ifndef MAKE
MAKE:=make
endif
ifndef HOSTMAKE
HOSTMAKE=$(MAKE)
endif
HOSTMAKE :=$(shell which $(HOSTMAKE) || type -p $(HOSTMAKE) || echo make)

MAKE1:=$(HOSTMAKE) -j1
MAKE:=$(HOSTMAKE) -j$(BR2_JLEVEL)

# Compute GNU_TARGET_NAME and REAL_GNU_TARGET_NAME
GNU_TARGET_NAME=$(ARCH)-linux

ifeq ($(BR2_TOOLCHAIN_BUILDROOT)$(BR2_TOOLCHAIN_CTNG_uClibc)$(BR2_TOOLCHAIN_EXTERNAL_UCLIBC),y)
LIBC=uclibc
else
LIBC=gnu
endif

# The ABI suffix is a bit special on ARM, as it needs to be
# -uclibcgnueabi for uClibc EABI, -uclibc for uClibc OABI, -gnueabi
# for glibc EABI and -gnu for glibc OABI. This means that the LIBC and
# ABI aren't strictly orthogonal, which explains why we need the test
# on LIBC below.
ifeq ($(BR2_ARM_EABI),y)
ifeq ($(LIBC),uclibc)
ABI=gnueabi
else
ABI=eabi
endif
endif

REAL_GNU_TARGET_NAME=$(ARCH)-unknown-linux-$(LIBC)$(ABI)

STAGING_DIR=$(HOST_DIR)/usr/$(REAL_GNU_TARGET_NAME)/sysroot

ifeq ($(BR2_OPTIMIZE_0),y)
TARGET_OPTIMIZATION+=-O0
endif
ifeq ($(BR2_OPTIMIZE_1),y)
TARGET_OPTIMIZATION+=-O1
endif
ifeq ($(BR2_OPTIMIZE_2),y)
TARGET_OPTIMIZATION+=-O2
endif
ifeq ($(BR2_OPTIMIZE_3),y)
TARGET_OPTIMIZATION+=-O3
endif
ifeq ($(BR2_OPTIMIZE_S),y)
TARGET_OPTIMIZATION+=-Os
endif
ifeq ($(BR2_DEBUG_1),y)
TARGET_DEBUGGING=-g1
endif
ifeq ($(BR2_DEBUG_2),y)
TARGET_DEBUGGING=-g2
endif
ifeq ($(BR2_DEBUG_3),y)
TARGET_DEBUGGING=-g3
endif

TARGET_CFLAGS=$(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING)

CC_TARGET_TUNE_:=$(call qstrip,$(BR2_GCC_TARGET_TUNE))
CC_TARGET_ARCH_:=$(call qstrip,$(BR2_GCC_TARGET_ARCH))
CC_TARGET_ABI_:=$(call qstrip,$(BR2_GCC_TARGET_ABI))

ifneq ($(CC_TARGET_TUNE_),)
TARGET_CFLAGS+=-mtune=$(CC_TARGET_TUNE_)
endif
ifneq ($(CC_TARGET_ARCH_),)
TARGET_CFLAGS+=-march=$(CC_TARGET_ARCH_)
endif
ifneq ($(CC_TARGET_ABI_),)
TARGET_CFLAGS+=-mabi=$(CC_TARGET_ABI_)
endif

ifneq ($(BR2_PREFER_STATIC_LIB),y)
ifeq ($(BR2_x86_64),y)
TARGET_CFLAGS+=-fPIC -DPIC
endif # PIC for dynamic objects on x86_64
endif

ifeq ($(BR2_SOFT_FLOAT),y)
TARGET_CFLAGS+=-msoft-float
endif

ifeq ($(BR2_VFP_FLOAT),y)
TARGET_CFLAGS+=-mfpu=vfp
endif

ifeq ($(findstring yy,$(BR2_mips)$(BR2_MIPS_ABI64)),yy)
TARGET_CFLAGS+=-fno-pic -mno-abicalls
endif

ifeq ($(BR2_LARGEFILE),y)
TARGET_CFLAGS+=-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
endif

ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
TARGET_CFLAGS+=-I$(STAGING_DIR)/usr/include -I$(STAGING_DIR)/include
endif

TARGET_LDFLAGS+=-L$(STAGING_DIR)/lib -L$(STAGING_DIR)/usr/lib
TARGET_CXXFLAGS=$(TARGET_CFLAGS)
TARGET_SYSROOT_OPT=--sysroot=$(STAGING_DIR)

ifeq ($(BR2_TOOLCHAIN_BUILDROOT)$(BR2_TOOLCHAIN_CTNG),y)
TARGET_CROSS=$(HOST_DIR)/usr/bin/$(REAL_GNU_TARGET_NAME)-
else ifeq ($(BR2_TOOLCHAIN_EXTERNAL),y)
TOOLCHAIN_EXTERNAL_PREFIX=$(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PREFIX))
ifeq ($(BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD),y)
TOOLCHAIN_EXTERNAL_LOCATION=$(TOOLCHAIN_EXTERNAL_DIR)
else
TOOLCHAIN_EXTERNAL_LOCATION=$(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PATH))
endif
TARGET_CROSS=$(TOOLCHAIN_EXTERNAL_LOCATION)/bin/$(TOOLCHAIN_EXTERNAL_PREFIX)-
endif

# Quotes are needed for spaces et al in path components.
TARGET_PATH="$(HOST_DIR)/bin:$(HOST_DIR)/usr/bin:$(HOST_DIR)/usr/sbin/:$(PATH)"

# Define TARGET_xx variables for all common binutils/gcc tools by
# including the --sysroot option where necessary.
TARGET_AR       = $(TARGET_CROSS)ar
TARGET_AS       = $(TARGET_CROSS)as
TARGET_CC       = $(TARGET_CROSS)gcc $(TARGET_SYSROOT_OPT)
TARGET_CPP      = $(TARGET_CROSS)cpp $(TARGET_SYSROOT_OPT)
TARGET_CXX      = $(TARGET_CROSS)g++ $(TARGET_SYSROOT_OPT)
TARGET_FC       = $(TARGET_CROSS)gfortran $(TARGET_SYSROOT_OPT)
TARGET_LD       = $(TARGET_CROSS)ld $(TARGET_SYSROOT_OPT)
TARGET_NM       = $(TARGET_CROSS)nm
TARGET_RANLIB   = $(TARGET_CROSS)ranlib
TARGET_OBJCOPY  = $(TARGET_CROSS)objcopy
TARGET_OBJDUMP  = $(TARGET_CROSS)objdump

TARGET_CC_NOCCACHE  := $(TARGET_CC)
TARGET_CXX_NOCCACHE := $(TARGET_CXX)

ifeq ($(BR2_CCACHE),y)
TARGET_CC  := $(CCACHE) $(TARGET_CC)
TARGET_CXX := $(CCACHE) $(TARGET_CXX)
endif

# * CMake doesn't support having the --sysroot option directly in the
#   compiler path, so move this option to CFLAGS/CXXFLAGS variables.
# * Don't use ccache because then CMake will fail to detect compiler.
CMAKE_TARGET_CC = $(filter-out --sysroot=%,$(TARGET_CC_NOCCACHE))
CMAKE_TARGET_CXX = $(filter-out --sysroot=%,$(TARGET_CXX_NOCCACHE))
CMAKE_TARGET_CFLAGS = $(filter --sysroot=%,$(TARGET_CC_NOCCACHE)) $(TARGET_CFLAGS)
CMAKE_TARGET_CXXFLAGS = $(filter --sysroot=%,$(TARGET_CXX_NOCCACHE)) $(TARGET_CXXFLAGS)

