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Rules.mak
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Rules.mak
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# Rules.make for uClibc
#
# Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
#
# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
#
# check for proper make version
ifneq ($(findstring 3.7,$(MAKE_VERSION)),)
$(error Your make is too old $(MAKE_VERSION). Go get at least 3.80)
endif
#-----------------------------------------------------------
# This file contains rules which are shared between multiple
# Makefiles. All normal configuration options live in the
# file named ".config". Don't mess with this file unless
# you know what you are doing.
#-----------------------------------------------------------
# If you are running a cross compiler, you will want to set
# 'CROSS' to something more interesting ... Target
# architecture is determined by asking the CC compiler what
# arch it compiles things for, so unless your compiler is
# broken, you should not need to specify TARGET_ARCH.
#
# Most people will set this stuff on the command line, i.e.
# make CROSS=arm-linux-
# will build uClibc for 'arm'.
ifndef CROSS
CROSS=
endif
CC = $(CROSS)gcc
AR = $(CROSS)ar
LD = $(CROSS)ld
NM = $(CROSS)nm
STRIPTOOL = $(CROSS)strip
INSTALL = install
LN = ln
RM = rm -f
TAR = tar
STRIP_FLAGS ?= -x -R .note -R .comment
# Select the compiler needed to build binaries for your development system
HOSTCC = gcc
BUILD_CFLAGS = -O2 -Wall
# Modify Makefile variables for KLEE build
include $(dir $(lastword $(MAKEFILE_LIST)))/Makefile.klee
export ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun.*/sparc/ -e s/sparc.*/sparc/ \
-e s/arm.*/arm/ -e s/sa110/arm/ -e s/sh.*/sh/ \
-e s/s390x/s390/ -e s/parisc.*/hppa/ \
-e s/ppc.*/powerpc/ -e s/mips.*/mips/ )
#---------------------------------------------------------
# Nothing beyond this point should ever be touched by mere
# mortals. Unless you hang out with the gods, you should
# probably leave all this stuff alone.
# Pull in the user's uClibc configuration
ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
-include $(top_builddir).config
endif
# Make certain these contain a final "/", but no "//"s.
TARGET_ARCH:=$(shell grep -s '^TARGET_ARCH' $(top_builddir)/.config | sed -e 's/^TARGET_ARCH=//' -e 's/"//g')
TARGET_ARCH:=$(strip $(subst ",, $(strip $(TARGET_ARCH))))
TARGET_SUBARCH:=$(shell grep -s '^TARGET_SUBARCH' $(top_builddir)/.config | sed -e 's/^TARGET_SUBARCH=//' -e 's/"//g')
TARGET_SUBARCH:=$(strip $(subst ",, $(strip $(TARGET_SUBARCH))))
RUNTIME_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(RUNTIME_PREFIX))))))
DEVEL_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(DEVEL_PREFIX))))))
KERNEL_HEADERS:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(KERNEL_HEADERS))))))
