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# Rules.make for uClibc |
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# |
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# Copyright (C) 2000 by Lineo, inc. |
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# Copyright (C) 2000-2002 Erik Andersen <andersen@uclibc.org> |
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# |
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# This program is free software; you can redistribute it and/or modify it under |
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# the terms of the GNU Library General Public License as published by the Free |
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# Software Foundation; either version 2 of the License, or (at your option) any |
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# later version. |
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# |
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# This program is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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# FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more |
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# details. |
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# |
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# You should have received a copy of the GNU Library General Public License |
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# along with this program; if not, write to the Free Software Foundation, Inc., |
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# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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|
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|
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#-------------------------------------------------------- |
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# This file contains rules which are shared between multiple Makefiles. |
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# All normal configuration options live in the file named ".config". |
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# Don't mess with this file unless you know what you are doing. |
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|
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|
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#-------------------------------------------------------- |
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# If you are running a cross compiler, you will want to set 'CROSS' |
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# to something more interesting... Target architecture is determined |
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# by asking the CC compiler what arch it compiles things for, so unless |
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# your compiler is broken, you should not need to specify TARGET_ARCH |
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# |
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# Most people will set this stuff on the command line, i.e. |
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# make CROSS=arm-linux- |
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# will build uClibc for 'arm'. |
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|
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ifndef CROSS |
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CROSS= |
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endif |
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CC= $(CROSS)gcc |
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AR= $(CROSS)ar |
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LD= $(CROSS)ld |
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NM= $(CROSS)nm |
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STRIPTOOL= $(CROSS)strip |
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|
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INSTALL= install |
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LN= ln |
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RM= rm -f |
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|
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# Select the compiler needed to build binaries for your development system |
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HOSTCC=gcc |
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HOSTCFLAGS=-O2 -Wall |
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|
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|
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#-------------------------------------------------------- |
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# Nothing beyond this point should ever be touched by mere mortals. |
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# Unless you hang out with the gods, you should probably leave all |
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# this stuff alone. |
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MAJOR_VERSION:=0 |
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MINOR_VERSION:=9 |
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SUBLEVEL:=26 |
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VERSION:=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL) |
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# Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc. |
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LC_ALL:= C |
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export MAJOR_VERSION MINOR_VERSION SUBLEVEL VERSION LC_ALL |
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|
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SHARED_FULLNAME:=libuClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so |
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SHARED_MAJORNAME:=libc.so.$(MAJOR_VERSION) |
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UCLIBC_LDSO:=ld-uClibc.so.$(MAJOR_VERSION) |
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LIBNAME:=libc.a |
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LIBC:=$(TOPDIR)libc/$(LIBNAME) |
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|
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# Pull in the user's uClibc configuration |
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ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),) |
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-include $(TOPDIR).config |
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endif |
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|
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# A nifty macro to make testing gcc features easier |
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check_gcc=$(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \ |
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then echo "$(1)"; else echo "$(2)"; fi) |
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|
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# Make certain these contain a final "/", but no "//"s. |
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TARGET_ARCH:=$(strip $(subst ",, $(strip $(TARGET_ARCH)))) |
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RUNTIME_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(RUNTIME_PREFIX)))))) |
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DEVEL_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(DEVEL_PREFIX)))))) |
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export RUNTIME_PREFIX DEVEL_PREFIX |
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|
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ARFLAGS:=r |
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|
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OPTIMIZATION:= |
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PICFLAG:=-fPIC |
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# Some nice CPU specific optimizations |
