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- # Rules.make for uClibc
- #
- # Copyright (C) 2000 by Lineo, inc.
- # Copyright (C) 2000-2002 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.
- #
- # 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'.
- CROSS=
- CC= $(CROSS)gcc
- AR= $(CROSS)ar
- LD= $(CROSS)ld
- NM= $(CROSS)nm
- STRIPTOOL= $(CROSS)strip
- # Select the compiler needed to build binaries for your development system
- NATIVE_CC=gcc
- NATIVE_CFLAGS=-O2 -Wall
- #--------------------------------------------------------
- # Nothing beyond this point should ever be touched by mere mortals.
- # Unless you hang out with the gods, you should probably leave all
- # this stuff alone.
- MAJOR_VERSION:=0
- MINOR_VERSION:=9
- SUBLEVEL:=16
- VERSION:=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
- # Ensure consistent filename sort order
- LC_COLLATE:= C
- export MAJOR_VERSION MINOR_VERSION SUBLEVEL VERSION LC_COLLATE
- 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_config := 1
- -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)
- NATIVE_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 $(CC) -dumpmachine | sed -e s'/-.*//' \
- -e 's/i.86/i386/' \
- -e 's/sparc.*/sparc/' \
- -e 's/arm.*/arm/g' \
- -e 's/m68k.*/m68k/' \
- -e 's/ppc/powerpc/g' \
- -e 's/v850.*/v850/g' \
- -e 's/sh[234]/sh/' \
- -e 's/mips-.*/mips/' \
- -e 's/mipsel-.*/mipsel/' \
- -e 's/cris.*/cris/' \
- )
- endif
- export TARGET_ARCH
- ARFLAGS:=r
- # use '-Os' optimization if available, else use -O2, allow Config to override
- OPTIMIZATION:=
- OPTIMIZATION+=$(call check_gcc,-Os,-O2)
- # 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-$(CONFIG_ARM7TDMI):="-mcpu=arm7tdmi"
- CPU_CFLAGS-$(CONFIG_STRONGARM):="-mcpu=strongarm"
- CPU_CFLAGS-$(CONFIG_XSCALE):="$(call check_gcc,-mcpu=xscale,-mcpu=strongarm)"
- 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 $(TARGET_ARCH)),h8300)
- CPU_LDFLAGS-y:=-mh8300h
- CPU_CFLAGS-y+=-mh -mint32 -fsigned-char
- endif
- # Add a bunch of extra pedantic annoyingly strict checks
- WARNINGS+=-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing
- # Some nice CFLAGS to work with
- CFLAGS:=$(WARNINGS) $(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) \
- -D_LIBC $(CPU_CFLAGS-y) $(ARCH_CFLAGS) -I$(TOPDIR)include -I.
- ifeq ($(DODEBUG),y)
- CFLAGS += -g
- LDFLAGS:= $(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc
- STRIPTOOL:= true -Since_we_are_debugging
- OPTIMIZATION=$(call check_gcc,-Os,-O2)
- 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:=$(SYSTEM_LDSO)
- DYNAMIC_LINKER:=/lib/$(notdir $(SYSTEM_LDSO))
- BUILD_DYNAMIC_LINKER:=/lib/$(notdir $(SYSTEM_LDSO))
- endif
- endif
- ifeq ($(DOPIC),y)
- CFLAGS += -fPIC
- endif
- ifeq ($(UCLIBC_HAS_SOFT_FLOAT),y)
- CFLAGS += $(call check_gcc,-msoft-float,)
- 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/ <contains all runtime and static libs>
- # usr/lib/ <this directory is searched for runtime libs>
- # etc/ <weher the shared library cache and configuration
- # information go if you enabled LIBRARY_CACHE above>
- # Very few people will need to change this value from the default...
- TARGET_PREFIX = /
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