[KOS] Problems compiling SDL 2 samples

[Luke B. <ka...@gm...>]

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.