# Linux 2.6 defines some macros on command line
KBUILD_DEFINES = -D"KBUILD_STR(s)=\#s" \
                 -D"KBUILD_BASENAME=KBUILD_STR($(patsubst %.o, %, $(notdir $@)))" \
                 -D"KBUILD_MODNAME=KBUILD_STR($(patsubst %.o, %, $@))"

# for some reasons, Linux 2.6 does not include autoconf.h in the implementation
# files but does so on the command line
ifeq ($(ARCH), x86)
KBUILD_CPPFLAGS = -include linux/autoconf.h
endif

ifeq ($(ARCH), arm)
KBUILD_CPPFLAGS = -include linux/autoconf-arm.h
endif

# includes
MY_DDE_INCDIR = $(OBJ_BASE)/include/$(ARCH) \
                $(OBJ_BASE)/include/

SUFFIX_amd64 = x86_64
SUFFIX_x86   = x86
SUFFIX_arm   = arm

MY_LINUX26_INCDIR = $(OBJ_BASE)/include/$(ARCH)/linux-headers \
		    $(OBJ_BASE)/include/$(ARCH)/asm \
                    $(OBJ_BASE)/include/linux-headers

# stolen from fiasco/src/Makeconf, checks whether a compiler supports a certain
# parameter
CHECKCC     = $(shell if $(CC)  $(1) -S -o /dev/null -xc   /dev/null \
              > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)

# Linux always uses C...
MODE_USE_C = y
L4_MULTITHREADED = y

# arch-specific stuff
ifeq ($(ARCH), x86)
MY_DDE_INCDIR += $(OBJ_BASE)/include/linux-headers/asm/mach-default
endif

PRIVATE_INCDIR += $(MY_DDE_INCDIR) $(MY_LINUX26_INCDIR) $(PKGDIR)/../libddekit

DEFINES += -D__KERNEL__ -DDDE_LINUX $(KBUILD_DEFINES)
CPPFLAGS += $(KBUILD_CPPFLAGS)
CFLAGS += -ffunction-sections
ASFLAGS += -D__ASSEMBLY__

WARNINGS  += -Wall -Wstrict-prototypes -fno-strict-aliasing
WARNINGS  += $(call CHECKCC, -Wno-unused,)
WARNINGS  += $(call CHECKCC, -Wno-pointer-sign,)