ifeq ($(BR2_STRIP_strip),y)
STRIP_DISCARD_ALL:=--discard-all
STRIP_STRIP_UNNEEDED:=--strip-unneeded
STRIP_STRIP_ALL:=--strip-all
TARGET_STRIP=$(TARGET_CROSS)strip
STRIPCMD=$(TARGET_CROSS)strip --remove-section=.comment --remove-section=.note
KSTRIPCMD=$(STRIPCMD) $(STRIP_STRIP_UNNEEDED)
endif
ifeq ($(BR2_STRIP_sstrip),y)
STRIP_DISCARD_ALL:=
STRIP_STRIP_UNNEEDED:=
STRIP_STRIP_ALL:=
TARGET_STRIP=$(HOST_DIR)/usr/bin/$(REAL_GNU_TARGET_NAME)-sstrip
STRIPCMD=$(TARGET_STRIP)
KSTRIPCMD=$(TARGET_CROSS)strip --remove-section=.comment --remove-section=.note --strip-unneeded
endif
ifeq ($(BR2_STRIP_none),y)
TARGET_STRIP=true
STRIPCMD=$(TARGET_STRIP)
KSTRIPCMD=$(TARGET_STRIP)
endif
INSTALL:=$(shell which install || type -p install)
FLEX:=$(shell which flex || type -p flex)
BISON:=$(shell which bison || type -p bison)
SED:=$(shell which sed || type -p sed) -i -e

HOST_CFLAGS   ?= -O2
HOST_CFLAGS   += -I$(HOST_DIR)/include -I$(HOST_DIR)/usr/include
HOST_CXXFLAGS += -I$(HOST_DIR)/include -I$(HOST_DIR)/usr/include
HOST_LDFLAGS  += -L$(HOST_DIR)/lib -L$(HOST_DIR)/usr/lib -Wl,-rpath,$(HOST_DIR)/usr/lib
HOST_PATH=$(HOST_DIR)/bin:$(HOST_DIR)/usr/bin:$(PATH)

# hostcc version as an integer - E.G. 4.3.2 => 432
HOSTCC_VERSION:=$(shell $(HOSTCC_NOCCACHE) --version | \
	sed -n 's/^.* \([0-9]*\)\.\([0-9]*\)\.\([0-9]*\)[ ]*.*$$/\1\2\3/p')

TARGET_CONFIGURE_OPTS=PATH=$(TARGET_PATH) \
		AR="$(TARGET_AR)" \
		AS="$(TARGET_AS)" \
		LD="$(TARGET_LD)" \
		NM="$(TARGET_NM)" \
		CC="$(TARGET_CC)" \
		GCC="$(TARGET_CC)" \
		CPP="$(TARGET_CPP)" \
		CXX="$(TARGET_CXX)" \
		FC="$(TARGET_FC)" \
		RANLIB="$(TARGET_RANLIB)" \
		STRIP="$(TARGET_STRIP)" \
		OBJCOPY="$(TARGET_OBJCOPY)" \
		OBJDUMP="$(TARGET_OBJDUMP)" \
		AR_FOR_BUILD="$(HOSTAR)" \
		AS_FOR_BUILD="$(HOSTAS)" \
		CC_FOR_BUILD="$(HOSTCC)" \
		GCC_FOR_BUILD="$(HOSTCC)" \
		CXX_FOR_BUILD="$(HOSTCXX)" \
		FC_FOR_BUILD="$(HOSTFC)" \
		LD_FOR_BUILD="$(HOSTLD)" \
		CFLAGS_FOR_BUILD="$(HOST_CFLAGS)" \
		CXXFLAGS_FOR_BUILD="$(HOST_CXXFLAGS)" \
		LDFLAGS_FOR_BUILD="$(HOST_LDFLAGS)" \
		FCFLAGS_FOR_BUILD="$(HOST_FCFLAGS)" \
		DEFAULT_ASSEMBLER="$(TARGET_AS)" \
		DEFAULT_LINKER="$(TARGET_LD)" \
		CFLAGS="$(TARGET_CFLAGS)" \
		CXXFLAGS="$(TARGET_CXXFLAGS)" \
		LDFLAGS="$(TARGET_LDFLAGS)" \
		FCFLAGS="$(TARGET_FCFLAGS)" \
		PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" \
		PERLLIB="$(HOST_DIR)/usr/lib/perl" \
		STAGING_DIR="$(STAGING_DIR)"

TARGET_MAKE_ENV=PATH=$(TARGET_PATH) \
		PERLLIB="$(HOST_DIR)/usr/lib/perl"

