haiku/build/jam/BuildSetup

# Variable naming conventions:
# TARGET_*:	A build system variable specifying a property for building for
#			the target platform (usually Haiku). E.g. TARGET_CC specifies the
#			compiler when building a target for the target platform.
# HOST_*:	A build system variable specifying a property of the platform
#			hosting the build. E.g. HOST_CC specifies the compiler when
#			building a target for the host platform (a build tool for
#			instance).
# HAIKU_*:	A build system variable specifying a build system property. Usually
#			directory paths and the like.


# The Haiku (base) version. For development builds the revision will be
# attached.
HAIKU_VERSION = r1~alpha4_pm ;


#pragma mark - container settings

# Haiku image
HAIKU_IMAGE_CONTAINER_NAME = haiku-image-container ;
HAIKU_CONTAINER_GRIST on $(HAIKU_IMAGE_CONTAINER_NAME) = HaikuImage ;
HAIKU_INCLUDE_IN_CONTAINER_VAR on $(HAIKU_IMAGE_CONTAINER_NAME)
	= HAIKU_INCLUDE_IN_IMAGE ;
HAIKU_INSTALL_TARGETS_VAR on $(HAIKU_IMAGE_CONTAINER_NAME)
	= HAIKU_IMAGE_INSTALL_TARGETS ;
HAIKU_CONTAINER_SYSTEM_DIR_TOKENS on $(HAIKU_IMAGE_CONTAINER_NAME)
	= system non-packaged ;

# network boot archive
HAIKU_NET_BOOT_ARCHIVE_CONTAINER_NAME = haiku-netboot-archive-container ;
HAIKU_CONTAINER_GRIST on $(HAIKU_NET_BOOT_ARCHIVE_CONTAINER_NAME)
	= NetBootArchive ;
# HAIKU_INCLUDE_IN_CONTAINER_VAR -- update only mode not supported
HAIKU_INSTALL_TARGETS_VAR on $(HAIKU_NET_BOOT_ARCHIVE_CONTAINER_NAME)
	= HAIKU_NET_BOOT_ARCHIVE_INSTALL_TARGETS ;
HAIKU_CONTAINER_SYSTEM_DIR_TOKENS on $(HAIKU_NET_BOOT_ARCHIVE_CONTAINER_NAME)
	= system ;

# boot floppy
HAIKU_FLOPPY_BOOT_IMAGE_CONTAINER_NAME = haiku-boot-floppy-container ;
HAIKU_CONTAINER_GRIST on $(HAIKU_FLOPPY_BOOT_IMAGE_CONTAINER_NAME)
	= FloppyBootImage ;
# HAIKU_INCLUDE_IN_CONTAINER_VAR -- update only mode not supported
HAIKU_INSTALL_TARGETS_VAR on $(HAIKU_FLOPPY_BOOT_IMAGE_CONTAINER_NAME)
	= HAIKU_FLOPPY_BOOT_IMAGE_INSTALL_TARGETS ;
HAIKU_CONTAINER_SYSTEM_DIR_TOKENS on $(HAIKU_FLOPPY_BOOT_IMAGE_CONTAINER_NAME)
	= system ;

# boot CD image
HAIKU_CD_BOOT_IMAGE_CONTAINER_NAME = haiku-boot-cd-container ;
HAIKU_CONTAINER_GRIST on $(HAIKU_CD_BOOT_IMAGE_CONTAINER_NAME) = CDBootImage ;
# HAIKU_INCLUDE_IN_CONTAINER_VAR -- update only mode not supported
HAIKU_INSTALL_TARGETS_VAR on $(HAIKU_CD_BOOT_IMAGE_CONTAINER_NAME)
	= HAIKU_CD_BOOT_IMAGE_INSTALL_TARGETS ;
HAIKU_CONTAINER_SYSTEM_DIR_TOKENS on $(HAIKU_CD_BOOT_IMAGE_CONTAINER_NAME)
	= system ;

# boot CD for PPC image
HAIKU_CD_BOOT_PPC_IMAGE_CONTAINER_NAME = haiku-boot-cd-ppc-container ;
HAIKU_CONTAINER_GRIST on $(HAIKU_CD_BOOT_PPC_IMAGE_CONTAINER_NAME)
	= CDBootPPCImage ;
# HAIKU_INCLUDE_IN_CONTAINER_VAR -- update only mode not supported
HAIKU_INSTALL_TARGETS_VAR on $(HAIKU_CD_BOOT_PPC_IMAGE_CONTAINER_NAME)
	= HAIKU_CD_BOOT_PPC_IMAGE_INSTALL_TARGETS ;
HAIKU_CONTAINER_SYSTEM_DIR_TOKENS on $(HAIKU_CD_BOOT_PPC_IMAGE_CONTAINER_NAME)
	= system ;

# Haiku image/install defaults
HAIKU_DEFAULT_IMAGE_NAME = haiku.image ;
HAIKU_DEFAULT_IMAGE_DIR = $(HAIKU_OUTPUT_DIR) ;
HAIKU_DEFAULT_VMWARE_IMAGE_NAME = haiku.vmdk ;
HAIKU_DEFAULT_INSTALL_DIR = /Haiku ;
HAIKU_DEFAULT_IMAGE_SIZE ?= 300 ; # 300 MB
HAIKU_DEFAULT_IMAGE_LABEL ?= Haiku ;

# Haiku CD defaults
HAIKU_DEFAULT_CD_NAME = haiku-cd.iso ;
HAIKU_DEFAULT_CD_DIR = $(HAIKU_OUTPUT_DIR) ;
HAIKU_DEFAULT_CD_LABEL = Haiku ;

# Haiku Anyboot defaults
HAIKU_DEFAULT_ANYBOOT_NAME = haiku-anyboot.iso ;
HAIKU_DEFAULT_ANYBOOT_DIR = $(HAIKU_OUTPUT_DIR) ;
HAIKU_DEFAULT_ANYBOOT_LABEL ?= Haiku ;

# Haiku MMC defaults
HAIKU_DEFAULT_MMC_IMAGE_NAME = haiku-mmc.image ;
HAIKU_DEFAULT_MMC_DIR = $(HAIKU_OUTPUT_DIR) ;
HAIKU_DEFAULT_MMC_LABEL ?= Haiku ;

