>>
>>>> I added the following target to the KOSMakefile.mk file:
>>>>
>>>>
>>>> defaultall: replacefiles $(OBJS) subdirs linklib buildsamples
>>>>
>>>> TESTDRAW2_SRCS = $(CURDIR)/test/testdraw2.c
>>>> TESTDRAW2_OBJS = $(CURDIR)/test/testdraw2.o
>>>> TESTDRAW2_TARGET = testdraw2.elf
>>>>
>>>> buildsamples:
>>>>     $(KOS_CC) $(CFLAGS) -Iinclude -c $(TESTDRAW2_SRCS) -o
>>>> $(TESTDRAW2_OBJS)
>>>>     $(KOS_CC) $(KOS_CFLAGS) $(KOS_LDFLAGS) -L$(CURDIR) -Iinclude -o
>>>> $(TESTDRAW2_TARGET) $(KOS_START) $(TESTDRAW2_OBJS) $(KOS_LIBS) -lSDL2
>>>>
>>>> No matter what incantation I use to build the source file, I still end
>>>> up with undefined references to the SDL 2 functions. e.g.
>>>>
>>>> /home/lukeb/Dreamcast/kos-ports/SDL2/build/SDL2-2.0.4/test/testdraw2.o:
>>>> In function `_DrawPoints':
>>>> testdraw2.c:(.text+0x1a0): undefined reference to
>>>> `_SDL_RenderGetViewport'
>>>> testdraw2.c:(.text+0x1b8): undefined reference to
>>>> `_SDL_SetRenderDrawColor'
>>>> testdraw2.c:(.text+0x1c4): undefined reference to `_SDL_RenderDrawPoint'
>>>>
>>>>
>>>> Am I missing something obvious? Grepping for those functions does find
>>>> them in libSDL2.a which I'm linking to. I've tried changing the order of
>>>> the GCC args, and also tried just compiling the source file directly rather
>>>> than to an object file first.
>>>>
>>>> I'd appreciate any suggestions you might have!
>>>>
>>>> Thanks,
>>>>
>>>> Luke.
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Site24x7 APM Insight: Get Deep Visibility into Application Performance
>>>> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
>>>> Monitor end-to-end web transactions and take corrective actions now
>>>> Troubleshoot faster and improve end-user experience. Signup Now!
>>>>
>>>> http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140_______________________________________________
>>>> cadcdev-kallistios mailing list
>>>> cad...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/cadcdev-kallistios
>>>>
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>> Site24x7 APM Insight: Get Deep Visibility into Application Performance
>>>> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
>>>> Monitor end-to-end web transactions and take corrective actions now
>>>> Troubleshoot faster and improve end-user experience. Signup Now!
>>>> http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140
>>>> _______________________________________________
>>>> cadcdev-kallistios mailing list
>>>> cad...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/cadcdev-kallistios
>>>>
>>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Site24x7 APM Insight: Get Deep Visibility into Application Performance
>>> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
>>> Monitor end-to-end web transactions and take corrective actions now
>>> Troubleshoot faster and improve end-user experience. Signup Now!http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140
>>>
>>>
>>>
>>> _______________________________________________
>>> cadcdev-kallistios mailing lis...@li...https://lists.sourceforge.net/lists/listinfo/cadcdev-kallistios
>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Site24x7 APM Insight: Get Deep Visibility into Application Performance
>>> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
>>> Monitor end-to-end web transactions and take corrective actions now
>>> Troubleshoot faster and improve end-user experience. Signup Now!
>>> http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140
>>> _______________________________________________
>>> cadcdev-kallistios mailing list
>>> cad...@li...
>>> https://lists.sourceforge.net/lists/listinfo/cadcdev-kallistios
>>>
>>>
>>
>> ------------------------------------------------------------------------------
>> Site24x7 APM Insight: Get Deep Visibility into Application Performance
>> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
>> Monitor end-to-end web transactions and take corrective actions now
>> Troubleshoot faster and improve end-user experience. Signup Now!
>>
>> http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140_______________________________________________
>> cadcdev-kallistios mailing list
>> cad...@li...
>> https://lists.sourceforge.net/lists/listinfo/cadcdev-kallistios
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Site24x7 APM Insight: Get Deep Visibility into Application Performance
>> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
>> Monitor end-to-end web transactions and take corrective actions now
>> Troubleshoot faster and improve end-user experience. Signup Now!
>> http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140
>> _______________________________________________
>> cadcdev-kallistios mailing list
>> cad...@li...
>> https://lists.sourceforge.net/lists/listinfo/cadcdev-kallistios
>>
>>
>