export SOURCE=$(shell /bin/pwd)

#
# gnumake 3.77 support
#
export USE_APPLE_PB_SUPPORT = all

#
# Incremental Build option
#
ifndef INCR_EXPORTHDRS
ifeq ($(shell test -d $$OBJROOT/EXPORT_HDRS;echo $$?),0)
export INCR_EXPORTHDRS	= TRUE
else
export INCR_EXPORTHDRS	= FALSE
endif
endif

#
# Component List
#
ifndef COMPONENT_LIST 
export COMPONENT_LIST 	= osfmk bsd libkern iokit pexpert libsa security
export COMPONENT_LIST_UC := $(shell printf "%s" "$(COMPONENT_LIST)" | $(TR) a-z A-Z)
endif
ifndef	COMPONENT
export COMPONENT 	:= $(firstword $(subst /, ,$(shell $(RELPATH) $(SRCROOT) $(SOURCE))))
export COMPONENT_IMPORT_LIST := $(filter-out $(COMPONENT),$(COMPONENT_LIST)) 
else
ifeq	($(COMPONENT), .)
export COMPONENT        := $(firstword $(subst /, ,$(shell $(RELPATH) $(SRCROOT) $(SOURCE))))
export COMPONENT_IMPORT_LIST := $(filter-out $(COMPONENT),$(COMPONENT_LIST)) 
endif
endif

# Architecture options
#
ifndef SUPPORTED_ARCH_CONFIGS
export SUPPORTED_ARCH_CONFIGS = PPC I386 ARM
endif

ifndef ARCH_CONFIGS
ifdef RC_ARCHS
export ARCH_CONFIGS 	:= $(shell printf "%s" "$(RC_ARCHS)" | $(TR) a-z A-Z)
else
export ARCH_CONFIGS 	:= $(shell arch | $(TR) a-z A-Z)
endif
endif
ifdef	ARCH_CONFIG
ifndef ARCH_CONFIG_LC
export ARCH_CONFIG_LC 	:= $(shell printf "%s" "$(ARCH_CONFIG)" | $(TR) A-Z a-z)
endif
endif

#
# Kernel Configuration options  
#
ifndef SUPPORTED_KERNEL_CONFIGS
export SUPPORTED_KERNEL_CONFIGS = RELEASE DEVELOPMENT DEBUG PROFILE
endif

ifndef DEFAULT_KERNEL_CONFIG
export DEFAULT_KERNEL_CONFIG = RELEASE
endif

# If KERNEL_CONFIGS is specified it should override KERNEL_CONFIG.
# If KERNEL_CONFIG is specified it will override the default. Will quit with
# error if more than one config is specified.
# If DEFAULT_KERNEL_CONFIG is not specified then it will be built RELEASE.
ifndef KERNEL_CONFIGS
	ifndef KERNEL_CONFIG
	export KERNEL_CONFIGS 	= $(DEFAULT_KERNEL_CONFIG)
	else
	export KERNEL_CONFIGS	= $(KERNEL_CONFIG)
	endif
endif

ifndef KERNEL_CONFIG
export KERNEL_CONFIG 	= $(firstword $(KERNEL_CONFIGS))
endif

ifneq ($(words $(KERNEL_CONFIG)), 1)
$(error There were $(words $(KERNEL_CONFIG)) parameters passed to KERNEL_CONFIG = $(KERNEL_CONFG). \
		Are you sure? To specify multiple configurations please use KERNEL_CONFIGS)
endif