# analyze and optionally replace jam's target parameters
ProcessCommandLineArguments ;


# supported debug levels
HAIKU_DEBUG_LEVELS = 0 1 2 3 4 5 ;

# BeOS, BONE, Dan0 compatible platforms
HAIKU_BEOS_COMPATIBLE_PLATFORMS = haiku r5 bone dano haiku_host ;
HAIKU_BONE_COMPATIBLE_PLATFORMS = haiku bone dano haiku_host ;
HAIKU_DANO_COMPATIBLE_PLATFORMS = haiku dano haiku_host ;
HAIKU_HAIKU_COMPATIBLE_PLATFORMS = haiku haiku_host ;

# configuration header directories
HAIKU_CONFIG_HEADERS = [ FDirName $(HAIKU_TOP) build user_config_headers ]
	[ FDirName $(HAIKU_TOP) build config_headers ] ;


# object directories common to all architectures
HAIKU_OBJECT_BASE_DIR = [ FDirName $(HAIKU_OBJECT_DIR) haiku ] ;
HAIKU_COMMON_ARCH_OBJECT_DIR = [ FDirName $(HAIKU_OBJECT_BASE_DIR) common ] ;


#pragma mark - haiku target platform settings


local architecture ;
for architecture in $(HAIKU_PACKAGING_ARCHS) {
	ArchitectureSetup $(architecture) ;
}

# TODO: Might not be needed anymore.
if $(HAIKU_HOST_BUILD_ONLY) = 1 {
	HAIKU_GCC_VERSION = 0 0 0 ;
}

if $(HAIKU_PACKAGING_ARCH) {
	KernelArchitectureSetup $(HAIKU_PACKAGING_ARCH) ;
}

# define primary packaging architecture macro
HAIKU_DEFINES = __HAIKU_PRIMARY_PACKAGING_ARCH=\\\"$(HAIKU_PACKAGING_ARCH)\\\" ;


# distro compatibility level defines
HAIKU_DISTRO_COMPATIBILITY ?= "default" ;
switch $(HAIKU_DISTRO_COMPATIBILITY) {
	case official :
		HAIKU_DEFINES += HAIKU_DISTRO_COMPATIBILITY_OFFICIAL ;
		HAIKU_INCLUDE_TRADEMARKS = "" ;
	case compatible :
		HAIKU_DEFINES += HAIKU_DISTRO_COMPATIBILITY_COMPATIBLE ;
		HAIKU_INCLUDE_TRADEMARKS = "" ;
	case "default" :
		HAIKU_DEFINES += HAIKU_DISTRO_COMPATIBILITY_DEFAULT ;
		HAIKU_INCLUDE_TRADEMARKS = ;
	case * :
		Exit "Invalid value for HAIKU_DISTRO_COMPATIBILITY:"
			$(HAIKU_DISTRO_COMPATIBILITY) ;
}

# If the environment variable HAIKU_INCLUDE_PATENTED_CODE is defined, we define
# an equally named macro to the variable value. Some components use the macro
# to allow compilation of code known to implemented patented ideas and/or
# techniques, for example the Freetype bytecode hinter or sub-pixel rendering as
# well as some problematic media codecs.
if $(HAIKU_INCLUDE_PATENTED_CODE) {
	HAIKU_DEFINES
		+= HAIKU_INCLUDE_PATENTED_CODE=$(HAIKU_INCLUDE_PATENTED_CODE) ;
}

# network libraries
HAIKU_NETWORK_LIBS = network ;
HAIKU_NETAPI_LIB = bnetapi ;
HAIKU_SELECT_UNAME_ETC_LIB = ;	# libroot, against which we link anyway

HAIKU_EXECUTABLE_MIME_TYPE = "application/x-vnd.Be-elfexecutable" ;

# TODO: The version stuff should probably go into a separate file and be made
# available as macro, too.
# Set our version number if not already set and mark it as a developer build
if ! $(HAIKU_BUILD_VERSION) {
	HAIKU_BUILD_VERSION ?= "1 0 0 a 1" ;
	HAIKU_BUILD_DESCRIPTION ?= "Developer Build" ;
}

# If HAIKU_BUILD_VERSION is set, but HAIKU_BUILD_DESCRIPTION isn't, mark it as
# an unknown build.
HAIKU_BUILD_DESCRIPTION ?= "Unknown Build" ;


#pragma mark - host platform settings


# determine the endianness of the host
switch $(HOST_GCC_MACHINE) {
	case amd64-*	: HAIKU_HOST_IS_BIG_ENDIAN = 0 ;
	case i?86-*		: HAIKU_HOST_IS_BIG_ENDIAN = 0 ;
	case powerpc-*	: HAIKU_HOST_IS_BIG_ENDIAN = 1 ;
	case x86_64-*	: HAIKU_HOST_IS_BIG_ENDIAN = 0 ;

	# the following are rather unlikely as hosts ...
	case arm-*		: HAIKU_HOST_IS_BIG_ENDIAN = 0 ;
	case armv7l-*	: HAIKU_HOST_IS_BIG_ENDIAN = 0 ;
	case armv7hl-*	: HAIKU_HOST_IS_BIG_ENDIAN = 0 ;
	case armv7b-*	: HAIKU_HOST_IS_BIG_ENDIAN = 1 ;
	case aarch64-*	: HAIKU_HOST_IS_BIG_ENDIAN = 0 ;
	case m68k-*		: HAIKU_HOST_IS_BIG_ENDIAN = 1 ;
	case *			: Exit "Unsupported gcc host machine:" $(HOST_GCC_MACHINE) ;
}

# analyze the host gcc machine spec to find out about 64-bitness
HOST_PLATFORM_IS_64_BIT = ;
switch $(HOST_GCC_MACHINE) {
	case amd64-* :				HOST_PLATFORM_IS_64_BIT = 1 ;
	case i686-apple-darwin10 :	HOST_PLATFORM_IS_64_BIT = 1 ;
	case i686-apple-darwin11 :	HOST_PLATFORM_IS_64_BIT = 1 ;
	case x86_64-* :				HOST_PLATFORM_IS_64_BIT = 1 ;
	case aarch64-* :			HOST_PLATFORM_IS_64_BIT = 1 ;
}

