# Rules.make for uClibc
#
# Copyright (C) 2000 by Lineo, inc.
-# Copyright (C) 2000-2002 Erik Andersen <andersen@uclibc.org>
+# Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
#
-# This program is free software; you can redistribute it and/or modify it under
-# the terms of the GNU Library General Public License as published by the Free
-# Software Foundation; either version 2 of the License, or (at your option) any
-# later version.
+# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
#
-# This program is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-# FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
-# details.
-#
-# You should have received a copy of the GNU Library General Public License
-# along with this program; if not, write to the Free Software Foundation, Inc.,
-# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-#--------------------------------------------------------
-# 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.
+#-----------------------------------------------------------
+# 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
+#-----------------------------------------------------------
+# 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-
ifndef CROSS
CROSS=
endif
-CC= $(CROSS)gcc
-AR= $(CROSS)ar
-LD= $(CROSS)ld
-NM= $(CROSS)nm
-STRIPTOOL= $(CROSS)strip
+CC = $(CROSS)gcc
+AR = $(CROSS)ar
+LD = $(CROSS)ld
+NM = $(CROSS)nm
+STRIPTOOL = $(CROSS)strip
+
+INSTALL = install
+LN = ln
+RM = rm -f
+TAR = tar
-INSTALL= install
-LN= ln
-RM= rm -f
+STRIP_FLAGS ?= -x -R .note -R .comment
# Select the compiler needed to build binaries for your development system
-HOSTCC=gcc
-HOSTCFLAGS=-O2 -Wall
-
-
-#--------------------------------------------------------
-# Nothing beyond this point should ever be touched by mere mortals.
-# Unless you hang out with the gods, you should probably leave all
-# this stuff alone.
-MAJOR_VERSION:=0
-MINOR_VERSION:=9
-SUBLEVEL:=26
-VERSION:=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
-# Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
-LC_ALL:= C
-export MAJOR_VERSION MINOR_VERSION SUBLEVEL VERSION LC_ALL
+HOSTCC = gcc
+BUILD_CFLAGS = -O2 -Wall
+
-SHARED_FULLNAME:=libuClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
-SHARED_MAJORNAME:=libc.so.$(MAJOR_VERSION)
-UCLIBC_LDSO:=ld-uClibc.so.$(MAJOR_VERSION)
-LIBNAME:=libc.a
-LIBC:=$(TOPDIR)libc/$(LIBNAME)
+#---------------------------------------------------------
+# Nothing beyond this point should ever be touched by mere
+# mortals. Unless you hang out with the gods, you should
+# probably leave all this stuff alone.
# Pull in the user's uClibc configuration
ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
--include $(TOPDIR).config
+-include $(top_builddir).config
endif
-# A nifty macro to make testing gcc features easier
-check_gcc=$(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \
- then echo "$(1)"; else echo "$(2)"; fi)