ifndef MACHINE_CONFIG
export MACHINE_CONFIG 	= DEFAULT
endif


#
# Target configuration options.  NOTE - target configurations will 
# override ARCH_CONFIGS and KERNEL_CONFIGS.
#
# Target configs come in groups of three parameters.  The first is the 
# kernel configuration, the second is the architecture configuration,
# and the third is the machine configuration.  You may pass in as
# many groups of configurations as you wish.  Each item passed in is
# seperated by whitespace.
#
# Example:
#	TARGET_CONFIGS="release ppc default debug i386 default release arm MX31ADS"
# Parameters may be in upper or lower case (they are converted to upper).
#
# "default" parameter is a special case.  It means use the default value for 
# that parameter.  Here are the default values for each configuration:
#
# default kernel configuration = DEFAULT_KERNEL_CONFIG
# default architecture configuration = system architecture where you are running make.
# default machine configuration for ppc = none at this time.
# default machine configuration for i386 = none at this time.
# default machine configuration for arm = "S5L8900X".
#
ifndef TARGET_CONFIGS_UC
ifdef TARGET_CONFIGS
	export TARGET_CONFIGS_UC = $(strip $(shell printf "%s" "$(TARGET_CONFIGS)" | $(TR) a-z A-Z))
	export MACHINE_CONFIG	= $(word 3, $(TARGET_CONFIGS_UC))
	export DEFAULT_KERNEL_CONFIG = $(word 1, $(TARGET_CONFIGS_UC))
else
	# generate TARGET_CONFIGS using KERNEL_CONFIGS and ARCH_CONFIGS and MACHINE_CONFIG (which defaults to "DEFAULT")
	temp_list = $(foreach my_kern_config, $(KERNEL_CONFIGS), $(my_kern_config) arch_slot $(MACHINE_CONFIG))
	export TARGET_CONFIGS = $(strip $(foreach my_arch_config, $(ARCH_CONFIGS), $(subst arch_slot,$(my_arch_config),$(temp_list))))
	export TARGET_CONFIGS_UC := $(shell printf "%s" "$(TARGET_CONFIGS)" | $(TR) a-z A-Z)
	export MACHINE_CONFIG	= $(word 3, $(TARGET_CONFIGS_UC))
	export DEFAULT_KERNEL_CONFIG = $(word 1, $(TARGET_CONFIGS_UC))
endif
endif

export MACHINE_CONFIG_LC := $(shell printf "%s" "$(MACHINE_CONFIG)" | $(TR) A-Z a-z)
export KERNEL_CONFIG_LC := $(shell printf "%s" "$(KERNEL_CONFIG)" | $(TR) A-Z a-z)

#
# Kernel Configuration to install
#
#  supported install architecture : PPC I386 ARM
#
export INSTALL_TYPE 	= $(DEFAULT_KERNEL_CONFIG)

ifndef INSTALL_ARCHS
export INSTALL_ARCHS 	= $(strip $(foreach my_config, $(SUPPORTED_ARCH_CONFIGS), $(findstring $(my_config), $(TARGET_CONFIGS_UC))))
export INSTALL_ARCHS_LC := $(shell printf "%s" "$(INSTALL_ARCHS)" | $(TR) A-Z a-z)
endif

export INSTALL_ARCH_DEFAULT	= PPC

#
# Standard defines list
#
export DEFINES = -DAPPLE -DKERNEL -DKERNEL_PRIVATE -DXNU_KERNEL_PRIVATE -DPRIVATE -D__MACHO__=1 -Dvolatile=__volatile $(IDENT)

#
# Compiler command
#
KCC  := $(CC)
KC++ := $(CXX)

#
# Compiler warning flags
#

CWARNFLAGS_STD = \
	-Wall -Wno-format-y2k -W -Wstrict-prototypes -Wmissing-prototypes \
	-Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch \
	-Wshadow -Wcast-align -Wbad-function-cast -Wchar-subscripts -Winline \
	-Wnested-externs -Wredundant-decls

export CWARNFLAGS ?= $(CWARNFLAGS_STD)

MWARNFLAGS_STD = \
	-Wall -Wno-format-y2k -W -Wstrict-prototypes -Wmissing-prototypes \
	-Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch \
	-Wshadow -Wcast-align -Wbad-function-cast -Wchar-subscripts -Winline \
	-Wnested-externs -Wredundant-decls

export MWARNFLAGS ?= $(MWARNFLAGS_STD)

CXXWARNFLAGS_STD = \
	-Wall -Wno-format-y2k -W \
	-Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch \
	-Wshadow -Wcast-align -Wchar-subscripts -Winline -Wredundant-decls

export CXXWARNFLAGS ?= $(CXXWARNFLAGS_STD)


#
# Setup for parallel sub-makes based on 2 times number of logical CPUs
#
ifndef MAKEJOBS
export MAKEJOBS = --jobs=$(shell expr `/usr/sbin//sysctl -n hw.logicalcpu` \* 2)
endif

#
# Default ARCH_FLAGS, for use with compiler/linker/assembler/mig drivers

ARCH_FLAGS_PPC		  = -arch ppc
ARCH_FLAGS_I386		  = -arch i386
ARCH_FLAGS_ARM		  = $($(addsuffix $(MACHINE_CONFIG),ARCH_FLAGS_ARM_))