export RUNTIME_PREFIX DEVEL_PREFIX KERNEL_HEADERS
# Now config hard core
MAJOR_VERSION := 0
MINOR_VERSION := 9
SUBLEVEL := 29
EXTRAVERSION :=
VERSION := $(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
ifneq ($(EXTRAVERSION),)
VERSION := $(VERSION)$(EXTRAVERSION)
endif
# Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
LC_ALL := C
export MAJOR_VERSION MINOR_VERSION SUBLEVEL VERSION LC_ALL
LIBC := libc
SHARED_MAJORNAME := $(LIBC).so.$(MAJOR_VERSION)
ifneq ($(findstring $(TARGET_ARCH) , hppa64 ia64 mips64 powerpc64 s390x sh64 sparc64 x86_64 ),)
UCLIBC_LDSO_NAME := ld64-uClibc
else
UCLIBC_LDSO_NAME := ld-uClibc
endif
UCLIBC_LDSO := $(UCLIBC_LDSO_NAME).so.$(MAJOR_VERSION)
NONSHARED_LIBNAME := uclibc_nonshared.a
libc := $(top_builddir)lib/$(SHARED_MAJORNAME)
interp := $(top_builddir)lib/interp.os
ldso := $(top_builddir)lib/$(UCLIBC_LDSO)
headers_dep := $(top_builddir)include/bits/sysnum.h
sub_headers := $(headers_dep)
#LIBS :=$(interp) -L$(top_builddir)lib -lc
LIBS := $(interp) -L$(top_builddir)lib $(libc:.$(MAJOR_VERSION)=)
# Make sure DESTDIR and PREFIX can be used to install
# PREFIX is a uClibcism while DESTDIR is a common GNUism
ifndef PREFIX
PREFIX = $(DESTDIR)
endif
ifneq ($(HAVE_SHARED),y)
libc :=
interp :=
ldso :=
endif
ifndef CROSS
CROSS=$(subst ",, $(strip $(CROSS_COMPILER_PREFIX)))
endif
# A nifty macro to make testing gcc features easier
check_gcc=$(shell \
if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \
then echo "$(1)"; else echo "$(2)"; fi)
check_as=$(shell \
if $(CC) -Wa,$(1) -Wa,-Z -c -o /dev/null -xassembler /dev/null > /dev/null 2>&1; \
then echo "-Wa,$(1)"; fi)
check_ld=$(shell \
if $(LD) $(1) -o /dev/null -b binary /dev/null > /dev/null 2>&1; \
then echo "$(1)"; fi)
ARFLAGS:=cr
OPTIMIZATION:=
# Use '-Os' optimization if available, else use -O2, allow Config to override
OPTIMIZATION+=$(call check_gcc,-Os,-O2)
# Use the gcc 3.4 -funit-at-a-time optimization when available
OPTIMIZATION+=$(call check_gcc,-funit-at-a-time,)
GCC_MAJOR_VER?=$(shell $(CC) -dumpversion | cut -d . -f 1)
#GCC_MINOR_VER?=$(shell $(CC) -dumpversion | cut -d . -f 2)
ifeq ($(GCC_MAJOR_VER),4)
# shrinks code, results are from 4.0.2
# 0.36%
OPTIMIZATION+=$(call check_gcc,-fno-tree-loop-optimize,)
# 0.34%
OPTIMIZATION+=$(call check_gcc,-fno-tree-dominator-opts,)
# 0.1%
OPTIMIZATION+=$(call check_gcc,-fno-strength-reduce,)
endif
CPU_CFLAGS-$(UCLIBC_FORMAT_SHARED_FLAT) += -mid-shared-library
CPU_CFLAGS-$(UCLIBC_FORMAT_FLAT_SEP_DATA) += -msep-data
PICFLAG-y := -fPIC
PICFLAG-$(UCLIBC_FORMAT_FDPIC_ELF) := -mfdpic
PICFLAG := $(PICFLAG-y)
PIEFLAG_NAME:=-fPIE
# Some nice CPU specific optimizations
ifeq ($(TARGET_ARCH),i386)
OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,)
OPTIMIZATION+=$(call check_gcc,-falign-jumps=0 -falign-loops=0,-malign-jumps=0 -malign-loops=0)
CPU_CFLAGS-$(CONFIG_386)+=-march=i386
