mirror of
https://git.busybox.net/buildroot.git
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381616e77a
Currently, when we need to do a conditional on the type of C library used, we need to take into account the three toolchain backends. As we are going to add eglibc support to the Buildroot toolchain backend, it would become even uglier, so this patch introduces two new hidden options: BR2_TOOLCHAIN_USES_UCLIBC and BR2_TOOLCHAIN_USES_GLIBC, that exist regardless of the toolchain backend. The entire Buildroot code base is converted to use those options. Note that we have intentionally created only one option (BR2_TOOLCHAIN_USES_GLIBC) for both glibc and eglibc, since they are essentially the same, as far as Buildroot is concerned. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
349 lines
9.7 KiB
Makefile
349 lines
9.7 KiB
Makefile
ifndef MAKE
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MAKE:=make
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endif
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ifndef HOSTMAKE
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HOSTMAKE=$(MAKE)
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endif
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HOSTMAKE :=$(shell which $(HOSTMAKE) || type -p $(HOSTMAKE) || echo make)
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# If BR2_LEVEL is 0, scale the maximum concurrency with the number of
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# CPUs. An additional job is used in order to keep processors busy
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# while waiting on I/O.
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# If the number of processors is not available, assume one.
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ifeq ($(BR2_JLEVEL),0)
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PARALLEL_JOBS:=$(shell echo \
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$$((1 + `getconf _NPROCESSORS_ONLN 2>/dev/null || echo 1`)))
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else
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PARALLEL_JOBS:=$(BR2_JLEVEL)
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endif
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MAKE1:=$(HOSTMAKE) -j1
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MAKE:=$(HOSTMAKE) -j$(PARALLEL_JOBS)
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# Compute GNU_TARGET_NAME
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GNU_TARGET_NAME=$(ARCH)-buildroot-linux-$(LIBC)$(ABI)
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ifeq ($(BR2_TOOLCHAIN_USES_UCLIBC),y)
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LIBC=uclibc
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else
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LIBC=gnu
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endif
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# The ABI suffix is a bit special on ARM, as it needs to be
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# -uclibcgnueabi for uClibc EABI, -uclibc for uClibc OABI, -gnueabi
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# for glibc EABI and -gnu for glibc OABI. This means that the LIBC and
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# ABI aren't strictly orthogonal, which explains why we need the test
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# on LIBC below.
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ifeq ($(BR2_ARM_EABI),y)
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ifeq ($(LIBC),uclibc)
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ABI=gnueabi
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else
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ABI=eabi
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endif
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endif
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# For FSL PowerPC there's SPE
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ifeq ($(BR2_powerpc_SPE),y)
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ABI=spe
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# MPC8540s are e500v1 with single precision FP
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ifeq ($(BR2_powerpc_8540),y)
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TARGET_ABI+=-mabi=spe -mfloat-gprs=single -Wa,-me500
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endif
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ifeq ($(BR2_powerpc_8548),y)
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TARGET_ABI+=-mabi=spe -mfloat-gprs=double -Wa,-me500x2
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endif
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ifeq ($(BR2_powerpc_e500mc),y)
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TARGET_ABI+=-mabi=spe -mfloat-gprs=double -Wa,-me500mc
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endif
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endif
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# Use longcalls option for Xtensa globally.
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# The 'longcalls' option allows calls across a greater range of addresses,
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# and is required for some packages. While this option can degrade both
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# code size and performance, the linker can usually optimize away the
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# overhead when a call ends up within a certain range.
