# 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.
-
-
-#--------------------------------------------------------
-# 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
+#-----------------------------------------------------------
+# 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-
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
+RANLIB = $(CROSS)ranlib
+STRIPTOOL = $(CROSS)strip
-INSTALL= install
-LN= ln
-RM= rm -f
+INSTALL = install
+LN = ln
+RM = rm -f
# Select the compiler needed to build binaries for your development system
-HOSTCC=gcc
-HOSTCFLAGS=-O2 -Wall
-
-
-#--------------------------------------------------------
-# Nothing beyond this point should ever be touched by mere mortals.
-# Unless you hang out with the gods, you should probably leave all
-# this stuff alone.
-MAJOR_VERSION:=0
-MINOR_VERSION:=9
-SUBLEVEL:=26
-VERSION:=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
+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 := 28
+VERSION := $(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
# Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
-LC_ALL:= C
+LC_ALL := C
export MAJOR_VERSION MINOR_VERSION SUBLEVEL VERSION LC_ALL
SHARED_FULLNAME:=libuClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
LIBNAME:=libc.a
LIBC:=$(TOPDIR)libc/$(LIBNAME)
+# Make sure DESTDIR and PREFIX can be used to install
+# PREFIX is a uClibcism while DESTDIR is a common GNUism
+ifndef PREFIX
+PREFIX = $(DESTDIR)
+endif
+
# Pull in the user's uClibc configuration
ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
-include $(TOPDIR).config
endif
+ifndef CROSS
+CROSS=$(subst ",, $(strip $(CROSS_COMPILER_PREFIX)))
+endif
+
# A nifty macro to make testing gcc features easier
-check_gcc=$(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \
+check_gcc=$(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,$(1)"; fi)
+
+# Setup some shortcuts so that silent mode is silent like it should be
+ifeq ($(subst s,,$(MAKEFLAGS)),$(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
# Make certain these contain a final "/", but no "//"s.
-TARGET_ARCH:=$(strip $(subst ",, $(strip $(TARGET_ARCH))))
+TARGET_ARCH:=$(shell grep -s ^TARGET_ARCH $(TOPDIR)/.config | sed -e 's/^TARGET_ARCH=//' -e 's/"//g')
RUNTIME_PREFIX:=$(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 $(KERNEL_SOURCE))))))
+export RUNTIME_PREFIX DEVEL_PREFIX KERNEL_SOURCE
-ARFLAGS:=r
+ARFLAGS:=cr
OPTIMIZATION:=
PICFLAG:=-fPIC
-
-PIEFLAG:=$(call check_gcc,-fPIE,)
-ifeq ($(strip $(PIEFLAG)),-fPIE)
-LDPIEFLAG:=$(shell $(LD) --help | grep -q pie && echo "-Wl,-pie")
-endif
+PIEFLAG_NAME:=-fPIE
# Some nice CPU specific optimizations
ifeq ($(strip $(TARGET_ARCH)),i386)
CPU_CFLAGS-$(CONFIG_NEHEMIAH)+=$(call check_gcc,-march=c3-2,-march=i686)
endif
+ifeq ($(strip $(TARGET_ARCH)),sparc)
+ CPU_CFLAGS-$(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 ($(strip $(TARGET_ARCH)),arm)
OPTIMIZATION+=-fstrict-aliasing
CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN)+=-EL
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-$(ARCH_BIG_ENDIAN)+=-mb
CPU_CFLAGS-$(CONFIG_SH2)+=-m2
CPU_CFLAGS-$(CONFIG_SH3)+=-m3
+ifeq ($(strip $(UCLIBC_HAS_FLOATS)),y)
+ CPU_CFLAGS-$(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 $(TARGET_ARCH)),sh64)
CPU_LDFLAGS-$(CONFIG_CRIS)+=-mcrislinux
CPU_CFLAGS-$(CONFIG_CRIS)+=-mlinux
PICFLAG:=-fpic
- PIEFLAG:=$(call check_gcc,-fpie,)
+ PIEFLAG_NAME:=-fpie
endif
ifeq ($(strip $(TARGET_ARCH)),powerpc)