-
# Make certain these contain a final "/", but no "//"s.
+TARGET_ARCH:=$(shell grep -s '^TARGET_ARCH' $(top_builddir)/.config | sed -e 's/^TARGET_ARCH=//' -e 's/"//g')
TARGET_ARCH:=$(strip $(subst ",, $(strip $(TARGET_ARCH))))
RUNTIME_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(RUNTIME_PREFIX))))))
DEVEL_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(DEVEL_PREFIX))))))
-export RUNTIME_PREFIX DEVEL_PREFIX
+KERNEL_SOURCE:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(KERNEL_SOURCE))))))
+export RUNTIME_PREFIX DEVEL_PREFIX KERNEL_SOURCE
+
+
+# Now config hard core
+MAJOR_VERSION := 0
+MINOR_VERSION := 9
+SUBLEVEL := 28
+VERSION := $(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
+# 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)
+UCLIBC_LDSO_NAME := ld-uClibc
+ifeq ($(TARGET_ARCH),x86_64)
+UCLIBC_LDSO_NAME := ld64-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 := $(top_builddir)include/bits/sysnum.h
+
+#LIBS :=$(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,$(1)"; fi)
+
+# Setup some shortcuts so that silent mode is silent like it should be
+ifeq ($(findstring s,$(MAKEFLAGS)),)
+export MAKE_IS_SILENT=n
+SECHO=@echo
+SHELL_SET_X=set -x
+else
+export MAKE_IS_SILENT=y
+SECHO=-@false
+SHELL_SET_X=set +x
+endif
-ARFLAGS:=r
+ARFLAGS:=cr
OPTIMIZATION:=
PICFLAG:=-fPIC
-PIEFLAG:=$(call check_gcc,-fPIE,)
-ifeq ($(strip $(PIEFLAG)),-fPIE)
-# should add check if ld supports -pie
-LDPIEFLAG:=-Wl,-pie
-endif
+PIEFLAG_NAME:=-fPIE
# Some nice CPU specific optimizations
-ifeq ($(strip $(TARGET_ARCH)),i386)
+ifeq ($(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_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)+=$(call check_gcc,-march=athlon,-malign-functions=4 -march=i686)
- CPU_CFLAGS-$(CONFIG_CRUSOE)+=-march=i686 -malign-functions=0 -malign-jumps=0 -malign-loops=0
+ 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)+=$(call check_gcc,-march=c3,-march=i486) -malign-functions=0 -malign-jumps=0 -malign-loops=0
+ CPU_CFLAGS-$(CONFIG_CYRIXIII)+=$(call check_gcc,-march=c3,-march=i486) $(call check_gcc,-falign-functions=0,-malign-functions=0)
CPU_CFLAGS-$(CONFIG_NEHEMIAH)+=$(call check_gcc,-march=c3-2,-march=i686)
endif
-ifeq ($(strip $(TARGET_ARCH)),arm)
+ifeq ($(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-$(CONFIG_GENERIC_ARM)+=
CPU_CFLAGS-$(CONFIG_ARM610)+=-mtune=arm610 -march=armv3
CPU_CFLAGS-$(CONFIG_ARM710)+=-mtune=arm710 -march=armv3
+ CPU_CFLAGS-$(CONFIG_ARM7TDMI)+=-mtune=arm7tdmi -march=armv4
CPU_CFLAGS-$(CONFIG_ARM720T)+=-mtune=arm7tdmi -march=armv4
CPU_CFLAGS-$(CONFIG_ARM920T)+=-mtune=arm9tdmi -march=armv4
CPU_CFLAGS-$(CONFIG_ARM922T)+=-mtune=arm9tdmi -march=armv4
- CPU_CFLAGS-$(CONFIG_ARM926T)+=-mtune=arm9tdmi -march=armv4
+ CPU_CFLAGS-$(CONFIG_ARM926T)+=-mtune=arm9tdmi -march=armv5
+ CPU_CFLAGS-$(CONFIG_ARM1136JF_S)+=-mtune=arm1136jf-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-$(CONFIG_ARM_XSCALE)+=-march=armv4 -Wa,-mcpu=xscale
endif
-ifeq ($(strip $(TARGET_ARCH)),mips)
