# Rules.make for uClibc # # Copyright (C) 2000 by Lineo, inc. # Copyright (C) 2000-2002 Erik Andersen # # 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. # # 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. #-------------------------------------------------------- # 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=mipsel-linux- # will build uClibc for 'mipsel'. ifndef CROSS CROSS= endif CC= $(CROSS)gcc AR= $(CROSS)ar LD= $(CROSS)ld NM= $(CROSS)nm STRIPTOOL= $(CROSS)strip # Select the compiler needed to build binaries for your development system HOSTCC=gcc HOSTCFLAGS=-O2 -Wall #-------------------------------------------------------- # Nothing beyond this point should ever be touched by mere mortals. # Unless you hang out with the gods, you should probably leave all # this stuff alone. MAJOR_VERSION:=0 MINOR_VERSION:=9 SUBLEVEL:=20 VERSION:=$(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 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/$(LIBNAME) # Pull in the user's uClibc configuration ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),) -include $(TOPDIR).config endif # A nifty macro to make testing gcc features easier check_gcc=$(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \ then echo "$(1)"; else echo "$(2)"; fi) # check if we have nawk, otherwise user awk AWK:=$(shell if [ -x /usr/bin/nawk ]; then echo "/usr/bin/nawk"; \ else echo "/usr/bin/awk"; fi) HOST_ARCH:= $(shell uname -m | sed \ -e 's/i.86/i386/' \ -e 's/sparc.*/sparc/' \ -e 's/arm.*/arm/g' \ -e 's/m68k.*/m68k/' \ -e 's/ppc/powerpc/g' \ -e 's/v850.*/v850/g' \ -e 's/sh[234].*/sh/' \ -e 's/mips.*/mips/' \ ) ifeq ($(strip $(TARGET_ARCH)),) TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \ -e 's/i.86/i386/' \ -e 's/sparc.*/sparc/' \ -e 's/arm.*/arm/g' \ -e 's/m68k.*/m68k/' \ -e 's/ppc/powerpc/g' \ -e 's/v850.*/v850/g' \ -e 's/sh[234]/sh/' \ -e 's/mips-.*/mips/' \ -e 's/mipsel-.*/mipsel/' \ -e 's/cris.*/cris/' \ ) endif export TARGET_ARCH ARFLAGS:=r OPTIMIZATION:= # Some nice CPU specific optimizations ifeq ($(strip $(TARGET_ARCH)),i386) OPTIMIZATION+=$(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_586):="-march=i586" CPU_CFLAGS-$(CONFIG_586MMX):="$(call check_gcc,-march=pentium-mmx,-march=i586)" CPU_CFLAGS-$(CONFIG_686):="-march=i686" CPU_CFLAGS-$(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):="$(call check_gcc,-march=athlon,-malign-functions=4 -march=i686)" CPU_CFLAGS-$(CONFIG_CRUSOE):="-march=i686 -malign-functions=0 -malign-jumps=0 -malign-loops=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=i586)" endif ifeq ($(strip $(TARGET_ARCH)),arm) OPTIMIZATION+=-fstrict-aliasing CPU_CFLAGS-$(CONFIG_GENERIC_ARM):= CPU_CFLAGS-$(CONFIG_ARM7TDMI):="-march=arm7tdmi" CPU_CFLAGS-$(CONFIG_STRONGARM):="-march=strongarm" CPU_CFLAGS-$(CONFIG_XSCALE):="-march=xscale" endif ifeq ($(strip $(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-$(CONFIG_SH3)+="-m3" CPU_CFLAGS-$(CONFIG_SH4)+="-m4" CPU_CFLAGS-$(CONFIG_SH5)+="-m5" endif ifeq ($(strip $(TARGET_ARCH)),h8300) CPU_LDFLAGS-$(CONFIG_H8300H):= -ms8300h CPU_LDFLAGS-$(CONFIG_H8S) := -ms8300s CPU_CFLAGS-$(CONFIG_H8300H) += -mh -mint32 -fsigned-char CPU_CFLAGS-$(CONFIG_H8S) += -ms -mint32 -fsigned-char endif ifeq ($(strip $(TARGET_ARCH)),cris) CPU_LDFLAGS-$(CONFIG_CRIS):="-mcrislinux" CPU_CFLAGS-$(CONFIG_CRIS):="-mlinux" endif # use '-Os' optimization if available, else use -O2, allow Config to override OPTIMIZATION+=$(call check_gcc,-Os,-O2) # Add a bunch of extra pedantic annoyingly strict checks XWARNINGS=$(subst ",, $(strip $(WARNINGS))) -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing XARCH_CFLAGS=$(subst ",, $(strip $(ARCH_CFLAGS))) CPU_CFLAGS=$(subst ",, $(strip $(CPU_CFLAGS-y))) # Some nice CFLAGS to work with CFLAGS:=$(XWARNINGS) $(OPTIMIZATION) $(XARCH_CFLAGS) $(CPU_CFLAGS) \ -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I. ifeq ($(DODEBUG),y) CFLAGS += -g LDFLAGS:= $(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc STRIPTOOL:= true -Since_we_are_debugging else LDFLAGS := $(CPU_LDFLAGS-y) -s -shared --warn-common --warn-once -z combreloc endif # Sigh, some stupid versions of gcc can't seem to cope with '-iwithprefix include' #CFLAGS+=-iwithprefix include CFLAGS+=$(shell $(CC) -print-search-dirs | sed -ne "s/install: *\(.*\)/-I\1include/gp") ifneq ($(DOASSERTS),y) CFLAGS += -DNDEBUG endif ifeq ($(HAVE_SHARED),y) LIBRARY_CACHE:=#-DUSE_CACHE ifeq ($(BUILD_UCLIBC_LDSO),y) LDSO:=$(TOPDIR)lib/$(UCLIBC_LDSO) DYNAMIC_LINKER:=$(SHARED_LIB_LOADER_PATH)/$(UCLIBC_LDSO) BUILD_DYNAMIC_LINKER:=$(shell cd $(TOPDIR) && pwd)/lib/$(UCLIBC_LDSO) else LDSO:=$(SYSTEM_LDSO) DYNAMIC_LINKER:=/lib/$(strip $(subst ",, $(notdir $(SYSTEM_LDSO)))) BUILD_DYNAMIC_LINKER:=/lib/$(strip $(subst ",, $(notdir $(SYSTEM_LDSO)))) endif endif ifeq ($(UCLIBC_HAS_SOFT_FLOAT),y) CFLAGS += $(call check_gcc,-msoft-float,) endif CFLAGS_NOPIC:=$(CFLAGS) ifeq ($(DOPIC),y) ifeq ($(strip $(TARGET_ARCH)),cris) CFLAGS += -fpic -mlinux else CFLAGS += -fPIC endif endif LIBGCC_CFLAGS ?= $(CFLAGS) $(CPU_CFLAGS-y) LIBGCC:=$(shell $(CC) $(LIBGCC_CFLAGS) -print-libgcc-file-name) LIBGCC_DIR:=$(dir $(LIBGCC)) # TARGET_PREFIX is the directory under which which the uClibc runtime # environment will be installed and used on the target system. The # result will look something like the following: # TARGET_PREFIX/ # lib/ # usr/lib/ # etc/ # Very few people will need to change this value from the default... TARGET_PREFIX = / ######################################## # # uClinux shared lib support # ifeq ($(CONFIG_BINFMT_SHARED_FLAT),y) # For the shared version of this, we specify no stack and its library ID FLTFLAGS += -s 0 LIBID=1 export LIBID FLTFLAGS SHARED_TARGET = lib/libc endif