CPU_CFLAGS-$(CONFIG_486)+=-march=i486
CPU_CFLAGS-$(CONFIG_ELAN)+=-march=i486
CPU_CFLAGS-$(CONFIG_586)+=-march=i586
CPU_CFLAGS-$(CONFIG_586MMX)+=$(call check_gcc,-march=pentium-mmx,-march=i586)
CPU_CFLAGS-$(CONFIG_686)+=-march=i686
CPU_CFLAGS-$(CONFIG_PENTIUMII)+=$(call check_gcc,-march=pentium2,-march=i686)
CPU_CFLAGS-$(CONFIG_PENTIUMIII)+=$(call check_gcc,-march=pentium3,-march=i686)
CPU_CFLAGS-$(CONFIG_PENTIUM4)+=$(call check_gcc,-march=pentium4,-march=i686)
CPU_CFLAGS-$(CONFIG_K6)+=$(call check_gcc,-march=k6,-march=i586)
CPU_CFLAGS-$(CONFIG_K7)+=$(call check_gcc,-march=athlon,-march=i686) $(call check_gcc,-falign-functions=4,-malign-functions=4)
CPU_CFLAGS-$(CONFIG_CRUSOE)+=-march=i686 $(call check_gcc,-falign-functions=0,-malign-functions=0)
CPU_CFLAGS-$(CONFIG_WINCHIPC6)+=$(call check_gcc,-march=winchip-c6,-march=i586)
CPU_CFLAGS-$(CONFIG_WINCHIP2)+=$(call check_gcc,-march=winchip2,-march=i586)
CPU_CFLAGS-$(CONFIG_CYRIXIII)+=$(call check_gcc,-march=c3,-march=i486) $(call check_gcc,-falign-functions=0,-malign-functions=0)
CPU_CFLAGS-$(CONFIG_NEHEMIAH)+=$(call check_gcc,-march=c3-2,-march=i686)
endif
ifeq ($(TARGET_ARCH),sparc)
CPU_CFLAGS-$(CONFIG_SPARC_V7)+=-mcpu=v7
CPU_CFLAGS-$(CONFIG_SPARC_V8)+=-mcpu=v8
CPU_CFLAGS-$(CONFIG_SPARC_V9)+=-mcpu=v9
CPU_CFLAGS-$(CONFIG_SPARC_V9B)+=$(call check_gcc,-mcpu=v9b,-mcpu=ultrasparc)
endif
ifeq ($(TARGET_ARCH),arm)
OPTIMIZATION+=-fstrict-aliasing
CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN)+=-EL
CPU_LDFLAGS-$(ARCH_BIG_ENDIAN)+=-EB
CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-mlittle-endian
CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mbig-endian
CPU_CFLAGS-$(CONFIG_GENERIC_ARM)+=
CPU_CFLAGS-$(CONFIG_ARM610)+=-mtune=arm610 -march=armv3
CPU_CFLAGS-$(CONFIG_ARM710)+=-mtune=arm710 -march=armv3
CPU_CFLAGS-$(CONFIG_ARM7TDMI)+=-mtune=arm7tdmi -march=armv4t
CPU_CFLAGS-$(CONFIG_ARM720T)+=-mtune=arm7tdmi -march=armv4t
CPU_CFLAGS-$(CONFIG_ARM920T)+=-mtune=arm9tdmi -march=armv4t
CPU_CFLAGS-$(CONFIG_ARM922T)+=-mtune=arm9tdmi -march=armv4t
CPU_CFLAGS-$(CONFIG_ARM926T)+=-mtune=arm9tdmi -march=armv5t
CPU_CFLAGS-$(CONFIG_ARM10T)+=-mtune=arm10tdmi -march=armv5t
CPU_CFLAGS-$(CONFIG_ARM1136JF_S)+=-mtune=arm1136jf-s -march=armv6
CPU_CFLAGS-$(CONFIG_ARM1176JZ_S)+=-mtune=arm1176jz-s -march=armv6
CPU_CFLAGS-$(CONFIG_ARM1176JZF_S)+=-mtune=arm1176jzf-s -march=armv6
CPU_CFLAGS-$(CONFIG_ARM_SA110)+=-mtune=strongarm110 -march=armv4
CPU_CFLAGS-$(CONFIG_ARM_SA1100)+=-mtune=strongarm1100 -march=armv4
CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=$(call check_gcc,-mtune=xscale,-mtune=strongarm110)
CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=-march=armv5te -Wa,-mcpu=xscale
CPU_CFLAGS-$(CONFIG_ARM_IWMMXT)+=-march=iwmmxt -Wa,-mcpu=iwmmxt -mabi=iwmmxt
endif
ifeq ($(TARGET_ARCH),mips)
CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN)+=-EL