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ifeq ($(BR2_xtensa),y)
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TARGET_ABI += -mlongcalls
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endif
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STAGING_SUBDIR = usr/$(GNU_TARGET_NAME)/sysroot
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STAGING_DIR = $(HOST_DIR)/$(STAGING_SUBDIR)
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TARGET_OPTIMIZATION:=$(call qstrip,$(BR2_TARGET_OPTIMIZATION))
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ifeq ($(BR2_OPTIMIZE_0),y)
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TARGET_OPTIMIZATION+=-O0
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endif
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ifeq ($(BR2_OPTIMIZE_1),y)
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TARGET_OPTIMIZATION+=-O1
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endif
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ifeq ($(BR2_OPTIMIZE_2),y)
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TARGET_OPTIMIZATION+=-O2
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endif
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ifeq ($(BR2_OPTIMIZE_3),y)
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TARGET_OPTIMIZATION+=-O3
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endif
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ifeq ($(BR2_OPTIMIZE_S),y)
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TARGET_OPTIMIZATION+=-Os
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endif
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ifeq ($(BR2_DEBUG_1),y)
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TARGET_DEBUGGING=-g1
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endif
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ifeq ($(BR2_DEBUG_2),y)
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TARGET_DEBUGGING=-g2
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endif
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ifeq ($(BR2_DEBUG_3),y)
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TARGET_DEBUGGING=-g3
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endif
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ifeq ($(BR2_LARGEFILE),y)
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TARGET_CPPFLAGS += -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
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endif
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TARGET_CFLAGS = $(TARGET_CPPFLAGS) $(TARGET_ABI) $(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING)
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TARGET_CXXFLAGS = $(TARGET_CFLAGS)
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TARGET_LDFLAGS = $(call qstrip,$(BR2_TARGET_LDFLAGS))
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ifeq ($(BR2_BINFMT_FLAT),y)
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TARGET_LDFLAGS += $(if $($(PKG)_FLAT_STACKSIZE),-Wl$(comma)-elf2flt=-s$($(PKG)_FLAT_STACKSIZE))
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endif
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ifeq ($(BR2_BINFMT_FLAT_SHARED),y)
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TARGET_LDFLAGS += -mid-shared-library -mshared-library-id=0
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TARGET_CFLAGS += -mid-shared-library -mshared-library-id=0
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TARGET_CXXFLAGS += -mid-shared-library -mshared-library-id=0
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endif
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ifeq ($(BR2_BINFMT_FLAT_SEP_DATA),y)
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TARGET_LDFLAGS += -msep-data
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TARGET_CFLAGS += -msep-data
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TARGET_CXXFLAGS += -msep-data
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endif
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ifeq ($(BR2_TOOLCHAIN_BUILDROOT)$(BR2_TOOLCHAIN_CTNG),y)
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TARGET_CROSS=$(HOST_DIR)/usr/bin/$(GNU_TARGET_NAME)-
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else
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TARGET_CROSS=$(HOST_DIR)/usr/bin/$(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PREFIX))-
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endif
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# Quotes are needed for spaces et al in path components.
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TARGET_PATH="$(HOST_DIR)/bin:$(HOST_DIR)/usr/bin:$(HOST_DIR)/usr/sbin/:$(PATH)"
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# Define TARGET_xx variables for all common binutils/gcc tools by
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# including the --sysroot option where necessary.
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TARGET_AR = $(TARGET_CROSS)ar
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TARGET_AS = $(TARGET_CROSS)as
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TARGET_CC = $(TARGET_CROSS)gcc
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TARGET_CPP = $(TARGET_CROSS)cpp
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TARGET_CXX = $(TARGET_CROSS)g++
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TARGET_FC = $(TARGET_CROSS)gfortran
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TARGET_LD = $(TARGET_CROSS)ld
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TARGET_NM = $(TARGET_CROSS)nm
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TARGET_RANLIB = $(TARGET_CROSS)ranlib
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TARGET_READELF = $(TARGET_CROSS)readelf
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TARGET_OBJCOPY = $(TARGET_CROSS)objcopy
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TARGET_OBJDUMP = $(TARGET_CROSS)objdump
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TARGET_CC_NOCCACHE := $(TARGET_CC)
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TARGET_CXX_NOCCACHE := $(TARGET_CXX)
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ifeq ($(BR2_CCACHE),y)
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TARGET_CC := $(CCACHE) $(TARGET_CC)
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TARGET_CXX := $(CCACHE) $(TARGET_CXX)
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endif
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ifeq ($(BR2_STRIP_strip),y)
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STRIP_STRIP_DEBUG:=--strip-debug
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STRIP_STRIP_UNNEEDED:=--strip-unneeded
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STRIP_STRIP_ALL:=--strip-all
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TARGET_STRIP=$(TARGET_CROSS)strip
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STRIPCMD=$(TARGET_CROSS)strip --remove-section=.comment --remove-section=.note
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KSTRIPCMD=$(STRIPCMD) $(STRIP_STRIP_UNNEEDED)
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endif
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ifeq ($(BR2_STRIP_sstrip),y)
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STRIP_STRIP_DEBUG:=
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STRIP_STRIP_UNNEEDED:=
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STRIP_STRIP_ALL:=
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TARGET_STRIP=$(HOST_DIR)/usr/bin/$(GNU_TARGET_NAME)-sstrip
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STRIPCMD=$(TARGET_STRIP)