#
# Default CFLAGS
#
ifdef RC_CFLAGS
export OTHER_CFLAGS	= $(subst $(addprefix -arch ,$(RC_ARCHS)),,$(RC_CFLAGS))
endif

export DSYMBUILDDIR = ./Contents/Resources/DWARF/

#
# We must not use -fno-keep-inline-functions, or it will remove the dtrace
# probes from the kernel.
#
export CFLAGS_GEN = -static $(DEBUG_CFLAGS) -nostdinc -nostdlib \
	-fno-builtin -finline -msoft-float \
	-fsigned-bitfields $(OTHER_CFLAGS)

export CFLAGS_RELEASE 	= 
export CFLAGS_DEVELOPMENT 	=
export CFLAGS_DEBUG 	= 
export CFLAGS_PROFILE 	=  -pg

ifeq ($(BUILD_STABS),1)
export CFLAGS_PPC 	= -Dppc -DPPC -D__PPC__ -DPAGE_SIZE_FIXED \
				-mno-altivec -gstabs+ -force_cpusubtype_ALL
export CFLAGS_I386 	= -Di386 -DI386 -D__I386__ \
				-DPAGE_SIZE_FIXED -gstabs+ -force_cpusubtype_ALL
export CFLAGS_ARM 	= -Darm -DARM -D__ARM__ -DPAGE_SIZE_FIXED \
	-fno-strict-aliasing -gstabs+ -fno-keep-inline-functions
export BUILD_DWARF = 0
export BUILD_STABS = 1
else
export CFLAGS_PPC 	= -Dppc -DPPC -D__PPC__ -DPAGE_SIZE_FIXED \
				-mno-altivec -gdwarf-2 -force_cpusubtype_ALL
export CFLAGS_I386 	= -Di386 -DI386 -D__I386__ \
				-DPAGE_SIZE_FIXED -gdwarf-2 -force_cpusubtype_ALL
export CFLAGS_ARM 	= -Darm -DARM -D__ARM__ -DPAGE_SIZE_FIXED \
	-fno-strict-aliasing -gdwarf-2 -fno-keep-inline-functions
export BUILD_DWARF = 1
export BUILD_STABS = 0
endif
ifeq (-arch armv6,$(ARCH_FLAGS_ARM))
CFLAGS_ARM		+= -mthumb
endif
ifeq (-arch armv5,$(ARCH_FLAGS_ARM))
CFLAGS_ARM		+= -mthumb
endif
ifeq (-arch xscale,$(ARCH_FLAGS_ARM))
CFLAGS_ARM		+= -mthumb
endif

export CFLAGS_RELEASEPPC = -O2 -mcpu=750 -mmultiple
export CFLAGS_RELEASE_TRACEPPC = -O2 -mcpu=750 -mmultiple
export CFLAGS_DEVELOPMENTPPC = -O2 -mcpu=750 -mmultiple
export CFLAGS_DEBUGPPC = -O2 -mcpu=750 -mmultiple
export CFLAGS_PROFILEPPC = -O2 -mcpu=750 -mmultiple

export CFLAGS_RELEASEI386 = -Os
export CFLAGS_DEVELOPMENTI386 = -Os
export CFLAGS_DEBUGI386 = -Os
export CFLAGS_PROFILEI386 = -Os

export CFLAGS_RELEASEARM = -O2
export CFLAGS_DEVELOPMENTARM = -O2
export CFLAGS_DEBUGARM = -O2
export CFLAGS_PROFILEARM = -O2

export CFLAGS 	= $(CFLAGS_GEN) \
		  $($(addsuffix $(MACHINE_CONFIG),MACHINE_FLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG),ARCH_FLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG),CFLAGS_)) \
		  $($(addsuffix $(KERNEL_CONFIG),CFLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG), $(addsuffix $(KERNEL_CONFIG),CFLAGS_))) \
		  $(DEFINES)

export MIGCC = $(CC)

# Default C++ flags
#
CXXFLAGS_GEN  = -fno-rtti -fno-exceptions -fcheck-new -fapple-kext

CXXFLAGS      = $(CXXFLAGS_GEN) \
		  $($(addsuffix $(ARCH_CONFIG),CXXFLAGS_)) \
		  $($(addsuffix $(KERNEL_CONFIG),CXXFLAGS_))

#
# Assembler command
#
AS	= $(CC)
S_KCC	= $(CC)

#
# Default SFLAGS
#
export SFLAGS_GEN = -static -D__ASSEMBLER__ $(OTHER_CFLAGS)

export SFLAGS_RELEASE 	= 
export SFLAGS_DEVELOPMENT 	= 
export SFLAGS_DEBUG 	= 
export SFLAGS_PROFILE 	= 

export SFLAGS_PPC 	= $(CFLAGS_PPC) -force_cpusubtype_ALL
export SFLAGS_I386	= $(CFLAGS_I386)
export SFLAGS_ARM	= $(CFLAGS_ARM)

export SFLAGS 	= $(SFLAGS_GEN) \
		  $($(addsuffix $(MACHINE_CONFIG),MACHINE_FLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG),ARCH_FLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG),SFLAGS_)) \
		  $($(addsuffix $(KERNEL_CONFIG),SFLAGS_)) \
		  $(DEFINES)