# If HAIKU_HOST_USE_32BIT is set, add the required gcc base flag (the LD flag
# is set later), or, if the architecture isn't actually 64 bit, clear
# HAIKU_HOST_USE_32BIT.
# Afterwards HOST_PLATFORM_IS_64_BIT will indicate whether the architecture is
# effectively (i.e. when using the compiler/linker flags) 64 bit and
# HAIKU_HOST_USE_32BIT will be set, iff the architecture is really 64 bit and
# 32 bit mode was requested.
if $(HAIKU_HOST_USE_32BIT) = 1 {
	if $(HOST_PLATFORM_IS_64_BIT) {
		# enable GCC -m32 option
		HOST_GCC_BASE_FLAGS = -m32 ;
		HOST_PLATFORM_IS_64_BIT = ;
	} else {
		HAIKU_HOST_USE_32BIT = 0 ;
	}
}


# save jam's variables for the build platform
HOST_AR				?= $(AR) ;
HOST_CC				?= $(CC) ;
HOST_C++			?= $(C++) ;
HOST_LINK			?= $(LINK) ;
HOST_RANLIB			?= $(RANLIB) ;
HOST_CPPFLAGS		?= $(CPPFLAGS) ;
HOST_CCFLAGS		?= $(HOST_GCC_BASE_FLAGS) $(CCFLAGS) ;
HOST_C++FLAGS		?= $(HOST_GCC_BASE_FLAGS) $(C++FLAGS) ;
HOST_LDFLAGS		?= $(LDFLAGS) ;
HOST_LINKFLAGS		?= $(HOST_GCC_BASE_FLAGS) $(LINKFLAGS) ;
HOST_DEFINES		?= $(DEFINES) ;
HOST_HDRS			?= $(HDRS) ;


# split up HOST_AR into the command name and flags
HOST_AR				= [ Match "([^ ]*) *(.*)" : $(HOST_AR[1]) ]
					  $(HOST_AR[2-]) ;
HOST_ARFLAGS		= $(HOST_AR[2-]) ;
HOST_AR				= $(HOST_AR[1]) ;
HOST_UNARFLAGS		?= x ;

# check the host platform compatibility
SetPlatformCompatibilityFlagVariables HOST_PLATFORM : HOST : host
	: linux openbsd freebsd darwin sunos cygwin ;
HOST_PLATFORM_(host)_COMPATIBLE = 1 ;

if $(HOST_PLATFORM) = linux || $(HOST_PLATFORM) = freebsd
	|| $(HOST_PLATFORM) = darwin || $(HOST_PLATFORM) = cygwin
	|| $(HOST_PLATFORM) = sunos || $(HOST_PLATFORM) = openbsd {
	# don't use lex: otherwise rc will not work correctly
	if $(LEX) = lex {
		LEX = flex ;
	}
}

if $(HOST_PLATFORM) = cygwin {
	HOST_LINKFLAGS += -Xlinker --allow-multiple-definition -Xlinker
		--enable-auto-import ;
}

HOST_CPU ?= $(OSPLAT:L) ;

# Jam doesn't know x86_64, so override HOST_CPU, if 64 bit.
if $(HOST_CPU) = x86 && $(HOST_PLATFORM_IS_64_BIT) {
	HOST_CPU = x86_64 ;
}

HOST_ARCH ?= $(HOST_CPU) ;
HOST_ARCHS = $(HOST_ARCH) ;
HOST_KERNEL_ARCH = host ;

# analyze GCC version
HOST_GCC_VERSION = [ FAnalyzeGCCVersion HOST_GCC_RAW_VERSION ] ;

# set packaging architecture
HOST_PACKAGING_ARCH		?= $(HOST_CPU) ;
if $(HOST_PACKAGING_ARCH) = x86 && $(HOST_GCC_VERSION[1]) = 2 {
	HOST_PACKAGING_ARCH = x86_gcc2 ;
}
HOST_PACKAGING_ARCHS = $(HOST_PACKAGING_ARCH) ;

# directories
HOST_OBJECT_BASE_DIR = [ FDirName $(HAIKU_OBJECT_DIR) $(HOST_PLATFORM) ] ;
HOST_COMMON_ARCH_OBJECT_DIR = [ FDirName $(HOST_OBJECT_BASE_DIR) common ] ;
HOST_ARCH_OBJECT_DIR
	= [ FDirName $(HOST_OBJECT_BASE_DIR) $(HOST_PACKAGING_ARCH) ] ;
HOST_COMMON_DEBUG_OBJECT_DIR = [ FDirName $(HOST_ARCH_OBJECT_DIR) common ] ;
HOST_DEBUG_0_OBJECT_DIR = [ FDirName $(HOST_ARCH_OBJECT_DIR) release ] ;

local level ;
for level in $(HAIKU_DEBUG_LEVELS[2-]) {
	HOST_DEBUG_$(level)_OBJECT_DIR
		= [ FDirName $(HOST_ARCH_OBJECT_DIR) debug_$(level) ] ;
}

# set variables for gcc header options
SetIncludePropertiesVariables HOST ;

# assembler flags
HOST_ASFLAGS = ;

# C/C++ flags
HOST_CCFLAGS += -Wno-multichar ;
HOST_C++FLAGS += -Wno-multichar ;

if $(HOST_PLATFORM) != cygwin {
	HOST_PIC_CCFLAGS += -fPIC ;
	HOST_PIC_C++FLAGS += -fPIC ;
}

if $(HOST_GCC_VERSION[1]) >= 3 {
	HOST_GCC_BASE_FLAGS += -fno-strict-aliasing -fno-tree-vrp ;
}

HOST_KERNEL_CCFLAGS += $(HOST_GCC_BASE_FLAGS) -finline -fno-builtin
	-D_KERNEL_MODE ;
HOST_KERNEL_C++FLAGS += $(HOST_GCC_BASE_FLAGS) -finline -fno-builtin
	-fno-exceptions -D_KERNEL_MODE ;
HOST_KERNEL_DEFINES += _KERNEL_MODE ;