CPU_LDFLAGS-$(ARCH_BIG_ENDIAN)+=-EB
CPU_CFLAGS-$(CONFIG_MIPS_ISA_1)+=-mips1
CPU_CFLAGS-$(CONFIG_MIPS_ISA_2)+=-mips2 -mtune=mips2
CPU_CFLAGS-$(CONFIG_MIPS_ISA_3)+=-mips3 -mtune=mips3
CPU_CFLAGS-$(CONFIG_MIPS_ISA_4)+=-mips4 -mtune=mips4
CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS32)+=-mips32 -mtune=mips32
CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS64)+=-mips64 -mtune=mips32
ifeq ($(strip $(ARCH_BIG_ENDIAN)),y)
CPU_LDFLAGS-$(CONFIG_MIPS_N64_ABI)+=-melf64btsmip
CPU_LDFLAGS-$(CONFIG_MIPS_O32_ABI)+=-melf32btsmip
endif
ifeq ($(strip $(ARCH_LITTLE_ENDIAN)),y)
CPU_LDFLAGS-$(CONFIG_MIPS_N64_ABI)+=-melf64ltsmip
CPU_LDFLAGS-$(CONFIG_MIPS_O32_ABI)+=-melf32ltsmip
endif
CPU_CFLAGS-$(CONFIG_MIPS_N64_ABI)+=-mabi=64
CPU_CFLAGS-$(CONFIG_MIPS_O32_ABI)+=-mabi=32
CPU_CFLAGS-$(CONFIG_MIPS_N32_ABI)+=-mabi=n32
endif
ifeq ($(TARGET_ARCH),nios)
CPU_LDFLAGS-y+=-m32
CPU_CFLAGS-y+=-m32
endif
ifeq ($(TARGET_ARCH),sh)
OPTIMIZATION+=-fstrict-aliasing
OPTIMIZATION+= $(call check_gcc,-mprefergot,)
CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN)+=-EL
CPU_LDFLAGS-$(ARCH_BIG_ENDIAN)+=-EB
CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-ml
CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mb
CPU_CFLAGS-$(CONFIG_SH2)+=-m2
CPU_CFLAGS-$(CONFIG_SH3)+=-m3
ifeq ($(UCLIBC_HAS_FLOATS),y)
CPU_CFLAGS-$(CONFIG_SH2A)+=-m2a
CPU_CFLAGS-$(CONFIG_SH4)+=-m4
else
CPU_CFLAGS-$(CONFIG_SH2A)+=-m2a-nofpu
CPU_CFLAGS-$(CONFIG_SH4)+=-m4-nofpu
endif
endif
ifeq ($(TARGET_ARCH),sh64)
OPTIMIZATION+=-fstrict-aliasing
CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN):=-EL
CPU_LDFLAGS-$(ARCH_BIG_ENDIAN):=-EB
CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN):=-ml
CPU_CFLAGS-$(ARCH_BIG_ENDIAN):=-mb
CPU_CFLAGS-$(CONFIG_SH5)+=-m5-32media
endif
ifeq ($(TARGET_ARCH),h8300)
CPU_LDFLAGS-$(CONFIG_H8300H)+= -ms8300h
CPU_LDFLAGS-$(CONFIG_H8S) += -ms8300s
CPU_CFLAGS-$(CONFIG_H8300H) += -mh -mint32
CPU_CFLAGS-$(CONFIG_H8S) += -ms -mint32
endif
ifeq ($(TARGET_ARCH),cris)
CPU_LDFLAGS-$(CONFIG_CRIS)+=-mcrislinux
CPU_LDFLAGS-$(CONFIG_CRISV32)+=-mcrislinux
CPU_CFLAGS-$(CONFIG_CRIS)+=-mlinux
PICFLAG:=-fpic
PIEFLAG_NAME:=-fpie
endif
ifeq ($(TARGET_ARCH),m68k)
# -fPIC is only supported for 68020 and above. It is not supported
# for 68000, 68010, or Coldfire.
PICFLAG:=-fpic
PIEFLAG_NAME:=-fpie
endif
ifeq ($(TARGET_ARCH),powerpc)
# PowerPC can hold 8192 entries in its GOT with -fpic which is more than
# enough. Therefore use -fpic which will reduce code size and generates
# faster code.
PICFLAG:=-fpic
PIEFLAG_NAME:=-fpie
PPC_HAS_REL16:=$(shell echo -e "\t.text\n\taddis 11,30,_GLOBAL_OFFSET_TABLE_-.@ha" | $(CC) -c -x assembler -o /dev/null - 2> /dev/null && echo -n y || echo -n n)
CPU_CFLAGS-$(PPC_HAS_REL16)+= -DHAVE_ASM_PPC_REL16
CPU_CFLAGS-$(CONFIG_E500) += "-D__NO_MATH_INLINES -D__NO_LONG_DOUBLE_MATH"
endif
ifeq ($(TARGET_ARCH),frv)
CPU_LDFLAGS-$(CONFIG_FRV)+=-melf32frvfd
# Using -pie causes the program to have an interpreter, which is
# forbidden, so we must make do with -shared. Unfortunately,
# -shared by itself would get us global function descriptors
# and calls through PLTs, dynamic resolution of symbols, etc,
# which would break as well, but -Bsymbolic comes to the rescue.
export LDPIEFLAG:=-shared -Bsymbolic
UCLIBC_LDSO=ld.so.1
endif
# Keep the check_gcc from being needlessly executed
ifndef PIEFLAG
ifneq ($(UCLIBC_BUILD_PIE),y)
export PIEFLAG:=
else
export PIEFLAG:=$(call check_gcc,$(PIEFLAG_NAME),$(PICFLAG))
endif
endif
# We need to keep track of both the CC PIE flag (above) as
# well as the LD PIE flag (below) because we can't rely on
# gcc passing -pie if we used -fPIE
ifndef LDPIEFLAG
ifneq ($(UCLIBC_BUILD_PIE),y)
export LDPIEFLAG:=
else
export LDPIEFLAG:=$(shell $(LD) --help 2>/dev/null | grep -q -- -pie && echo "-Wl,-pie")
endif
endif
# Check for AS_NEEDED support in linker script (binutils>=2.16.1 has it)
ifndef ASNEEDED
export ASNEEDED:=$(shell $(LD) --help 2>/dev/null | grep -q -- --as-needed && echo "AS_NEEDED ( $(UCLIBC_LDSO) )" || echo "$(UCLIBC_LDSO)")
endif
# Add a bunch of extra pedantic annoyingly strict checks
XWARNINGS=$(subst ",, $(strip $(WARNINGS))) -Wstrict-prototypes -fno-strict-aliasing
ifeq ($(EXTRA_WARNINGS),y)
XWARNINGS+=-Wnested-externs -Wshadow -Wmissing-noreturn -Wmissing-format-attribute -Wformat=2
XWARNINGS+=-Wmissing-prototypes -Wmissing-declarations
XWARNINGS+=-Wnonnull -Wundef
# works only w/ gcc-3.4 and up, can't be checked for gcc-3.x w/ check_gcc()
#XWARNINGS+=-Wdeclaration-after-statement
endif
XARCH_CFLAGS=$(subst ",, $(strip $(ARCH_CFLAGS)))
CPU_CFLAGS=$(subst ",, $(strip $(CPU_CFLAGS-y)))
SSP_DISABLE_FLAGS ?= $(call check_gcc,-fno-stack-protector,)
ifeq ($(UCLIBC_BUILD_SSP),y)
SSP_CFLAGS := $(call check_gcc,-fno-stack-protector-all,)
SSP_CFLAGS += $(call check_gcc,-fstack-protector,)
SSP_ALL_CFLAGS ?= $(call check_gcc,-fstack-protector-all,)
else
SSP_CFLAGS := $(SSP_DISABLE_FLAGS)
endif
# Some nice CFLAGS to work with
CFLAGS := -include $(top_builddir)include/libc-symbols.h \
$(XWARNINGS) $(CPU_CFLAGS) $(SSP_CFLAGS) \
-fno-builtin -nostdinc -I$(top_builddir)include -I.
ifneq ($(strip $(UCLIBC_EXTRA_CFLAGS)),"")
CFLAGS += $(subst ",, $(UCLIBC_EXTRA_CFLAGS))
endif
LDADD_LIBFLOAT=
ifeq ($(UCLIBC_HAS_SOFT_FLOAT),y)
# If -msoft-float isn't supported, we want an error anyway.
# Hmm... might need to revisit this for arm since it has 2 different
# soft float encodings.
ifneq ($(TARGET_ARCH),nios)
ifneq ($(TARGET_ARCH),nios2)
CFLAGS += -msoft-float
endif
endif
ifeq ($(TARGET_ARCH),arm)
