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# -*- makefile -*-

TMPFILE = $(shell mktemp /tmp/gcc_ok.XXXXXX)
CC	= gcc

gcc_ok  = $(shell tmpf=$(TMPFILE); if $(CC) $(1) -c -x c /dev/null -o $$tmpf 2>/dev/null; \
	  then echo $(1); else echo $(2); fi; rm -f $$tmpf)

GCCOPT := $(call gcc_ok,-m32,) $(call gcc_ok,-fno-stack-protector,)

LD	= ld
INCLUDE	= -I.
AR	= ar
RANLIB	= ranlib
NM	= nm
PERL	= perl
STRIP	= strip --strip-all -R .comment -R .note
OBJCOPY	= objcopy

# zlib and libpng configuration flags
LIBFLAGS = -DDYNAMIC_CRC_TABLE -DPNG_NO_CONSOLE_IO \
	   -DPNG_NO_WRITE_SUPPORTED \
	   -DPNG_NO_MNG_FEATURES \
	   -DPNG_NO_READ_tIME -DPNG_NO_WRITE_tIME

# We need some features in libpng which apparently aren't available in the
# fixed-point versions.  It's OK, because we have to have a non-graphical
# fallback anyway, just use that on old machines...
# LIBFLAGS += -DPNG_NO_FLOATING_POINT_SUPPORTED

REQFLAGS  = $(GCCOPT) -g -mregparm=3 -DREGPARM=3 -D__COM32__ \
	    -nostdinc -iwithprefix include -I. -I./sys -I../include
OPTFLAGS  = -Os -march=i386 -falign-functions=0 -falign-jumps=0 \
	    -falign-labels=0 -ffast-math -fomit-frame-pointer
WARNFLAGS = -W -Wall -Wpointer-arith -Wwrite-strings -Wstrict-prototypes -Winline

CFLAGS  = -Wp,-MT,$@,-MD,$(dir $@).$(notdir $@).d $(OPTFLAGS) \
	  $(REQFLAGS) $(WARNFLAGS) $(LIBFLAGS)
LDFLAGS	= -m elf32_i386

.SUFFIXES: .c .o .a .so .lo .i .S .s .ls .ss .lss

% : %.c # Cancel default rule

% : %.S

.c.o:
	$(CC) $(CFLAGS) -c -o $@ $<

.c.i:
	$(CC) $(CFLAGS) -E -o $@ $<

.c.s:
	$(CC) $(CFLAGS) -S -o $@ $<

.S.o:
	$(CC) $(CFLAGS) -D__ASSEMBLY__ -c -o $@ $<

.S.s:
	$(CC) $(CFLAGS) -D__ASSEMBLY__ -E -o $@ $<

.S.lo:
	$(CC) $(CFLAGS) $(SOFLAGS) -D__ASSEMBLY__ -c -o $@ $<

.S.ls:
	$(CC) $(CFLAGS) $(SOFLAGS) -D__ASSEMBLY__ -E -o $@ $<

.s.o:
	$(CC) $(CFLAGS) -x assembler -c -o $@ $<

.ls.lo:
	$(CC) $(CFLAGS) $(SOFLAGS) -x assembler -c -o $@ $<

.c.lo:
	$(CC) $(CFLAGS) $(SOFLAGS) -c -o $@ $<

.c.ls:
	$(CC) $(CFLAGS) $(SOFLAGS) -S -o $@ $<