# enough. Therefore use -fpic which will reduce code size and generates
# faster code.
PICFLAG:=-fpic
- PIEFLAG:=$(call check_gcc,-fpie,)
+ PIEFLAG_NAME:=-fpie
endif
ifeq ($(strip $(TARGET_ARCH)),frv)
CPU_LDFLAGS-$(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 $(LD) --help | grep -q pie && echo "-Wl,-pie")
+endif
+endif
+
# Use '-Os' optimization if available, else use -O2, allow Config to override
OPTIMIZATION+=$(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 $(WARNINGS))) -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing
XARCH_CFLAGS=$(subst ",, $(strip $(ARCH_CFLAGS)))
endif
endif
-ifneq ($(UCLIBC_BUILD_PIE),y)
-PIEFLAG=
-LDPIEFLAG=
-endif
-
-SSP_DISABLE_FLAGS=$(call check_gcc,-fno-stack-protector,)
+SSP_DISABLE_FLAGS:=$(call check_gcc,-fno-stack-protector,)
ifeq ($(UCLIBC_BUILD_SSP),y)
-SSP_CFLAGS=$(call check_gcc,-fno-stack-protector-all,)
+SSP_CFLAGS:=$(call check_gcc,-fno-stack-protector-all,)
SSP_CFLAGS+=$(call check_gcc,-fstack-protector,)
-SSP_ALL_CFLAGS=$(call check_gcc,-fstack-protector-all,)
+SSP_ALL_CFLAGS:=$(call check_gcc,-fstack-protector-all,)
else
-SSP_CFLAGS=$(SSP_DISABLE_FLAGS)
+SSP_CFLAGS:=$(SSP_DISABLE_FLAGS)
endif
# Some nice CFLAGS to work with
-CFLAGS=$(XWARNINGS) $(OPTIMIZATION) $(XARCH_CFLAGS) $(CPU_CFLAGS) $(SSP_CFLAGS) \
+CFLAGS:=$(XWARNINGS) $(CPU_CFLAGS) $(SSP_CFLAGS) \
-fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I.
+LDFLAGS_NOSTRIP:=$(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc -z defs
ifeq ($(DODEBUG),y)
#CFLAGS += -g3
- CFLAGS = $(XWARNINGS) -O0 -g3 $(CPU_CFLAGS) $(SSP_CFLAGS) \
- -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I.
- LDFLAGS:= $(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc
+ CFLAGS += -O0 -g3
+ LDFLAGS := $(LDFLAGS_NOSTRIP)
STRIPTOOL:= true -Since_we_are_debugging
else
- LDFLAGS := $(CPU_LDFLAGS-y) -s -shared --warn-common --warn-once -z combreloc
+ CFLAGS += $(OPTIMIZATION) $(XARCH_CFLAGS)
+ LDFLAGS := $(LDFLAGS_NOSTRIP) -s
endif
ifeq ($(UCLIBC_BUILD_RELRO),y)
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 $(SYSTEM_LDSO))))
- endif
-endif
-
CFLAGS_NOPIC:=$(CFLAGS)
ifeq ($(DOPIC),y)
CFLAGS += $(PICFLAG)
endif
+# Keep the check_as from being needlessly executed
ASFLAGS = $(CFLAGS)
+ifndef ASFLAGS_NOEXEC
ifeq ($(UCLIBC_BUILD_NOEXECSTACK),y)
-check_as_noexecstack=$(shell if $(LD) --help | grep -q "z noexecstack"; then echo "-Wa,--noexecstack"; fi)
-ASFLAGS += $(check_as_noexecstack)
+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) $(LIBGCC_CFLAGS) -print-libgcc-file-name)
endif
TARGET_ARCH:=$(strip $(subst ",, $(strip $(TARGET_ARCH))))
-
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