#
# Linker command
#
LD	= $(KC++) -nostdlib

#
# Default LDFLAGS
#
export LDFLAGS_COMPONENT_GEN = -static -r $(COMP_LDFLAGS_COMPONENT_GEN)

export LDFLAGS_COMPONENT_RELEASE =  $(COMP_LDFLAGS_COMPONENT_RELEASE)
export LDFLAGS_COMPONENT_DEVELOPMENT =  $(COMP_LDFLAGS_COMPONENT_DEVELOPMENT)
export LDFLAGS_COMPONENT_DEBUG   =  $(COMP_LDFLAGS_COMPONENT_DEBUG)
export LDFLAGS_COMPONENT_PROFILE =  $(COMP_LDFLAGS_COMPONENT_PROFILE)

export LDFLAGS_COMPONENT_PPC 	= $(COMP_LDFLAGS_COMPONENT_PPC) -force_cpusubtype_ALL
export LDFLAGS_COMPONENT_I386 	= $(COMP_LDFLAGS_COMPONENT_i386)
export LDFLAGS_COMPONENT_ARM 	= $(COMP_LDFLAGS_COMPONENT_ARM)

export LDFLAGS_COMPONENT	= $(LDFLAGS_COMPONENT_GEN) \
		  $($(addsuffix $(ARCH_CONFIG),ARCH_FLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG),LDFLAGS_COMPONENT_)) \
		  $($(addsuffix $(KERNEL_CONFIG),LDFLAGS_COMPONENT_))

export LDFLAGS_KERNEL_GEN = \
	-static \
	-fapple-kext \
	-Wl,-e,__start \
	-Wl,-sectalign,__TEXT,__text,0x1000 \
	-Wl,-sectalign,__DATA,__common,0x1000 \
	-Wl,-sectalign,__DATA,__bss,0x1000 \
	-Wl,-sectcreate,__PRELINK,__text,/dev/null \
	-Wl,-sectcreate,__PRELINK,__symtab,/dev/null \
	-Wl,-sectcreate,__PRELINK,__info,/dev/null

export LDFLAGS_KERNEL_RELEASE 	=
export LDFLAGS_KERNEL_DEVELOPMENT 	=
#  -noseglinkedit
export LDFLAGS_KERNEL_DEBUG 	= 
export LDFLAGS_KERNEL_PROFILE 	= 

export LDFLAGS_KERNEL_PPC      = \
	-force_cpusubtype_ALL \
	-Wl,-new_linker \
	-Wl,-segaddr,__VECTORS,0x0 \
	-Wl,-segaddr,__HIB,0x7000  \
	-Wl,-segaddr,__TEXT,0xe000
 
export LDFLAGS_KERNEL_I386     = \
	-Wl,-new_linker \
	-Wl,-segaddr,__HIB,0x100000 \
	-Wl,-segaddr,__TEXT,0x111000 

export LDFLAGS_KERNEL_ARM     = \
	-Wl,-segaddr,__HIB,0xC0000000 \
	-Wl,-segaddr,__TEXT,0xC0008000

export LDFLAGS_KERNEL	= $(LDFLAGS_KERNEL_GEN) \
		  $($(addsuffix $(MACHINE_CONFIG),MACHINE_FLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG),ARCH_FLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG),LDFLAGS_KERNEL_)) \
		  $($(addsuffix $(KERNEL_CONFIG),LDFLAGS_KERNEL_))


#
# Default runtime libraries to be linked with the kernel
#
export LD_KERNEL_LIBS	= -lcc_kext

#
# Default INCFLAGS
#
export INCFLAGS_IMPORT 	= $(patsubst %, -I$(OBJROOT)/EXPORT_HDRS/%, $(COMPONENT_IMPORT_LIST))
export INCFLAGS_EXTERN 	= -I$(OBJROOT)/EXTERN_HDRS -I$(SRCROOT)/EXTERNAL_HEADERS -I$(SRCROOT)/EXTERNAL_HEADERS/bsd
export INCFLAGS_GEN	= -I$(SRCROOT)/$(COMPONENT) -I$(OBJROOT)/EXPORT_HDRS/$(COMPONENT)
export INCFLAGS_POSIX	= -I$(OBJROOT)/EXPORT_HDRS/bsd
export INCFLAGS_LOCAL	= -I.

export INCFLAGS 	= $(INCFLAGS_LOCAL) $(INCFLAGS_GEN) $(INCFLAGS_IMPORT) $(INCFLAGS_EXTERN) $(INCFLAGS_MAKEFILE)