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KSTRIPCMD=$(TARGET_CROSS)strip --remove-section=.comment --remove-section=.note --strip-unneeded
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endif
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ifeq ($(BR2_STRIP_none),y)
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TARGET_STRIP=true
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STRIPCMD=$(TARGET_STRIP)
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KSTRIPCMD=$(TARGET_STRIP)
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endif
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INSTALL:=$(shell which install || type -p install)
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FLEX:=$(shell which flex || type -p flex)
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BISON:=$(shell which bison || type -p bison)
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SED:=$(shell which sed || type -p sed) -i -e
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HOST_CPPFLAGS = -I$(HOST_DIR)/usr/include
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HOST_CFLAGS ?= -O2
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HOST_CFLAGS += $(HOST_CPPFLAGS)
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HOST_CXXFLAGS += $(HOST_CFLAGS)
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HOST_LDFLAGS += -L$(HOST_DIR)/lib -L$(HOST_DIR)/usr/lib -Wl,-rpath,$(HOST_DIR)/usr/lib
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HOST_PATH=$(HOST_DIR)/bin:$(HOST_DIR)/usr/bin:$(PATH)
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# hostcc version as an integer - E.G. 4.3.2 => 432
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HOSTCC_VERSION:=$(shell $(HOSTCC_NOCCACHE) --version | \
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sed -n 's/^.* \([0-9]*\)\.\([0-9]*\)\.\([0-9]*\)[ ]*.*$$/\1\2\3/p')
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TARGET_CONFIGURE_OPTS=PATH=$(TARGET_PATH) \
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AR="$(TARGET_AR)" \
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AS="$(TARGET_AS)" \
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LD="$(TARGET_LD)" \
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NM="$(TARGET_NM)" \
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CC="$(TARGET_CC)" \
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GCC="$(TARGET_CC)" \
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CPP="$(TARGET_CPP)" \
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CXX="$(TARGET_CXX)" \
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FC="$(TARGET_FC)" \
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RANLIB="$(TARGET_RANLIB)" \
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READELF="$(TARGET_READELF)" \
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STRIP="$(TARGET_STRIP)" \
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OBJCOPY="$(TARGET_OBJCOPY)" \
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OBJDUMP="$(TARGET_OBJDUMP)" \
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AR_FOR_BUILD="$(HOSTAR)" \
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AS_FOR_BUILD="$(HOSTAS)" \
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CC_FOR_BUILD="$(HOSTCC)" \
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GCC_FOR_BUILD="$(HOSTCC)" \
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CXX_FOR_BUILD="$(HOSTCXX)" \
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FC_FOR_BUILD="$(HOSTFC)" \
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LD_FOR_BUILD="$(HOSTLD)" \
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CPPFLAGS_FOR_BUILD="$(HOST_CPPFLAGS)" \
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CFLAGS_FOR_BUILD="$(HOST_CFLAGS)" \
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CXXFLAGS_FOR_BUILD="$(HOST_CXXFLAGS)" \
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LDFLAGS_FOR_BUILD="$(HOST_LDFLAGS)" \
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FCFLAGS_FOR_BUILD="$(HOST_FCFLAGS)" \
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DEFAULT_ASSEMBLER="$(TARGET_AS)" \
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DEFAULT_LINKER="$(TARGET_LD)" \
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CPPFLAGS="$(TARGET_CPPFLAGS)" \
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CFLAGS="$(TARGET_CFLAGS)" \
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CXXFLAGS="$(TARGET_CXXFLAGS)" \
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LDFLAGS="$(TARGET_LDFLAGS)" \
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FCFLAGS="$(TARGET_FCFLAGS)" \
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PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" \
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PERLLIB="$(HOST_DIR)/usr/lib/perl" \
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STAGING_DIR="$(STAGING_DIR)"
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TARGET_MAKE_ENV=PATH=$(TARGET_PATH) \
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PERLLIB="$(HOST_DIR)/usr/lib/perl"
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HOST_CONFIGURE_OPTS=PATH=$(HOST_PATH) \
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AR="$(HOSTAR)" \
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AS="$(HOSTAS)" \
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LD="$(HOSTLD)" \
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NM="$(HOSTNM)" \
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CC="$(HOSTCC)" \
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GCC="$(HOSTCC)" \
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CXX="$(HOSTCXX)" \
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CPP="$(HOSTCPP)" \
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CPPFLAGS="$(HOST_CPPFLAGS)" \
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CFLAGS="$(HOST_CFLAGS)" \
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CXXFLAGS="$(HOST_CXXFLAGS)" \
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LDFLAGS="$(HOST_LDFLAGS)" \
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PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 \
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PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 \
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PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" \
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PKG_CONFIG_SYSROOT_DIR="/" \
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PKG_CONFIG_LIBDIR="$(HOST_DIR)/usr/lib/pkgconfig:$(HOST_DIR)/usr/share/pkgconfig" \
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PERLLIB="$(HOST_DIR)/usr/lib/perl" \
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LD_LIBRARY_PATH="$(HOST_DIR)/usr/lib:$(LD_LIBRARY_PATH)"
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HOST_MAKE_ENV=PATH=$(HOST_PATH) \
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LD_LIBRARY_PATH="$(HOST_DIR)/usr/lib:$(LD_LIBRARY_PATH)" \
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PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" \
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PKG_CONFIG_SYSROOT_DIR="/" \
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PKG_CONFIG_LIBDIR="$(HOST_DIR)/usr/lib/pkgconfig" \
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PERLLIB="$(HOST_DIR)/usr/lib/perl"
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################################################################################
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# settings we need to pass to configure
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# does unaligned access trap?
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BR2_AC_CV_TRAP_CHECK=ac_cv_lbl_unaligned_fail=yes
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ifeq ($(BR2_i386),y)
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BR2_AC_CV_TRAP_CHECK=ac_cv_lbl_unaligned_fail=no
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endif
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ifeq ($(BR2_x86_64),y)
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BR2_AC_CV_TRAP_CHECK=ac_cv_lbl_unaligned_fail=no
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endif
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ifeq ($(BR2_m68k),y)
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BR2_AC_CV_TRAP_CHECK=ac_cv_lbl_unaligned_fail=no
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endif
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ifeq ($(BR2_powerpc)$(BR2_ENDIAN),yBIG)
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BR2_AC_CV_TRAP_CHECK=ac_cv_lbl_unaligned_fail=no
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endif
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ifeq ($(BR2_ENDIAN),"BIG")
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BR2_AC_CV_C_BIGENDIAN=ac_cv_c_bigendian=yes
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else
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BR2_AC_CV_C_BIGENDIAN=ac_cv_c_bigendian=no
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endif
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TARGET_CONFIGURE_ARGS= \
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$(BR2_AC_CV_TRAP_CHECK) \
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ac_cv_func_mmap_fixed_mapped=yes \
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ac_cv_func_memcmp_working=yes \
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ac_cv_have_decl_malloc=yes \
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gl_cv_func_malloc_0_nonnull=yes \
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ac_cv_func_malloc_0_nonnull=yes \
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ac_cv_func_calloc_0_nonnull=yes \
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ac_cv_func_realloc_0_nonnull=yes \
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lt_cv_sys_lib_search_path_spec="" \
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$(BR2_AC_CV_C_BIGENDIAN)
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################################################################################
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ifeq ($(BR2_ENABLE_LOCALE),y)
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DISABLE_NLS:=
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else
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DISABLE_NLS:=--disable-nls
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endif
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ifneq ($(BR2_LARGEFILE),y)
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DISABLE_LARGEFILE= --disable-largefile
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endif
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ifneq ($(BR2_HAVE_DOCUMENTATION),y)
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# The configure option varies, but since unknown options are ignored
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# we can pass all of them.
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DISABLE_DOCUMENTATION = \
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--disable-gtk-doc \
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--disable-doc \
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--disable-docs \
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--disable-documentation \
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--with-xmlto=no \
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--with-fop=no
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endif
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ifeq ($(BR2_INET_IPV6),y)
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DISABLE_IPV6= --enable-ipv6
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else
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DISABLE_IPV6= --disable-ipv6
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endif
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ifneq ($(BR2_INSTALL_LIBSTDCPP),y)
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TARGET_CONFIGURE_OPTS+=CXX=false
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endif
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ifeq ($(BR2_ENABLE_DEBUG),y)
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ENABLE_DEBUG:=--enable-debug
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else
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ENABLE_DEBUG:=
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endif
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ifeq ($(BR2_PREFER_STATIC_LIB),y)
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SHARED_STATIC_LIBS_OPTS=--enable-static --disable-shared
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TARGET_LDFLAGS += --static
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else
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SHARED_STATIC_LIBS_OPTS=--enable-static --enable-shared
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endif
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include package/pkg-utils.mk
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include package/pkg-download.mk
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include package/pkg-autotools.mk
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include package/pkg-cmake.mk
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include package/pkg-generic.mk
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