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ドル/Month >> Monitor end-to-end web transactions and take corrective actions now >> Troubleshoot faster and improve end-user experience. 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