# No longer needed with current toolchains, but leave it here for now.
# If anyone is actually still using gcc 2.95 (say), they can uncomment it.
# LDADD_LIBFLOAT=-lfloat
endif
endif
# We need this to be checked within libc-symbols.h
ifneq ($(HAVE_SHARED),y)
CFLAGS += -DSTATIC
endif
CFLAGS += $(call check_gcc,-std=gnu99,)
CFLAGS += $(call check_gcc,-fgnu89-inline,)
LDFLAGS_NOSTRIP:=$(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc
# binutils-2.16.1 warns about ignored sections, 2.16.91.0.3 and newer are ok
#LDFLAGS_NOSTRIP+=$(call check_ld,--gc-sections)
ifeq ($(UCLIBC_BUILD_RELRO),y)
LDFLAGS_NOSTRIP+=-z relro
endif
ifeq ($(UCLIBC_BUILD_NOW),y)
LDFLAGS_NOSTRIP+=-z now
endif
LDFLAGS:=$(LDFLAGS_NOSTRIP) -z defs
ifeq ($(DODEBUG),y)
#CFLAGS += -g3
CFLAGS += -O0 -g3
else
CFLAGS += $(OPTIMIZATION) $(XARCH_CFLAGS)
endif
ifeq ($(DOSTRIP),y)
LDFLAGS += -s
else
STRIPTOOL := true -Stripping_disabled
endif
ifeq ($(DOMULTI),y)
# we try to compile all sources at once into an object (IMA), but
# gcc-3.3.x does not support it
# gcc-3.4.x supports it, but does not need and support --combine. though fails on many sources
# gcc-4.0.x supports it, supports the --combine flag, but does not need it
# gcc-4.1(200506xx) supports it, but needs the --combine flag, else libs are useless
ifeq ($(GCC_MAJOR_VER),3)
DOMULTI:=n
else
CFLAGS+=$(call check_gcc,--combine,)
endif
else
DOMULTI:=n
endif
ifneq ($(strip $(UCLIBC_EXTRA_LDFLAGS)),"")
LDFLAGS += $(subst ",, $(UCLIBC_EXTRA_LDFLAGS))
endif
ifeq ($(UCLIBC_HAS_THREADS),y)
ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y)
PTNAME := nptl
else
ifeq ($(LINUXTHREADS_OLD),y)
PTNAME := linuxthreads.old
else
PTNAME := linuxthreads
endif
endif
PTDIR := $(top_builddir)libpthread/$(PTNAME)
# set up system dependencies include dirs (NOTE: order matters!)
ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y)
PTINC:= -I$(PTDIR) \
-I$(PTDIR)/sysdeps/unix/sysv/linux/$(TARGET_ARCH) \
-I$(PTDIR)/sysdeps/$(TARGET_ARCH) \
-I$(PTDIR)/sysdeps/unix/sysv/linux \
-I$(PTDIR)/sysdeps/pthread \
-I$(PTDIR)/sysdeps/pthread/bits \
-I$(PTDIR)/sysdeps/generic \
-I$(top_srcdir)ldso/ldso/$(TARGET_ARCH) \
-I$(top_srcdir)ldso/include
#
# Test for TLS if NPTL support was selected.
#
GCC_HAS_TLS=$(shell \
echo "extern __thread int foo;" | $(CC) -o /dev/null -S -xc - 2>&1)
ifneq ($(GCC_HAS_TLS),)
gcc_tls_test_fail:
@echo "####";
@echo "#### Your compiler does not support TLS and you are trying to build uClibc";
@echo "#### with NPTL support. Upgrade your binutils and gcc to versions which";
@echo "#### support TLS for your architecture. Do not contact uClibc maintainers";
@echo "#### about this problem.";
@echo "####";
@echo "#### Exiting...";
@echo "####";
@exit 1;
endif
else
PTINC := \
-I$(PTDIR)/sysdeps/unix/sysv/linux/$(TARGET_ARCH) \
-I$(PTDIR)/sysdeps/$(TARGET_ARCH) \
-I$(PTDIR)/sysdeps/unix/sysv/linux \
-I$(PTDIR)/sysdeps/pthread \
-I$(PTDIR) \
-I$(top_builddir)libpthread
endif
CFLAGS+=$(PTINC)
else
PTNAME :=
PTINC :=
endif
CFLAGS += -I$(KERNEL_HEADERS) -I/usr/include
# Sigh, some stupid versions of gcc can't seem to cope with '-iwithprefix include'
#CFLAGS+=-iwithprefix include
CFLAGS+=-isystem $(shell $(CC) -print-file-name=include)
ifneq ($(DOASSERTS),y)
CFLAGS+=-DNDEBUG
endif
# Keep the check_as from being needlessly executed
ifndef ASFLAGS_NOEXEC
ifeq ($(UCLIBC_BUILD_NOEXECSTACK),y)
export ASFLAGS_NOEXEC := $(call check_as,--noexecstack)
else
export ASFLAGS_NOEXEC :=
endif
endif
ASFLAGS = $(ASFLAGS_NOEXEC)
LIBGCC_CFLAGS ?= $(CFLAGS) $(CPU_CFLAGS-y)
LIBGCC:=$(shell $(CC) $(LIBGCC_CFLAGS) -print-libgcc-file-name)
LIBGCC_DIR:=$(dir $(LIBGCC))
# moved from libpthread/linuxthreads
ifeq ($(UCLIBC_CTOR_DTOR),y)
SHARED_START_FILES:=$(top_builddir)lib/crti.o $(LIBGCC_DIR)crtbeginS.o
SHARED_END_FILES:=$(LIBGCC_DIR)crtendS.o $(top_builddir)lib/crtn.o
endif