#
# Default MIGFLAGS
#
export MIGFLAGS	= $(DEFINES) $(INCFLAGS) $($(addsuffix $(ARCH_CONFIG),CFLAGS_)) $($(addsuffix $(ARCH_CONFIG),ARCH_FLAGS_))

#
# Default VPATH
#
empty:=
space:= $(empty) $(empty)
export VPATH_IMPORT 	= $(subst $(space),:,$(patsubst %,$(OBJROOT)/EXPORT_HDRS/%,$(strip $(COMPONENT_IMPORT_LIST)))):
export VPATH_EXTERN 	= $(OBJROOT)/EXTERN_HDRS:
export VPATH_GEN	= .:$(SOURCE):

export VPATH	 	= $(VPATH_GEN)$(VPATH_IMPORT)$(VPATH_EXTERN)$(VPATH_MAKEFILE)

#
# Macros that control installation of kernel and its header files
#
# install flags for header files
# 
INSTALL_FLAGS = -c -m 0444
FILE_INSTALL_FLAGS = -c -m 0644
DATA_INSTALL_FLAGS = -c -m 0644

#
# Header file destinations
#
FRAMEDIR = System/Library/Frameworks
ifndef INCDIR
    INCDIR = /usr/include
endif
ifndef LCLDIR
    LCLDIR = $(FRAMEDIR)/System.framework/Versions/B/PrivateHeaders
endif

KINCVERS = A
KINCFRAME = $(FRAMEDIR)/Kernel.framework
KINCDIR = $(KINCFRAME)/Versions/$(KINCVERS)/Headers
KPINCDIR = $(KINCFRAME)/Versions/$(KINCVERS)/PrivateHeaders
KRESDIR = $(KINCFRAME)/Versions/$(KINCVERS)/Resources

XNU_PRIVATE_UNIFDEF = -UMACH_KERNEL_PRIVATE -UBSD_KERNEL_PRIVATE -UIOKIT_KERNEL_PRIVATE -ULIBKERN_KERNEL_PRIVATE -ULIBSA_KERNEL_PRIVATE -UPEXPERT_KERNEL_PRIVATE -UXNU_KERNEL_PRIVATE

SPINCFRAME_UNIFDEF = $(XNU_PRIVATE_UNIFDEF) -UKERNEL_PRIVATE -UKERNEL -DPRIVATE -U_OPEN_SOURCE_
SINCFRAME_UNIFDEF  = $(XNU_PRIVATE_UNIFDEF) -UKERNEL_PRIVATE -UKERNEL -UPRIVATE -D_OPEN_SOURCE_
KPINCFRAME_UNIFDEF = $(XNU_PRIVATE_UNIFDEF) -DKERNEL_PRIVATE -DPRIVATE -DKERNEL -U_OPEN_SOURCE_
KINCFRAME_UNIFDEF  = $(XNU_PRIVATE_UNIFDEF) -UKERNEL_PRIVATE -UPRIVATE -DKERNEL -D_OPEN_SOURCE_

#
# Compononent Header file destinations
#
EXPDIR = EXPORT_HDRS/$(COMPONENT)

#
# Strip Flags
#
export STRIP_FLAGS_RELEASE	= -S -x 
export STRIP_FLAGS_DEVELOPMENT	= -S -x 
export STRIP_FLAGS_RELEASE_TRACE	= -S -x 
export STRIP_FLAGS_DEBUG	= -S 
export STRIP_FLAGS_DEBUG_TRACE	= -S 
export STRIP_FLAGS_PROFILE	= -S -x

export STRIP_FLAGS 	= $($(addsuffix $(KERNEL_CONFIG),STRIP_FLAGS_)) 

#
# dsymutil flags
#
export DSYMUTIL_FLAGS_I386 = --arch=i386
export DSYMUTIL_FLAGS_PPC = --arch=ppc
export DSYMUTIL_FLAGS_ARM = --arch=arm

export DSYMUTIL_FLAGS = $($(addsuffix $(ARCH_CONFIG),DSYMUTIL_FLAGS_))

#
# Man Page destination
#
MANDIR = usr/share/man

##
# Verbosity
##
ifeq ($(RC_XBS),YES)
VERBOSE = YES
else
VERBOSE = NO
endif

ifeq ($(VERBOSE),YES)
_v = 
else
_v = @
endif

#
#  This must be here before any rules are possibly defined by the
#  machine dependent makefile fragment so that a plain "make" command
#  always works.  The config program will emit an appropriate rule to
#  cause "all" to depend on every kernel configuration it generates.
#

default: all

# vim: set ft=make:
