Mine

# settings
dprint = 1
# profile = 1
use_musashi = 1

DEFINC = -I../.. -I. -D__GP2X__ -D_UNZIP_SUPPORT # -DBENCHMARK
GCC = gcc
STRIP = strip
AS = gcc
LD = ld
OBJCOPY = objcopy

COPT_COMMON = -static -O3 -ftracer -fstrength-reduce -Wall -funroll-loops -fomit-frame-pointer -fstrict-aliasing -ffast-math # -s
COPT = $(COPT_COMMON) -mtune=arm920t
SOPT = -mcpu=arm920t -mfloat-abi=soft

# gtk
COPT    += `pkg-config --cflags gtk+-2.0`
LDFLAGS += `pkg-config --libs gtk+-2.0`
COPT    += `pkg-config --cflags gthread-2.0`
LDFLAGS += `pkg-config --libs gthread-2.0`

# frontend
OBJS += ../gp2x/main.o ../gp2x/menu.o ../gp2x/fonts.o ../gp2x/emu.o ../gp2x/usbjoy.o blit.o gp2x.o 940ctl_ym2612.o
# Pico
OBJS += ../../Pico/Area.o ../../Pico/Cart.o ../../Pico/Utils.o ../../Pico/Memory.o ../../Pico/Misc.o \
        ../../Pico/Pico.o ../../Pico/Sek.o ../../Pico/VideoPort.o ../../Pico/Draw2.o ../../Pico/Draw.o \
        ../../Pico/Patch.o
# Pico - CD
OBJS += ../../Pico/cd/Pico.o ../../Pico/cd/Memory.o ../../Pico/cd/Sek.o ../../Pico/cd/LC89510.o \
        ../../Pico/cd/cd_sys.o ../../Pico/cd/cd_file.o ../../Pico/cd/gfx_cd.o \
        ../../Pico/cd/Area.o ../../Pico/cd/Misc.o ../../Pico/cd/pcm.o ../../Pico/cd/buffering.o
# Pico - sound
OBJS += ../../Pico/sound/sound.o ../../Pico/sound/sn76496.o ../../Pico/sound/ym2612.o ../../Pico/sound/mix.o
# zlib
OBJS += ../../zlib/gzio.o ../../zlib/inffast.o ../../zlib/inflate.o ../../zlib/inftrees.o ../../zlib/trees.o \
        ../../zlib/deflate.o ../../zlib/crc32.o ../../zlib/adler32.o ../../zlib/zutil.o ../../zlib/compress.o
# unzip
OBJS += ../../unzip/unzip.o ../../unzip/unzip_stream.o
# mp3
OBJS += ../gp2x/mp3.o
# CPU cores
ifeq "$(use_musashi)" "1"
DEFINC += -DEMU_M68K
OBJS += ../../cpu/musashi/m68kcpu.o ../../cpu/musashi/m68kopac.o ../../cpu/musashi/m68kopdm.o
OBJS += ../../cpu/musashi/m68kopnz.o ../../cpu/musashi/m68kops.o
else
DEFINC += -DEMU_C68K
OBJS += ../../cpu/Cyclone/proj/Cyclone.o
endif
# z80 sound core
DEFINC += -D_USE_DRZ80
OBJS += ../../cpu/DrZ80/drz80.o
# faked asm
DEFINC += -D_ASM_DRAW_C
OBJS += fakedasm.o

all: PicoDrive
clean: tidy
        @$(RM) PicoDrive
tidy:
        @$(RM) $(OBJS)
        @make -C ../gp2x/helix/ ARM=1 clean
PicoDrive : $(OBJS) ../gp2x/helix/helix_mp3.a
        @echo $@
        @$(GCC) -o $@ $(COPT) $^ -lm -Wl,-Map=PicoDrive.map
        
#PicoDrive : $(OBJS) ../gp2x/helix/helix_mp3.a
#       @echo $@
#       @$(GCC) $(COPT) $^ $(LDFLAGS) -lm -Wl,-Map=PicoDrive.map -o $@

../gp2x/helix/helix_mp3.a:
        @make -C ../gp2x/helix/ ARM=1 clean all
.c.o:
        @echo $<
        @$(GCC) $(COPT) $(DEFINC) -c $< -o $@
.s.o:
        @echo $<
        @$(GCC) $(COPT) $(DEFINC) -c $< -o $@
../../Pico/sound/ym2612.o : ../../Pico/sound/ym2612.c
        @echo $@
        @$(GCC) $(COPT_COMMON) $(DEFINC) -c $< -o $@  -mtune=arm940t -DEXTERNAL_YM2612
# faked asm
../../Pico/Draw.o : ../../Pico/Draw.c
        @echo $<
        @$(GCC) $(COPT) $(DEFINC) -D_ASM_DRAW_C -c $< -o $@