HOST_KERNEL_PIC_CCFLAGS = -fno-pic ;
HOST_KERNEL_PIC_LINKFLAGS = ;
if $(HOST_ARCH) = ppc {
	# Build a position independent PPC kernel. We need to be able to relocate
	# the kernel, since the virtual address space layout at boot time is not
	# fixed.
	HOST_KERNEL_PIC_CCFLAGS = -fPIE ;
	HOST_KERNEL_PIC_LINKFLAGS = -shared -fPIE ;
}
if $(HOST_ARCH) = m68k {
	# Build a position independent M68K kernel. We need to be able to relocate
	# the kernel, since the virtual address space layout at boot time is not
	# fixed.
	HOST_KERNEL_PIC_CCFLAGS = $(HAIKU_KERNEL_PIC_CCFLAGS) ;
	HOST_KERNEL_PIC_LINKFLAGS = $(HAIKU_KERNEL_PIC_LINKFLAGS) ;
}

if $(HOST_PLATFORM) != darwin {
	# fix for new changes to DSO linking policies
	HOST_LINKFLAGS += -Xlinker --no-as-needed ;
}


# warning flags
HOST_WARNING_CCFLAGS = -Wall -Wno-trigraphs -Wmissing-prototypes -Wpointer-arith
	-Wcast-align -Wsign-compare ;
HOST_WARNING_C++FLAGS = -Wall -Wno-trigraphs -Wno-ctor-dtor-privacy
	-Woverloaded-virtual -Wpointer-arith -Wcast-align -Wsign-compare ;

HOST_KERNEL_WARNING_CCFLAGS = -Wall -Wno-trigraphs -Wmissing-prototypes ;
HOST_KERNEL_WARNING_C++FLAGS = -Wall -Wno-trigraphs ;

HOST_WERROR_FLAGS = ;

# debug flags
local hostDebugFlags ;
switch $(HOST_PLATFORM) {
	case haiku		: hostDebugFlags ?= -ggdb ;
	case haiku_host	: hostDebugFlags ?= -ggdb ;
	case linux		: hostDebugFlags ?= -ggdb ;
	case freebsd	: hostDebugFlags ?= -ggdb ;
	case darwin		: hostDebugFlags ?= -ggdb ;
	case *			: hostDebugFlags ?= -g ;
}

# debug 0: suppress asserts
HOST_DEBUG_0_CCFLAGS = [ FDefines NDEBUG=$(NDEBUG) ] ;
HOST_DEBUG_0_C++FLAGS = [ FDefines NDEBUG=$(NDEBUG) ] ;

HOST_KERNEL_DEBUG_0_CCFLAGS = [ FDefines NDEBUG=$(NDEBUG) ] ;
HOST_KERNEL_DEBUG_0_C++FLAGS = [ FDefines NDEBUG=$(NDEBUG) ] ;

local level ;
for level in $(HAIKU_DEBUG_LEVELS[2-]) {
	local flags = $(hostDebugFlags) [ FDefines DEBUG=$(level) ] ;
	HOST_DEBUG_$(level)_CCFLAGS			= $(flags) ;
	HOST_DEBUG_$(level)_C++FLAGS		= $(flags) ;
	HOST_KERNEL_DEBUG_$(level)_CCFLAGS	= $(flags) ;
	HOST_KERNEL_DEBUG_$(level)_C++FLAGS	= $(flags) ;
}

# ld flags
if $(HAIKU_HOST_USE_32BIT) = 1 {
	HOST_LDFLAGS += -melf_i386 ;
}

# private kernel headers do be used when compiling kernel code
HOST_PRIVATE_KERNEL_HEADERS = ;

# private shared kernel/libroot headers
HOST_PRIVATE_SYSTEM_HEADERS = ;

# under BeOS use copyattr instead of cp
if $(HOST_PLATFORM_BEOS_COMPATIBLE)
{
	CP = copyattr --data ;
}

HOST_DEFINES += ARCH_$(HOST_CPU) ;
HOST_DEFINES += _NO_INLINE_ASM ;

# for builds of tools in the current environment
HOST_BUILD_COMPATIBILITY_LIB_DIR = [ FDirName $(HOST_OBJECT_BASE_DIR) lib ] ;

# For the generic attributes emulation: Target rm_attrs -- rm replacement that
# also removes the attributes.
HOST_RM_ATTRS_TARGET = ;

HOST_LIBROOT = libroot_build_function_remapper.a libroot_build.so ;
HOST_STATIC_LIBROOT = libroot_build_function_remapper.a libroot_build.a ;
HOST_LIBBE = libbe_build.so ;

if $(HOST_PLATFORM_BEOS_COMPATIBLE) {
	# the C++ standard and support libraries
	if $(HOST_GCC_VERSION[1]) < 3 {
		HOST_LIBSTDC++ = stdc++.r4 ;
		HOST_LIBSUPC++ = ;
	} else {
		HOST_LIBSTDC++ = stdc++ ;
		HOST_LIBSUPC++ = supc++ ;
	}

	HOST_ADD_BUILD_COMPATIBILITY_LIB_DIR
		= "export LIBRARY_PATH=$LIBRARY_PATH:$(HOST_BUILD_COMPATIBILITY_LIB_DIR)" ;
	HOST_PTHREAD_LINKFLAGS = ;
	HOST_LIBRARY_NAME_MAP_input_server = /system/servers/input_server ;
	HOST_DEFINES += __STDC_FORMAT_MACROS __STDC_LIMIT_MACROS ;

	local compatibilityHeader = -include [ FDirName $(HAIKU_TOP) headers build
		HaikuBuildCompatibility.h ] ;
	HOST_CCFLAGS += $(compatibilityHeader) ;
	HOST_C++FLAGS += $(compatibilityHeader) ;
} else {
	HOST_LINKFLAGS += -lm ;
	HOST_LIBSTDC++ = stdc++ ;
	if $(HOST_PLATFORM) = cygwin {
		HOST_ADD_BUILD_COMPATIBILITY_LIB_DIR
			= "export PATH=$PATH:$(HOST_BUILD_COMPATIBILITY_LIB_DIR)" ;
	} else if $(HOST_PLATFORM) = darwin {
		HOST_ADD_BUILD_COMPATIBILITY_LIB_DIR
			= "export DYLD_LIBRARY_PATH=$DYLD_LIBRARY_PATH:$(HOST_BUILD_COMPATIBILITY_LIB_DIR)" ;
	} else {
		HOST_ADD_BUILD_COMPATIBILITY_LIB_DIR
			= "export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$(HOST_BUILD_COMPATIBILITY_LIB_DIR)" ;
	}

	if $(HOST_PLATFORM) = cygwin {
		# not needed
		HOST_PTHREAD_LINKFLAGS = ;
	} else if $(HOST_PLATFORM) = freebsd {
		HOST_PTHREAD_LINKFLAGS = -pthread ;
	} else {
		HOST_PTHREAD_LINKFLAGS = -pthread ;
	}

	# the C++ support library
	if $(HOST_GCC_VERSION[1]) < 3 {
		HOST_LIBSUPC++ = ;
	} else {
		HOST_LIBSUPC++ = supc++ ;
	}

	if $(HOST_PLATFORM) = darwin {
		# part of the C++ runtime lives in libstdc++ on Darwin
		HOST_LIBSUPC++ = gcc_s.1 stdc++ ;
		HOST_LIBSTDC++ = ;
	} else if $(HOST_PLATFORM) = freebsd {
		if $(HOST_CPU) = x86_64 {
			# amd64 FreeBSD 8 doesn't come without a shared libsupc++, and the
			# static one prevents us from building shared libraries. So we have
			# to work around by using the shared libstdc++.
			HOST_LIBSUPC++ = stdc++ ;
			HOST_LIBSTDC++ = ;
		}
	}

	# The BeOS compilers define __INTEL__ respectively __POWERPC__. On the
	# build platform we need to make sure, this is also defined.
	if $(HOST_CPU) = x86 {
		HOST_DEFINES += __INTEL__ ;
	} else if $(HOST_CPU) = x86_64 {
		HOST_DEFINES += __x86_64__ ;
	} else if $(HOST_CPU) = ppc {
		HOST_DEFINES += __POWERPC__ ;
	} else if $(HOST_CPU) = m68k {
		HOST_DEFINES += __M68K__ ;
	}

	# Supposing this is a glibc platform, let's try to get features like large
	# file support, ISO C 99 definitions, etc. On some platforms we need to
	# request 64 bit off_t support explicitely.
	HOST_DEFINES += _GNU_SOURCE _FILE_OFFSET_BITS=64 __STDC_FORMAT_MACROS
		__STDC_LIMIT_MACROS ;

	# On Linux with xattr support we can use it for our attribute emulation,
	# which is somewhat more robust.
	if $(HAIKU_HOST_USE_XATTR) = 1 {
		HOST_DEFINES += HAIKU_HOST_USE_XATTR ;
	} else {
		# Otherwise the generic attribute emulation is used, which uses a
		# directory per file to store its attribute. We need to redefine RM so
		# that the attributes are removed as well. We use a wrapper script,
		# which invokes a build tool. If the build tool hasn't been built yet,
		# the normal "rm" is used and the attributes are leaked (likely there
		# aren't any yet).
		RM = $(HOST_ADD_BUILD_COMPATIBILITY_LIB_DIR) ";"
			[ FDirName $(HAIKU_TOP) build scripts rm_attrs ]
			[ FDirName $(HAIKU_OBJECT_DIR) $(HOST_PLATFORM) $(HOST_ARCH) release
				tools rm_attrs ] -f ;
			# assumes that rm_attrs is built with debugging disabled
		HOST_RM_ATTRS_TARGET = <build>rm_attrs ;

		# If specified, use xattr support to tag files with unique IDs.
		if $(HAIKU_HOST_USE_XATTR_REF) = 1 {
			HOST_DEFINES += HAIKU_HOST_USE_XATTR_REF ;
		}
	}
}

# network libraries
if $(HOST_PLATFORM_HAIKU_COMPATIBLE) {
	HOST_NETWORK_LIBS = network ;
	HOST_NETAPI_LIB = bnetapi ;
	HOST_SELECT_UNAME_ETC_LIB = ;	# libroot
} else if $(HOST_PLATFORM_BONE_COMPATIBLE) {
	HOST_NETWORK_LIBS = socket bind ;
	HOST_NETAPI_LIB = bnetapi ;
	HOST_SELECT_UNAME_ETC_LIB = ;	# libroot
} else if $(HOST_PLATFORM_BEOS_COMPATIBLE) {
	HOST_NETWORK_LIBS = net ;
	HOST_NETAPI_LIB = netapi ;
	HOST_SELECT_UNAME_ETC_LIB = net ;
} else if $(HOST_PLATFORM) = "sunos" {
	HOST_NETWORK_LIBS = xnet ;
	HOST_NETAPI_LIB = ;
	HOST_SELECT_UNAME_ETC_LIB = ;
} else {
	# Linux,...
	HOST_NETWORK_LIBS = ;
	HOST_NETAPI_LIB = ;
	HOST_SELECT_UNAME_ETC_LIB = ;
}

# define the executable MIME type
HOST_EXECUTABLE_MIME_TYPE = "application/x-vnd.Be-elfexecutable" ;

if $(METROWERKS) {
	# at least parts of Haiku still can be compiled with
	# the Metrowerks compiler on BeOS/PPC
	HOST_EXECUTABLE_MIME_TYPE = "application/x-be-executable" ;
}

# Be API compatibility
HOST_BE_API_HEADERS = ;
HOST_BE_API_CCFLAGS = ;
HOST_BE_API_C++FLAGS = ;

# Add directory with system headers we need when building something for the host
# platform, e.g. containing missing POSIX/GNU headers.
HOST_HDRS += [ FDirName $(HAIKU_TOP) headers build host $(HOST_PLATFORM) ] ;

if $(HOST_PLATFORM) = freebsd {
	# FreeBSD's gcc doesn't include /usr/local/* in its search paths,
	# though that's where most things from ports wind up being installed.
	HOST_HDRS += /usr/local/include ;
	HOST_LINKFLAGS += -L/usr/local/lib ;
}

if $(HOST_PLATFORM) = darwin {
	# Mac OS X users may be using macports libraries, in which case the headers
	# and the libs are located in /opt/local/.
	HOST_HDRS += /opt/local/include ;
	HOST_LINKFLAGS += -L/opt/local/lib ;

	# Mac OS X users may be using homebrew libraries, in which case the headers
	# and the libs are locted in the /usr/local/.
	HOST_HDRS += /usr/local/include ;
	HOST_LINKFLAGS += -L/usr/local/lib ;
}

HOST_BE_API_HEADERS =
	[ FDirName $(HAIKU_TOP) headers build ]
	[ FDirName $(HAIKU_TOP) headers build os ]
	[ FDirName $(HAIKU_TOP) headers build os add-ons registrar ]
	[ FDirName $(HAIKU_TOP) headers build os app ]
	[ FDirName $(HAIKU_TOP) headers build os bluetooth ]
	[ FDirName $(HAIKU_TOP) headers build os drivers ]
	[ FDirName $(HAIKU_TOP) headers build os kernel ]
	[ FDirName $(HAIKU_TOP) headers build os interface ]
	[ FDirName $(HAIKU_TOP) headers build os locale ]
	[ FDirName $(HAIKU_TOP) headers build os storage ]
	[ FDirName $(HAIKU_TOP) headers build os support ]
	[ FDirName $(HAIKU_TOP) headers build private ]
;
if ! $(HOST_PLATFORM_BEOS_COMPATIBLE) {
	HOST_BE_API_CCFLAGS = -include BeOSBuildCompatibility.h ;
	HOST_BE_API_C++FLAGS = $(HOST_BE_API_CCFLAGS) ;
}


#pragma mark - target platform settings


# check the target platform compatibility
SetPlatformCompatibilityFlagVariables TARGET_PLATFORM : TARGET : target ;

# check the compatibility between host and target platform
if $(TARGET_PLATFORM) != haiku {
	if ! $(HOST_PLATFORM_($(TARGET_PLATFORM))_COMPATIBLE) {
		Exit ERROR: The host platform is not compatible with target platform
			$(TARGET_PLATFORM). ;
	}
}


# Haiku architecture is undefined on host-only builds
# set here to host arch to prevent recusive loops.
if $(HAIKU_HOST_BUILD_ONLY) = 1 {
	HAIKU_ARCH = $(HOST_ARCH) ;
	HAIKU_KERNEL_ARCH = $(HOST_ARCH) ;
}

# Set TARGET_* variables either from HAIKU_* or HOST_* depending on the
# specified TARGET_PLATFORM. Some variables are package architecture dependent
# and their name gets a respective suffix. A few variables exist both with and
# without suffix. The latter is either equivalent to the variable with the
# primary architecture suffix (e.g. TARGET_ARCH) or is (additionally) applicable
# for all architectures (e.g. TARGET_DEFINES).

local buildVars =
	ARCH ARCHS KERNEL_ARCH PACKAGING_ARCH PACKAGING_ARCHS

	DEFINES
	KERNEL_DEFINES

	KERNEL_CCFLAGS KERNEL_C++FLAGS
	KERNEL_PIC_CCFLAGS KERNEL_PIC_LINKFLAGS KERNEL_ADDON_LINKFLAGS
	BOOT_CCFLAGS BOOT_C++FLAGS BOOT_LINKFLAGS BOOT_LDFLAGS

	KERNEL_WARNING_CCFLAGS KERNEL_WARNING_C++FLAGS

	KERNEL_DEBUG_$(HAIKU_DEBUG_LEVELS)_CCFLAGS
	KERNEL_DEBUG_$(HAIKU_DEBUG_LEVELS)_C++FLAGS

	PRIVATE_KERNEL_HEADERS

	NETWORK_LIBS NETAPI_LIB SELECT_UNAME_ETC_LIB

	EXECUTABLE_MIME_TYPE

	OBJECT_BASE_DIR COMMON_ARCH_OBJECT_DIR
	;

local archDependentBuildVars =
	ARCH CPU GCC_VERSION

	AR CC C++ ELFEDIT LD OBJCOPY RANLIB STRIP

	ARFLAGS ASFLAGS UNARFLAGS CPPFLAGS CCFLAGS C++FLAGS HDRS LDFLAGS
	LINK LINKFLAGS

	WARNING_CCFLAGS WARNING_C++FLAGS WERROR_FLAGS

	DEBUG_$(HAIKU_DEBUG_LEVELS)_CCFLAGS DEBUG_$(HAIKU_DEBUG_LEVELS)_C++FLAGS

	INCLUDES_SEPARATOR LOCAL_INCLUDES_OPTION SYSTEM_INCLUDES_OPTION

	PRIVATE_SYSTEM_HEADERS

	ARCH_OBJECT_DIR COMMON_DEBUG_OBJECT_DIR
	DEBUG_$(HAIKU_DEBUG_LEVELS)_OBJECT_DIR
	;

if $(TARGET_PLATFORM) = haiku {
	local var ;
	for var in $(buildVars) {
		TARGET_$(var) = $(HAIKU_$(var)) ;
	}

	for var in $(archDependentBuildVars)_$(TARGET_PACKAGING_ARCHS) {
		TARGET_$(var) = $(HAIKU_$(var)) ;
	}

	TARGET_BOOT_LIBGCC		= $(HAIKU_BOOT_LIBGCC_$(TARGET_PACKAGING_ARCH)) ;
	TARGET_BOOT_LIBSUPC++	= $(HAIKU_BOOT_LIBSUPC++_$(TARGET_PACKAGING_ARCH)) ;

	TARGET_BOOT_PLATFORM	?= $(HAIKU_BOOT_PLATFORM) ;

	local architecture ;
	for architecture in $(TARGET_PACKAGING_ARCHS) {
		TARGET_DEFINES_$(architecture) = $(HAIKU_DEFINES_$(architecture)) ;
		TARGET_LIBRARY_NAME_MAP_$(architecture)
			= HAIKU_LIBRARY_NAME_MAP_$(architecture) ;
	}
} else {
	local var ;
	for var in $(buildVars) {
		TARGET_$(var) = $(HOST_$(var)) ;
	}

	for var in $(archDependentBuildVars) {
		TARGET_$(var)_$(TARGET_PACKAGING_ARCH) = $(HOST_$(var)) ;
	}

	TARGET_BOOT_LIBGCC			= ;
	TARGET_BOOT_LIBSUPC++		= ;

	TARGET_BOOT_PLATFORM		= ;