HOST_CONFIGURE_OPTS=PATH=$(HOST_PATH) \
		AR="$(HOSTAR)" \
		AS="$(HOSTAS)" \
		LD="$(HOSTLD)" \
		NM="$(HOSTNM)" \
		CC="$(HOSTCC)" \
		GCC="$(HOSTCC)" \
		CXX="$(HOSTCXX)" \
		CPP="$(HOSTCPP)" \
		CFLAGS="$(HOST_CFLAGS)" \
		CXXFLAGS="$(HOST_CXXFLAGS)" \
		LDFLAGS="$(HOST_LDFLAGS)" \
		PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 \
		PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 \
		PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" \
		PKG_CONFIG_SYSROOT_DIR="/" \
		PKG_CONFIG_LIBDIR="$(HOST_DIR)/usr/lib/pkgconfig" \
		PERLLIB="$(HOST_DIR)/usr/lib/perl" \
		LD_LIBRARY_PATH="$(HOST_DIR)/usr/lib:$(LD_LIBRARY_PATH)"

HOST_MAKE_ENV=PATH=$(HOST_PATH) \
		LD_LIBRARY_PATH="$(HOST_DIR)/usr/lib:$(LD_LIBRARY_PATH)" \
		PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" \
		PKG_CONFIG_LIBDIR="$(HOST_DIR)/usr/lib/pkgconfig" \
		PERLLIB="$(HOST_DIR)/usr/lib/perl"


#######################################################################
# settings we need to pass to configure

# does unaligned access trap?
BR2_AC_CV_TRAP_CHECK=ac_cv_lbl_unaligned_fail=yes
ifeq ($(BR2_i386),y)
BR2_AC_CV_TRAP_CHECK=ac_cv_lbl_unaligned_fail=no
endif
ifeq ($(BR2_x86_64),y)
BR2_AC_CV_TRAP_CHECK=ac_cv_lbl_unaligned_fail=no
endif
ifeq ($(BR2_m68k),y)
BR2_AC_CV_TRAP_CHECK=ac_cv_lbl_unaligned_fail=no
endif
ifeq ($(BR2_powerpc)$(BR2_ENDIAN),yBIG)
BR2_AC_CV_TRAP_CHECK=ac_cv_lbl_unaligned_fail=no
endif

ifeq ($(BR2_ENDIAN),"BIG")
BR2_AC_CV_C_BIGENDIAN=ac_cv_c_bigendian=yes
else
BR2_AC_CV_C_BIGENDIAN=ac_cv_c_bigendian=no
endif

TARGET_CONFIGURE_ARGS= \
	$(BR2_AC_CV_TRAP_CHECK) \
	ac_cv_func_mmap_fixed_mapped=yes \
	ac_cv_func_memcmp_working=yes \
	ac_cv_have_decl_malloc=yes \
	gl_cv_func_malloc_0_nonnull=yes \
	ac_cv_func_malloc_0_nonnull=yes \
	ac_cv_func_calloc_0_nonnull=yes \
	ac_cv_func_realloc_0_nonnull=yes \
	$(BR2_AC_CV_C_BIGENDIAN)

#######################################################################

ifeq ($(BR2_ENABLE_LOCALE),y)
DISABLE_NLS:=
else
DISABLE_NLS:=--disable-nls
endif

ifneq ($(BR2_LARGEFILE),y)
DISABLE_LARGEFILE= --disable-largefile
endif

ifneq ($(BR2_HAVE_DOCUMENTATION),y)
DISABLE_DOCUMENTATION=--disable-gtk-doc
endif

ifneq ($(BR2_INET_IPV6),y)
DISABLE_IPV6= --disable-ipv6
endif

ifneq ($(BR2_INSTALL_LIBSTDCPP),y)
TARGET_CONFIGURE_OPTS+=CXX=false
endif

ifeq ($(BR2_ENABLE_DEBUG),y)
ENABLE_DEBUG:=--enable-debug
else
ENABLE_DEBUG:=
endif

include package/Makefile.autotools.in
include package/Makefile.cmake.in
include package/Makefile.package.in