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ifeq ($(strip $(TARGET_ARCH)),i386) |
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OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,) |
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OPTIMIZATION+=$(call check_gcc,-falign-jumps=0 -falign-loops=0,-malign-jumps=0 -malign-loops=0) |
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CPU_CFLAGS-$(CONFIG_386)+=-march=i386 |
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CPU_CFLAGS-$(CONFIG_486)+=-march=i486 |
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CPU_CFLAGS-$(CONFIG_ELAN)+=-march=i486 |
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CPU_CFLAGS-$(CONFIG_586)+=-march=i586 |
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CPU_CFLAGS-$(CONFIG_586MMX)+=$(call check_gcc,-march=pentium-mmx,-march=i586) |
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CPU_CFLAGS-$(CONFIG_686)+=-march=i686 |
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CPU_CFLAGS-$(CONFIG_PENTIUMII)+=$(call check_gcc,-march=pentium2,-march=i686) |
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CPU_CFLAGS-$(CONFIG_PENTIUMIII)+=$(call check_gcc,-march=pentium3,-march=i686) |
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CPU_CFLAGS-$(CONFIG_PENTIUM4)+=$(call check_gcc,-march=pentium4,-march=i686) |
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CPU_CFLAGS-$(CONFIG_K6)+=$(call check_gcc,-march=k6,-march=i586) |
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CPU_CFLAGS-$(CONFIG_K7)+=$(call check_gcc,-march=athlon,-malign-functions=4 -march=i686) |
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CPU_CFLAGS-$(CONFIG_CRUSOE)+=-march=i686 -malign-functions=0 -malign-jumps=0 -malign-loops=0 |
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CPU_CFLAGS-$(CONFIG_WINCHIPC6)+=$(call check_gcc,-march=winchip-c6,-march=i586) |
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CPU_CFLAGS-$(CONFIG_WINCHIP2)+=$(call check_gcc,-march=winchip2,-march=i586) |
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CPU_CFLAGS-$(CONFIG_CYRIXIII)+=$(call check_gcc,-march=c3,-march=i486) -malign-functions=0 -malign-jumps=0 -malign-loops=0 |
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CPU_CFLAGS-$(CONFIG_NEHEMIAH)+=$(call check_gcc,-march=c3-2,-march=i686) |
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endif |
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|
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ifeq ($(strip $(TARGET_ARCH)),arm) |
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OPTIMIZATION+=-fstrict-aliasing |
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CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN)+=-EL |
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CPU_LDFLAGS-$(ARCH_BIG_ENDIAN)+=-EB |
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CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-mlittle-endian |
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CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mbig-endian |
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CPU_CFLAGS-$(CONFIG_GENERIC_ARM)+= |
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CPU_CFLAGS-$(CONFIG_ARM610)+=-mtune=arm610 -march=armv3 |
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CPU_CFLAGS-$(CONFIG_ARM710)+=-mtune=arm710 -march=armv3 |
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CPU_CFLAGS-$(CONFIG_ARM720T)+=-mtune=arm7tdmi -march=armv4 |
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CPU_CFLAGS-$(CONFIG_ARM920T)+=-mtune=arm9tdmi -march=armv4 |
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CPU_CFLAGS-$(CONFIG_ARM922T)+=-mtune=arm9tdmi -march=armv4 |
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CPU_CFLAGS-$(CONFIG_ARM926T)+=-mtune=arm9tdmi -march=armv4 |
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CPU_CFLAGS-$(CONFIG_ARM_SA110)+=-mtune=strongarm110 -march=armv4 |
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CPU_CFLAGS-$(CONFIG_ARM_SA1100)+=-mtune=strongarm1100 -march=armv4 |
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CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=$(call check_gcc,-mtune=xscale,-mtune=strongarm110) |
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CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=-march=armv4 -Wa,-mcpu=xscale |
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endif |
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|
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ifeq ($(strip $(TARGET_ARCH)),mips) |
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CPU_CFLAGS-$(CONFIG_MIPS_ISA_1)+=-mips1 |
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CPU_CFLAGS-$(CONFIG_MIPS_ISA_2)+=-mips2 -mtune=mips2 |
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CPU_CFLAGS-$(CONFIG_MIPS_ISA_3)+=-mips3 -mtune=mips3 |
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CPU_CFLAGS-$(CONFIG_MIPS_ISA_4)+=-mips4 -mtune=mips4 |
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CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS32)+=-mips32 -mtune=mips32 |
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CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS64)+=-mips64 -mtune=mips32 |
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endif |
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|
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ifeq ($(strip $(TARGET_ARCH)),sh) |
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OPTIMIZATION+=-fstrict-aliasing |
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OPTIMIZATION+= $(call check_gcc,-mprefergot,) |
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CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN)+=-EL |
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CPU_LDFLAGS-$(ARCH_BIG_ENDIAN)+=-EB |
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CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-ml |
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CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mb |
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CPU_CFLAGS-$(CONFIG_SH2)+=-m2 |
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CPU_CFLAGS-$(CONFIG_SH3)+=-m3 |
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CPU_CFLAGS-$(CONFIG_SH4)+=-m4 |
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endif |
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|
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ifeq ($(strip $(TARGET_ARCH)),sh64) |
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OPTIMIZATION+=-fstrict-aliasing |
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CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN):=-EL |
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CPU_LDFLAGS-$(ARCH_BIG_ENDIAN):=-EB |
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CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN):=-ml |
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CPU_CFLAGS-$(ARCH_BIG_ENDIAN):=-mb |
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CPU_CFLAGS-$(CONFIG_SH5)+=-m5-32media |
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endif |
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|
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ifeq ($(strip $(TARGET_ARCH)),h8300) |
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CPU_LDFLAGS-$(CONFIG_H8300H)+= -ms8300h |
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CPU_LDFLAGS-$(CONFIG_H8S) += -ms8300s |
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CPU_CFLAGS-$(CONFIG_H8300H) += -mh -mint32 -fsigned-char |
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CPU_CFLAGS-$(CONFIG_H8S) += -ms -mint32 -fsigned-char |
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endif |
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|
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ifeq ($(strip $(TARGET_ARCH)),cris) |
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CPU_LDFLAGS-$(CONFIG_CRIS)+=-mcrislinux |
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CPU_CFLAGS-$(CONFIG_CRIS)+=-mlinux |
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PICFLAG=-fpic |
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endif |
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|
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ifeq ($(strip $(TARGET_ARCH)),frv) |
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CPU_LDFLAGS-$(CONFIG_FRV)+=-melf32frvfd |
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CPU_CFLAGS-$(CONFIG_FRV)+=-mfdpic |
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PICFLAG=-fPIC -DPIC |
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PIEFLAG=-fpie |
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# Using -pie causes the program to have an interpreter, which is |
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# forbidden, so we must make do with -shared. Unfortunately, |
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# -shared by itself would get us global function descriptors |
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# and calls through PLTs, dynamic resolution of symbols, etc, |
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# which would break as well, but -Bsymbolic comes to the rescue. |
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LDPIEFLAG=-shared -Bsymbolic |
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UCLIBC_LDSO=ld.so.1 |
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endif |
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|
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# Use '-Os' optimization if available, else use -O2, allow Config to override |
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OPTIMIZATION+=$(call check_gcc,-Os,-O2) |
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# Use the gcc 3.4 -funit-at-a-time optimization when available |
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OPTIMIZATION+=$(call check_gcc,-funit-at-a-time,) |
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|
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|
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# Add a bunch of extra pedantic annoyingly strict checks |
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XWARNINGS=$(subst ",, $(strip $(WARNINGS))) -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing |
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XARCH_CFLAGS=$(subst ",, $(strip $(ARCH_CFLAGS))) |
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CPU_CFLAGS=$(subst ",, $(strip $(CPU_CFLAGS-y))) |
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|
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LDADD_LIBFLOAT= |
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ifeq ($(strip $(UCLIBC_HAS_SOFT_FLOAT)),y) |
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# Add -msoft-float to the CPU_FLAGS since ldso and libdl ignore CFLAGS. |
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# If -msoft-float isn't supported, we want an error anyway. |
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CPU_CFLAGS += -msoft-float |
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ifeq ($(strip $(TARGET_ARCH)),arm) |
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LDADD_LIBFLOAT=-lfloat |
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endif |
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endif |
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|
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# Some nice CFLAGS to work with |
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CFLAGS=$(XWARNINGS) $(OPTIMIZATION) $(XARCH_CFLAGS) $(CPU_CFLAGS) \ |
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-fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I. |
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|
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ifeq ($(DODEBUG),y) |
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#CFLAGS += -g3 |
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CFLAGS = $(XWARNINGS) -O0 -g3 $(CPU_CFLAGS) -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I. |
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LDFLAGS:= $(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc |
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STRIPTOOL:= true -Since_we_are_debugging |
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else |
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LDFLAGS := $(CPU_LDFLAGS-y) -s -shared --warn-common --warn-once -z combreloc |
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endif |
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|
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# Sigh, some stupid versions of gcc can't seem to cope with '-iwithprefix include' |
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#CFLAGS+=-iwithprefix include |
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CFLAGS+=$(shell $(CC) -print-search-dirs | sed -ne "s/install: *\(.*\)/-I\1include/gp") |
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|
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ifneq ($(DOASSERTS),y) |
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CFLAGS += -DNDEBUG |
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endif |
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|
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ifeq ($(HAVE_SHARED),y) |
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LIBRARY_CACHE:=#-DUSE_CACHE |
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ifeq ($(BUILD_UCLIBC_LDSO),y) |
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LDSO:=$(TOPDIR)lib/$(UCLIBC_LDSO) |
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DYNAMIC_LINKER:=$(SHARED_LIB_LOADER_PREFIX)/$(UCLIBC_LDSO) |
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else |
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LDSO:=$(SYSTEM_LDSO) |
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DYNAMIC_LINKER:=/lib/$(strip $(subst ",, $(notdir $(SYSTEM_LDSO)))) |
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endif |
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endif |
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|
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CFLAGS_NOPIC:=$(CFLAGS) |
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ifeq ($(DOPIC),y) |
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CFLAGS += $(PICFLAG) |
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endif |
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|
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LIBGCC_CFLAGS ?= $(CFLAGS) $(CPU_CFLAGS-y) |
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LIBGCC:=$(shell $(CC) $(LIBGCC_CFLAGS) -print-libgcc-file-name) |
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LIBGCC_DIR:=$(dir $(LIBGCC)) |
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|
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######################################## |
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# |
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# uClinux shared lib support |
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# |
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|
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ifeq ($(CONFIG_BINFMT_SHARED_FLAT),y) |
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# For the shared version of this, we specify no stack and its library ID |
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FLTFLAGS += -s 0 |
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LIBID=1 |
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export LIBID FLTFLAGS |
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SHARED_TARGET = lib/libc |
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endif |
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|
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TARGET_ARCH:=$(strip $(subst ",, $(strip $(TARGET_ARCH)))) |
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