123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407 |
- # 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=arm-linux-
- # will build uClibc for 'arm'.
- ifndef CROSS
- CROSS=
- endif
- CC = $(CROSS)gcc
- AR = $(CROSS)ar
- LD = $(CROSS)ld
- NM = $(CROSS)nm
- STRIPTOOL = $(CROSS)strip
- 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 := 28
- VERSION := $(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
- # Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
- LC_ALL := C
- export MAJOR_VERSION MINOR_VERSION SUBLEVEL VERSION LC_ALL
- SHARED_MAJORNAME:=libc.so.$(MAJOR_VERSION)
- UCLIBC_LDSO:=ld-uClibc.so.$(MAJOR_VERSION)
- NONSHARED_LIBNAME:=uclibc_nonshared.a
- # 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) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \
- then echo "$(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:=$(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 $(DEVEL_PREFIX))))))
- KERNEL_SOURCE:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(KERNEL_SOURCE))))))
- export RUNTIME_PREFIX DEVEL_PREFIX KERNEL_SOURCE
- ARFLAGS:=cr
- OPTIMIZATION:=
- PICFLAG:=-fPIC
- PIEFLAG_NAME:=-fPIE
- # Some nice CPU specific optimizations
- ifeq ($(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_ELAN)+=-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-$(CONFIG_PENTIUMII)+=$(call check_gcc,-march=pentium2,-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,-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) $(call check_gcc,-falign-functions=0,-malign-functions=0)
- CPU_CFLAGS-$(CONFIG_NEHEMIAH)+=$(call check_gcc,-march=c3-2,-march=i686)
- endif
- ifeq ($(strip $(TARGET_ARCH)),sparc)
- CPU_CFLAGS-$(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_LDFLAGS-$(ARCH_BIG_ENDIAN)+=-EB
- CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-mlittle-endian
- CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mbig-endian
- CPU_CFLAGS-$(CONFIG_GENERIC_ARM)+=
- CPU_CFLAGS-$(CONFIG_ARM610)+=-mtune=arm610 -march=armv3
- CPU_CFLAGS-$(CONFIG_ARM710)+=-mtune=arm710 -march=armv3
- 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=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 $(TARGET_ARCH)),mips)
- CPU_CFLAGS-$(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-$(CONFIG_MIPS_ISA_4)+=-mips4 -mtune=mips4
- CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS32)+=-mips32 -mtune=mips32
- CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS64)+=-mips64 -mtune=mips32
- endif
- ifeq ($(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-$(CONFIG_SH3)+=-m3
- ifeq ($(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 $(TARGET_ARCH)),sh64)
- OPTIMIZATION+=-fstrict-aliasing
- CPU_LDFLAGS-$(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_SH5)+=-m5-32media
- 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-$(CONFIG_CRIS)+=-mlinux
- PICFLAG:=-fpic
- PIEFLAG_NAME:=-fpie
- endif
- ifeq ($(strip $(TARGET_ARCH)),powerpc)
- # PowerPC can hold 8192 entries in its GOT with -fpic which is more than
- # enough. Therefore use -fpic which will reduce code size and generates
- # faster code.
- PICFLAG:=-fpic
- PIEFLAG_NAME:=-fpie
- endif
- ifeq ($(strip $(TARGET_ARCH)),frv)
- CPU_LDFLAGS-$(CONFIG_FRV)+=-melf32frvfd
- CPU_CFLAGS-$(CONFIG_FRV)+=-mfdpic
- # Using -pie causes the program to have an interpreter, which is
- # forbidden, so we must make do with -shared. Unfortunately,
- # -shared by itself would get us global function descriptors
- # and calls through PLTs, dynamic resolution of symbols, etc,
- # which would break as well, but -Bsymbolic comes to the rescue.
- export LDPIEFLAG:=-shared -Bsymbolic
- UCLIBC_LDSO=ld.so.1
- endif
- # Keep the check_gcc from being needlessly executed
- ifndef PIEFLAG
- ifneq ($(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 $(ARCH_CFLAGS)))
- CPU_CFLAGS=$(subst ",, $(strip $(CPU_CFLAGS-y)))
- LDADD_LIBFLOAT=
- ifeq ($(UCLIBC_HAS_SOFT_FLOAT),y)
- # Add -msoft-float to the CPU_FLAGS since ldso and libdl ignore CFLAGS.
- # 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 $(TARGET_ARCH)),arm)
- # No longer needed with current toolchains, but leave it here for now.
- # If anyone is actually still using gcc 2.95 (say), they can uncomment it.
- # LDADD_LIBFLOAT=-lfloat
- endif
- endif
- SSP_DISABLE_FLAGS?=$(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:=$(SSP_DISABLE_FLAGS)
- endif
- # Some nice CFLAGS to work with
- CFLAGS:=$(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 += -O0 -g3
- LDFLAGS := $(LDFLAGS_NOSTRIP)
- STRIPTOOL:= true -Since_we_are_debugging
- else
- CFLAGS += $(OPTIMIZATION) $(XARCH_CFLAGS)
- LDFLAGS := $(LDFLAGS_NOSTRIP) -s
- endif
- # we try to compile all sources at once into an object (IMA), but
- # gcc-3.3.x does not support it
- # gcc-3.4.x supports it, but does not need and support --combine
- # gcc-4.0.x supports it, supports the --combine flag, but does not need it
- # gcc-4.1(200506xx) supports it, but needs the --combine flag, else libs are useless
- GCC_VER?=$(shell $(CC) -dumpversion | cut -d . -f 1,2)
- ifeq ($(GCC_VER),3.3)
- DOMULTI=n
- else
- CFLAGS+=$(call check_gcc,--combine,)
- endif
- ifeq ($(UCLIBC_HAS_THREADS),y)
- ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y)
- PTNAME := nptl
- else
- PTNAME := linuxthreads
- endif
- PTDIR := $(TOPDIR)libpthread/$(PTNAME)
- # set up system dependencies include dirs (NOTE: order matters!)
- ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y)
- PTINC:= -I$(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 \
- -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$(PTDIR)/sysdeps/$(TARGET_ARCH) \
- -I$(PTDIR)/sysdeps/pthread
- endif
- CFLAGS+=$(PTINC)
- endif
- ifeq ($(UCLIBC_BUILD_RELRO),y)
- LDFLAGS+=-z relro
- endif
- ifeq ($(UCLIBC_BUILD_NOW),y)
- LDFLAGS+=-z now
- endif
- # Sigh, some stupid versions of gcc can't seem to cope with '-iwithprefix include'
- #CFLAGS+=-iwithprefix include
- CFLAGS+=-isystem $(shell $(CC) -print-file-name=include)
- ifneq ($(DOASSERTS),y)
- CFLAGS+=-DNDEBUG
- endif
- ifeq ($(DOPIC),y)
- CFLAGS+=$(PICFLAG)
- endif
- # Keep the check_as from being needlessly executed
- ASFLAGS = $(CFLAGS)
- ifndef ASFLAGS_NOEXEC
- ifeq ($(UCLIBC_BUILD_NOEXECSTACK),y)
- 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) $(LIBGCC_CFLAGS) -print-libgcc-file-name)
- LIBGCC_DIR:=$(dir $(LIBGCC))
- ########################################
- #
- # uClinux shared lib support
- #
- ifeq ($(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
- TARGET_ARCH:=$(strip $(subst ",, $(strip $(TARGET_ARCH))))
|