	TARGET_DEFINES_$(TARGET_PACKAGING_ARCH) = ;
		# all flags are in TARGET_DEFINES

	TARGET_LIBRARY_NAME_MAP_$(TARGET_PACKAGING_ARCH) = HOST_LIBRARY_NAME_MAP ;
}

# define macro, for identifying the platform
switch $(TARGET_PLATFORM) {
	case r5			: TARGET_DEFINES	+= HAIKU_TARGET_PLATFORM_BEOS ;
	case bone		: TARGET_DEFINES	+= HAIKU_TARGET_PLATFORM_BONE ;
	case dano		: TARGET_DEFINES	+= HAIKU_TARGET_PLATFORM_DANO ;
	case haiku_host	: TARGET_DEFINES	+= HAIKU_TARGET_PLATFORM_HAIKU ;
	case haiku		: TARGET_DEFINES	+= HAIKU_TARGET_PLATFORM_HAIKU ;
	case linux		: TARGET_DEFINES	+= HAIKU_TARGET_PLATFORM_LINUX ;
	case freebsd	: TARGET_DEFINES	+= HAIKU_TARGET_PLATFORM_FREEBSD ;
	case darwin		: TARGET_DEFINES	+= HAIKU_TARGET_PLATFORM_DARWIN ;
	case cygwin		: TARGET_DEFINES	+= HAIKU_TARGET_PLATFORM_CYGWIN ;
	case sunos		: TARGET_DEFINES	+= HAIKU_TARGET_PLATFORM_SUNOS ;
	case libbe_test	: TARGET_DEFINES	+= HAIKU_TARGET_PLATFORM_LIBBE_TEST ;
}

# define macro, for identifying the host platform
switch $(HOST_PLATFORM) {
	case r5			: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_BEOS ;
	case bone		: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_BONE ;
	case dano		: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_DANO ;
	case haiku_host	: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_HAIKU ;
	case linux		: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_LINUX ;
	case freebsd	: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_FREEBSD ;
	case darwin		: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_DARWIN ;
	case cygwin		: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_CYGWIN ;
	case sunos		: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_SUNOS ;
}

# define host platform 64 bit macro
if $(HOST_PLATFORM_IS_64_BIT) {
	HOST_DEFINES += HAIKU_HOST_PLATFORM_64_BIT ;
}

# define Haiku packaging architecture macro for host build
HOST_DEFINES += HAIKU_PACKAGING_ARCH=\\\"$(HAIKU_PACKAGING_ARCH)\\\" ;


#pragma mark -

# In case we build for a BeOS compatible platform, but not for Haiku, we
# include the HaikuBuildCompatibility.h header and link against
# libhaikucompat.a.

if ! $(TARGET_PLATFORM_HAIKU_COMPATIBLE) && $(TARGET_PLATFORM_BEOS_COMPATIBLE) {
	# headers and flags
	local compatibilityHeader = -include [ FDirName $(HAIKU_TOP) headers build
		HaikuBuildCompatibility.h ] ;
	TARGET_CCFLAGS_$(TARGET_PACKAGING_ARCH) += $(compatibilityHeader) ;
	TARGET_C++FLAGS_$(TARGET_PACKAGING_ARCH) += $(compatibilityHeader) ;

	# compatibility library
	TARGET_HAIKU_COMPATIBILITY_LIBS = libhaikucompat.a ;
}

# special target libbe_test

if $(TARGET_PLATFORM) = libbe_test {
	# headers and flags
	TARGET_HDRS_$(TARGET_PACKAGING_ARCH) +=
		[ PublicHeaders $(DOT) app drivers game interface kernel locale storage
			support ]
		[ PrivateHeaders $(DOT) ] ;
	TARGET_DEFINES += __HAIKU__ ;

	TARGET_PRIVATE_SYSTEM_HEADERS_$(TARGET_PACKAGING_ARCH) =
		[ PrivateHeaders $(DOT) system system/arch/$(TARGET_ARCH) ] ;

	# directories
	TARGET_OBJECT_BASE_DIR
		= [ FDirName $(HAIKU_OBJECT_DIR) $(TARGET_PLATFORM) ] ;
	TARGET_COMMON_ARCH_OBJECT_DIR
		= [ FDirName $(TARGET_OBJECT_BASE_DIR) common ] ;
	TARGET_ARCH_OBJECT_DIR_$(TARGET_PACKAGING_ARCH)
		= [ FDirName $(TARGET_OBJECT_BASE_DIR) $(TARGET_ARCH) ] ;
	TARGET_COMMON_DEBUG_OBJECT_DIR_$(TARGET_PACKAGING_ARCH)
		= [ FDirName $(TARGET_ARCH_OBJECT_DIR_$(TARGET_PACKAGING_ARCH))
			common ] ;
	TARGET_DEBUG_0_OBJECT_DIR_$(TARGET_PACKAGING_ARCH)
		= [ FDirName $(TARGET_ARCH_OBJECT_DIR_$(TARGET_PACKAGING_ARCH))
			release ] ;

	local level ;
	for level in $(HAIKU_DEBUG_LEVELS[2-]) {
		TARGET_DEBUG_$(level)_OBJECT_DIR_$(TARGET_PACKAGING_ARCH)
			= [ FDirName $(TARGET_ARCH_OBJECT_DIR_$(TARGET_PACKAGING_ARCH))
				debug_$(level) ] ;
	}

	# library name map
	TARGET_LIBRARY_NAME_MAP_$(TARGET_PACKAGING_ARCH) = LIBBE_LIBRARY_NAME_MAP ;
	LIBBE_LIBRARY_NAME_MAP_be = libbe_test.so ;
}


#pragma mark - common stuff


# start with a clean state
CCFLAGS = ;
C++FLAGS = ;
DEFINES = ;

# Set CC, C++, LINK to invalid values, so that we realize early, that we use
# the wrong compiler.
CC = bad-cc ;
C++ = bad-c++ ;
LINK = bad-link ;