+ifeq ($(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_MIPS64)+=-mips64 -mtune=mips32
endif
-ifeq ($(strip $(TARGET_ARCH)),sh)
+ifeq ($(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_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 ($(strip $(TARGET_ARCH)),sh64)
+ifeq ($(TARGET_ARCH),sh64)
OPTIMIZATION+=-fstrict-aliasing
CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN):=-EL
CPU_LDFLAGS-$(ARCH_BIG_ENDIAN):=-EB
CPU_CFLAGS-$(CONFIG_SH5)+=-m5-32media
endif
-ifeq ($(strip $(TARGET_ARCH)),h8300)
+ifeq ($(TARGET_ARCH),h8300)
CPU_LDFLAGS-$(CONFIG_H8300H)+= -ms8300h
CPU_LDFLAGS-$(CONFIG_H8S) += -ms8300s
- CPU_CFLAGS-$(CONFIG_H8300H) += -mh -mint32 -fsigned-char
- CPU_CFLAGS-$(CONFIG_H8S) += -ms -mint32 -fsigned-char
+ CPU_CFLAGS-$(CONFIG_H8300H) += -mh -mint32
+ CPU_CFLAGS-$(CONFIG_H8S) += -ms -mint32
endif
-ifeq ($(strip $(TARGET_ARCH)),cris)
+ifeq ($(TARGET_ARCH),cris)
CPU_LDFLAGS-$(CONFIG_CRIS)+=-mcrislinux
CPU_CFLAGS-$(CONFIG_CRIS)+=-mlinux
PICFLAG:=-fpic
- PIEFLAG:=$(call check_gcc,-fpie,)
+ PIEFLAG_NAME:=-fpie
endif
-ifeq ($(strip $(TARGET_ARCH)),powerpc)
+ifeq ($(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:=$(call check_gcc,-fpie,)
+ PIEFLAG_NAME:=-fpie
+endif
+
+ifeq ($(TARGET_ARCH),bfin)
+ # This should also work, but why bother ? ;)
+ #PICFLAG:=-fPIC -mid-shared-library
+ PICFLAG:=-fpic
endif
-ifeq ($(strip $(TARGET_ARCH)),frv)
+ifeq ($(TARGET_ARCH),frv)
CPU_LDFLAGS-$(CONFIG_FRV)+=-melf32frvfd
CPU_CFLAGS-$(CONFIG_FRV)+=-mfdpic
- PICFLAG=-fPIC -DPIC
# 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.
- LDPIEFLAG=-shared -Bsymbolic
+ 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 $(LD) --help | grep -q pie && echo "-Wl,-pie")
+endif
+endif
+
+# Check for AS_NEEDED support in linker script (binutils>=2.16.1 has it)
+ifndef ASNEEDED
+ifneq ($(UCLIBC_HAS_SSP),y)
+export ASNEEDED:=
+else
+export ASNEEDED:=$(shell (LD_TMP=$(mktemp LD_XXXXXX) ; echo "GROUP ( AS_NEEDED ( /usr/lib/libc.so ) )" > $LD_TMP && if $(LD) -T $LD_TMP -o /dev/null > /dev/null 2>&1; then echo "AS_NEEDED ( $(UCLIBC_LDSO) )"; else echo "$(UCLIBC_LDSO)"; fi; rm -f $LD_TMP ) )
+endif
+endif
+
# Use '-Os' optimization if available, else use -O2, allow Config to override
OPTIMIZATION+=$(call check_gcc,-Os,-O2)
# Use the gcc 3.4 -funit-at-a-time optimization when available
OPTIMIZATION+=$(call check_gcc,-funit-at-a-time,)
-
# Add a bunch of extra pedantic annoyingly strict checks
XWARNINGS=$(subst ",, $(strip $(WARNINGS))) -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing
+ifeq ($(EXTRA_WARNINGS),y)
+XWARNINGS+=-Wnested-externs -Wshadow -Wmissing-noreturn -Wmissing-format-attribute -Wformat=2
+XWARNINGS+=-Wmissing-prototypes -Wmissing-declarations
+# 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.
+
LDADD_LIBFLOAT=
-ifeq ($(strip $(UCLIBC_HAS_SOFT_FLOAT)),y)
-# Add -msoft-float to the CPU_FLAGS since ldso and libdl ignore CFLAGS.
+ifeq ($(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.
