# -*- makefile -*-

SHELL = /bin/sh

VPATH = $(SRCDIR)

# Binary utilities.
# If the host appears to be x86, use the normal tools.
# Otherwise assume cross-tools are installed as i386-elf-*.
X86 = i.86\|pentium.*\|[pk][56]\|nexgen\|viac3\|6x86\|athlon.*
ifneq (0, $(shell expr `uname -m` : '$(X86)'))
CC = gcc
LD = ld
OBJCOPY = objcopy
else
CC = i386-elf-gcc
LD = i386-elf-ld
OBJCOPY = i386-elf-objcopy
endif

# GCC 3.3 specifies directories for #include <> as "-I- -Idir"
# GCC 4.x specifies directories for #include <> as "-isystem dir"
# Figure out which format to use.
ifeq (0, $(shell $(CC) -v 2>&1 | grep 'gcc version 4' >/dev/null 2>&1; echo $$?))
SYSINCFLAGS = $(patsubst %,-isystem %,$(SYSINCDIRS))
else
SYSINCFLAGS = -I- $(patsubst %,-I%,$(SYSINCDIRS))
endif

# Compiler and assembler invocation.
DEFINES =
WARNINGS = -Wall -W -Wstrict-prototypes -Wmissing-prototypes -Wsystem-headers
CFLAGS = -g -MMD -msoft-float -masm=intel
SYSINCDIRS = $(SRCDIR)/lib
CPPFLAGS = -nostdinc -I$(SRCDIR) $(SYSINCFLAGS)
ASFLAGS = -Wa,--gstabs -MMD
LDFLAGS = 

%.o: %.c
	$(CC) -c $< -o $@ $(CFLAGS) $(CPPFLAGS) $(WARNINGS) $(DEFINES)

%.o: %.S
	$(CC) -c $< -o $@ $(ASFLAGS) $(CPPFLAGS) $(DEFINES)