# Defaults for warnings, optimization, and debugging.
#
WARNINGS ?= 1 ;
OPTIM ?= -O2 ;
DEBUG ?= 0 ;


# Set a sane default for whether this is a CI build.
HAIKU_CONTINUOUS_INTEGRATION_BUILD ?= 0 ;


# Set the defaults for PLATFORM and SUPPORTED_PLATFORMS. PLATFORM is only
# overridden for targets to be built for the host platform. SUPPORTED_PLATFORMS
# can be overridden by the author of a component.
PLATFORM = $(TARGET_PLATFORM) ;
SUPPORTED_PLATFORMS = haiku ;


# Define two pseudo targets for the target and buildhost platform. The main
# build rules (Cc, C++, As, ...) depend on these pseude targets such that global
# initializations that are required before anything is built for a specific
# platform can be forced by depending the pseudo target for the platform on the
# initializations.
# This is currently used to unpack the external headers from the
# gcc_syslibs_devel build feature before anything is built for the target
# platform.
NotFile $(TARGET_PLATFORM) ;
NotFile host ;


# Instructs the Library rule to not make its object files temporary.
# This is needed as some objects are used in a static library and for an
# executable.
KEEPOBJS = true ;


# Set permissions to how they should be on the image.
EXEMODE		= 755 ;
FILEMODE	= 644 ;
SHELLMODE	= 755 ;


# output directories
# TODO: Review this.
HAIKU_DOCUMENTATION_DIR ?= [ FDirName $(HAIKU_OUTPUT_DIR) documentation ] ;
HAIKU_DOCUMENTATION_OBJECT_DIR ?= [ FDirName $(HAIKU_COMMON_PLATFORM_OBJECT_DIR)
	documentation ] ;

# TODO: Rethink test stuff.
HAIKU_TEST_DIR			?= [ FDirName $(HAIKU_OUTPUT_DIR) tests
	$(TARGET_PLATFORM) $(HAIKU_ARCH) ] ;
HAIKU_APP_TEST_DIR		?= [ FDirName $(HAIKU_TEST_DIR) apps ] ;
HAIKU_APP_TEST_LIB_DIR 	?= [ FDirName $(HAIKU_APP_TEST_DIR) lib ] ;
HAIKU_TMP_DIR			?= [ FDirName $(HAIKU_OUTPUT_DIR) tmp ] ;

local architecture ;
for architecture in $(HAIKU_PACKAGING_ARCHS) {
	local baseDir
		= [ FDirName $(TARGET_OBJECT_BASE_DIR) $(architecture) packaging ] ;
	HAIKU_PACKAGES_DIR_$(architecture) = [ FDirName $(baseDir) packages ] ;
	HAIKU_PACKAGES_BUILD_DIR_$(architecture)
		= [ FDirName $(baseDir) packages_build ] ;
	HAIKU_PACKAGE_REPOSITORIES_DIR_$(architecture)
		= [ FDirName $(baseDir) repositories ] ;
}


HAIKU_PACKAGE_INFOS_DIR			= [ FDirName $(HAIKU_TOP) src data
									package_infos ] ;

TARGET_TEST_DIR				?= [ FDirName $(HAIKU_TEST_DIR)
									$(TARGET_PLATFORM) ] ;
TARGET_UNIT_TEST_DIR		?= [ FDirName $(TARGET_TEST_DIR) unittests ] ;
TARGET_UNIT_TEST_LIB_DIR	?= [ FDirName $(TARGET_UNIT_TEST_DIR) lib ] ;

# automatically setup the objects directory per subdirectory
SUBDIRRULES += SetupObjectsDir ;

# Add the standard (userland) warning flags variables to the ones restored in
# every subdirectory. Thus we can easily meddle with them in subdirectories
# with imported sources.
AUTO_SET_UP_CONFIG_VARIABLES +=
	HOST_WARNING_CCFLAGS HOST_WARNING_C++FLAGS
	TARGET_WARNING_CCFLAGS_$(TARGET_PACKAGING_ARCHS)
	TARGET_WARNING_C++FLAGS_$(TARGET_PACKAGING_ARCHS)
	;

# also add PLATFORM and SUPPORTED_PLATFORMS
AUTO_SET_UP_CONFIG_VARIABLES += PLATFORM SUPPORTED_PLATFORMS ;


# set up warnings
local architecture ;
for architecture in $(TARGET_PACKAGING_ARCHS) {
	ArchitectureSetupWarnings $(architecture) ;
}


# set up architecture build features
local architecture ;
for architecture in $(TARGET_PACKAGING_ARCHS) {
	InitArchitectureBuildFeatures $(architecture) ;
}


# The following directories cannot currently be compiled with DEBUG=1
SetConfigVar DEBUG : HAIKU_TOP src add-ons disk_systems bfs : 0 : local ;
SetConfigVar DEBUG : HAIKU_TOP src add-ons kernel drivers audio hda : 0 : local ;
SetConfigVar DEBUG : HAIKU_TOP src add-ons kernel drivers audio ac97 auich : 0 : local ; # fails with gcc4 only
SetConfigVar DEBUG : HAIKU_TOP src add-ons kernel drivers audio ac97 auvia : 0 : local ; # fails with gcc4 only
SetConfigVar DEBUG : HAIKU_TOP src add-ons kernel drivers audio ac97 sis7018 : 0 : local ;
SetConfigVar DEBUG : HAIKU_TOP src add-ons kernel file_systems btrfs : 0 : local ;
SetConfigVar DEBUG : HAIKU_TOP src add-ons kernel file_systems ntfs libntfs : 0 : local ;
SetConfigVar DEBUG : HAIKU_TOP src add-ons kernel file_systems udf : 0 : local ;
SetConfigVar DEBUG : HAIKU_TOP src add-ons kernel file_systems userlandfs server : 0 : local ; # fails with gcc2 only
SetConfigVar DEBUG : HAIKU_TOP src add-ons kernel file_systems userlandfs server haiku : 0 : local ; # fails with gcc2 only
SetConfigVar DEBUG : HAIKU_TOP src add-ons media media-add-ons dvb : 0 : local ;
SetConfigVar DEBUG : HAIKU_TOP src add-ons print drivers gutenprint : 0 : local ;
SetConfigVar DEBUG : HAIKU_TOP src servers input : 0 : local ;
SetConfigVar DEBUG : HAIKU_TOP src servers media_addon : 0 : local ;
SetConfigVar DEBUG : HAIKU_TOP src system boot loader file_systems bfs : 0 : local ;