- CPU_CFLAGS += -msoft-float
-ifeq ($(strip $(TARGET_ARCH)),arm)
+ifneq ($(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
-ifneq ($(UCLIBC_PIE_SUPPORT),y)
-PIEFLAG=
-LDPIEFLAG=
+# Make sure "char" behavior is the same everywhere
+CFLAGS += -fsigned-char
+
+# We need this to be checked within libc-symbols.h
+ifneq ($(HAVE_SHARED),y)
+CFLAGS += -DSTATIC
endif
-ifeq ($(SSP_CFLAGS),)
-SSP_CFLAGS=$(call check_gcc,-fno-stack-protector-all,)
-SSP_CFLAGS+=$(call check_gcc,-fstack-protector,)
+# only i386 is known to work if compile.S gets -D__ASSEMBLER__
+#CFLAGS += $(call check_gcc,-std=c99,)
+
+LDFLAGS_NOSTRIP:=$(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc
+
+ifeq ($(UCLIBC_BUILD_RELRO),y)
+LDFLAGS_NOSTRIP+=-z relro
endif
-# Some nice CFLAGS to work with
-CFLAGS=$(XWARNINGS) $(OPTIMIZATION) $(XARCH_CFLAGS) $(CPU_CFLAGS) $(SSP_CFLAGS) \
- -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I.
+ifeq ($(UCLIBC_BUILD_NOW),y)
+LDFLAGS_NOSTRIP+=-z now
+endif
+LDFLAGS:=$(LDFLAGS_NOSTRIP) -z defs
ifeq ($(DODEBUG),y)
#CFLAGS += -g3
- CFLAGS = $(XWARNINGS) -O0 -g3 $(CPU_CFLAGS) -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I.
- LDFLAGS:= $(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc
+ CFLAGS += -O0 -g3
STRIPTOOL:= true -Since_we_are_debugging
else
- LDFLAGS := $(CPU_LDFLAGS-y) -s -shared --warn-common --warn-once -z combreloc
+ CFLAGS += $(OPTIMIZATION) $(XARCH_CFLAGS)
+ LDFLAGS += -s
+endif
+
+ifeq ($(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
+GCC_VER?=$(shell $(CC) -dumpversion | cut -d . -f 1)
+ifeq ($(GCC_VER),3)
+DOMULTI:=n
+else
+CFLAGS+=$(call check_gcc,--combine,)
+endif
+else
+DOMULTI:=n
+endif
+
+ifeq ($(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$(PTDIR)/compat \
+ -I$(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 \
+ -include $(PTDIR)/compat/libc-symbols.h
+#
+# Test for TLS if NPTL support was selected.
+#
+GCC_HAS_TLS=$(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
# Sigh, some stupid versions of gcc can't seem to cope with '-iwithprefix include'
CFLAGS+=-isystem $(shell $(CC) -print-file-name=include)
ifneq ($(DOASSERTS),y)
- CFLAGS += -DNDEBUG
+CFLAGS+=-DNDEBUG
endif
-ifeq ($(HAVE_SHARED),y)
- ifeq ($(BUILD_UCLIBC_LDSO),y)
- LDSO:=$(TOPDIR)lib/$(UCLIBC_LDSO)
- DYNAMIC_LINKER:=$(SHARED_LIB_LOADER_PREFIX)/$(UCLIBC_LDSO)
- else
- LDSO:=$(SYSTEM_LDSO)
- DYNAMIC_LINKER:=/lib/$(strip $(subst ",, $(notdir $(SYSTEM_LDSO))))
- endif
+# moved from ldso/{ldso,libdl}
+# BEWARE!!! At least mips* will die if -O0 is used!!!
+ifeq ($(TARGET_ARCH),mips)
+CFLAGS:=$(CFLAGS:-O0=-O1)
endif
-CFLAGS_NOPIC:=$(CFLAGS)
-ifeq ($(DOPIC),y)
- CFLAGS += $(PICFLAG)
+# Keep the check_as from being needlessly executed
+ifndef ASFLAGS_NOEXEC
+ifeq ($(UCLIBC_BUILD_NOEXECSTACK),y)
+export ASFLAGS_NOEXEC := $(call check_as,--noexecstack)
+else
+export ASFLAGS_NOEXEC :=
endif
-
-ASFLAGS = $(CFLAGS)
+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 $(top_builddir)lib/crtn.o
+endif
+
########################################
#
# uClinux shared lib support
export LIBID FLTFLAGS
SHARED_TARGET = lib/libc
endif
-
-TARGET_ARCH:=$(strip $(subst ",, $(strip $(TARGET_ARCH))))
-