Re: [KOS] Problems compiling SDL 2 samples

[Lawrence S. <blu...@gm...>]

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.
> 
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