diff options
| -rw-r--r-- | Rules.mak | 176 |
1 files changed, 102 insertions, 74 deletions
@@ -1,22 +1,10 @@ # Rules.make for uClibc # # Copyright (C) 2000 by Lineo, inc. -# Copyright (C) 2000-2002 Erik Andersen <andersen@uclibc.org> +# Copyright (C) 2000-2005 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. +# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. # -# 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 @@ -49,6 +37,8 @@ INSTALL = install LN = ln RM = rm -f +STRIP_FLAGS ?= -x -R .note -R .comment + # Select the compiler needed to build binaries for your development system HOSTCC = gcc HOSTCFLAGS = -O2 -Wall @@ -66,9 +56,15 @@ VERSION := $(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL) LC_ALL := C export MAJOR_VERSION MINOR_VERSION SUBLEVEL VERSION LC_ALL -SHARED_MAJORNAME:=libc.so.$(MAJOR_VERSION) -UCLIBC_LDSO:=ld-uClibc.so.$(MAJOR_VERSION) -NONSHARED_LIBNAME:=uclibc_nonshared.a +LIBC := libc +SHARED_MAJORNAME := $(LIBC).so.$(MAJOR_VERSION) +UCLIBC_LDSO := ld-uClibc.so.$(MAJOR_VERSION) +NONSHARED_LIBNAME := uclibc_nonshared.a +libc := $(top_builddir)lib/$(LIBC).so +interp := $(top_builddir)libc/misc/internals/interp.os + +#LIBS :=$(interp) -L$(top_builddir)lib -lc +LIBS := $(interp) -L$(top_builddir)lib $(libc) # Make sure DESTDIR and PREFIX can be used to install # PREFIX is a uClibcism while DESTDIR is a common GNUism @@ -78,7 +74,7 @@ endif # Pull in the user's uClibc configuration ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),) --include $(TOPDIR).config +-include $(top_builddir).config endif ifndef CROSS @@ -94,7 +90,7 @@ check_as=$(shell \ then echo "-Wa,$(1)"; fi) # Setup some shortcuts so that silent mode is silent like it should be -ifeq ($(subst s,,$(MAKEFLAGS)),$(MAKEFLAGS)) +ifeq ($(findstring s,$(MAKEFLAGS)),) export MAKE_IS_SILENT=n SECHO=@echo SHELL_SET_X=set -x @@ -105,7 +101,8 @@ SHELL_SET_X=set +x endif # Make certain these contain a final "/", but no "//"s. -TARGET_ARCH:=$(shell grep -s ^TARGET_ARCH $(TOPDIR)/.config | sed -e 's/^TARGET_ARCH=//' -e 's/"//g') +TARGET_ARCH:=$(shell grep -s ^TARGET_ARCH $(top_builddir)/.config | sed -e 's/^TARGET_ARCH=//' -e 's/"//g') +TARGET_ARCH:=$(strip $(subst ",, $(strip $(TARGET_ARCH)))) RUNTIME_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(RUNTIME_PREFIX)))))) DEVEL_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(DEVEL_PREFIX)))))) KERNEL_SOURCE:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(KERNEL_SOURCE)))))) @@ -118,7 +115,7 @@ PICFLAG:=-fPIC PIEFLAG_NAME:=-fPIE # Some nice CPU specific optimizations -ifeq ($(strip $(TARGET_ARCH)),i386) +ifeq ($(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-$(CONFIG_386)+=-march=i386 @@ -139,14 +136,14 @@ ifeq ($(strip $(TARGET_ARCH)),i386) CPU_CFLAGS-$(CONFIG_NEHEMIAH)+=$(call check_gcc,-march=c3-2,-march=i686) endif -ifeq ($(strip $(TARGET_ARCH)),sparc) +ifeq ($(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 $(TARGET_ARCH)),arm) +ifeq ($(TARGET_ARCH),arm) OPTIMIZATION+=-fstrict-aliasing CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN)+=-EL CPU_LDFLAGS-$(ARCH_BIG_ENDIAN)+=-EB @@ -166,7 +163,7 @@ ifeq ($(strip $(TARGET_ARCH)),arm) CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=-march=armv4 -Wa,-mcpu=xscale endif -ifeq ($(strip $(TARGET_ARCH)),mips) +ifeq ($(TARGET_ARCH),mips) CPU_CFLAGS-$(CONFIG_MIPS_ISA_1)+=-mips1 CPU_CFLAGS-$(CONFIG_MIPS_ISA_2)+=-mips2 -mtune=mips2 CPU_CFLAGS-$(CONFIG_MIPS_ISA_3)+=-mips3 -mtune=mips3 @@ -175,7 +172,7 @@ ifeq ($(strip $(TARGET_ARCH)),mips) CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS64)+=-mips64 -mtune=mips32 endif -ifeq ($(strip $(TARGET_ARCH)),sh) +ifeq ($(TARGET_ARCH),sh) OPTIMIZATION+=-fstrict-aliasing OPTIMIZATION+= $(call check_gcc,-mprefergot,) CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN)+=-EL @@ -184,7 +181,7 @@ ifeq ($(strip $(TARGET_ARCH)),sh) CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mb CPU_CFLAGS-$(CONFIG_SH2)+=-m2 CPU_CFLAGS-$(CONFIG_SH3)+=-m3 -ifeq ($(strip $(UCLIBC_HAS_FLOATS)),y) +ifeq ($(UCLIBC_HAS_FLOATS),y) CPU_CFLAGS-$(CONFIG_SH2A)+=-m2a CPU_CFLAGS-$(CONFIG_SH4)+=-m4 else @@ -193,7 +190,7 @@ else endif endif -ifeq ($(strip $(TARGET_ARCH)),sh64) +ifeq ($(TARGET_ARCH),sh64) OPTIMIZATION+=-fstrict-aliasing CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN):=-EL CPU_LDFLAGS-$(ARCH_BIG_ENDIAN):=-EB @@ -202,21 +199,21 @@ ifeq ($(strip $(TARGET_ARCH)),sh64) CPU_CFLAGS-$(CONFIG_SH5)+=-m5-32media endif -ifeq ($(strip $(TARGET_ARCH)),h8300) +ifeq ($(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 $(TARGET_ARCH)),cris) +ifeq ($(TARGET_ARCH),cris) CPU_LDFLAGS-$(CONFIG_CRIS)+=-mcrislinux CPU_CFLAGS-$(CONFIG_CRIS)+=-mlinux PICFLAG:=-fpic PIEFLAG_NAME:=-fpie endif -ifeq ($(strip $(TARGET_ARCH)),powerpc) +ifeq ($(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. @@ -224,7 +221,7 @@ ifeq ($(strip $(TARGET_ARCH)),powerpc) PIEFLAG_NAME:=-fpie endif -ifeq ($(strip $(TARGET_ARCH)),frv) +ifeq ($(TARGET_ARCH),frv) CPU_LDFLAGS-$(CONFIG_FRV)+=-melf32frvfd CPU_CFLAGS-$(CONFIG_FRV)+=-mfdpic # Using -pie causes the program to have an interpreter, which is @@ -255,6 +252,15 @@ export LDPIEFLAG:=$(shell $(LD) --help | grep -q pie && echo "-Wl,-pie") endif endif +# Check for AS_NEEDED support in linker script (binutils>=2.16.1 has it) +ifndef ASNEEDED +ifneq ($(UCLIBC_HAS_SSP),y) +export ASNEEDED:= +else +export ASNEEDED:=$(shell (LD_TMP=$(mktemp LD_XXXXXX) ; echo "GROUP ( AS_NEEDED ( /usr/lib/libc.so ) )" > $LD_TMP && if $(LD) -T $LD_TMP -o /dev/null > /dev/null 2>&1; then echo "AS_NEEDED ( $(UCLIBC_LDSO) )"; else echo "$(UCLIBC_LDSO)"; fi; rm -f $LD_TMP ) ) +endif +endif + # Use '-Os' optimization if available, else use -O2, allow Config to override OPTIMIZATION+=$(call check_gcc,-Os,-O2) # Use the gcc 3.4 -funit-at-a-time optimization when available @@ -266,63 +272,90 @@ XARCH_CFLAGS=$(subst ",, $(strip $(ARCH_CFLAGS))) CPU_CFLAGS=$(subst ",, $(strip $(CPU_CFLAGS-y))) LDADD_LIBFLOAT= -ifeq ($(strip $(UCLIBC_HAS_SOFT_FLOAT)),y) +ifeq ($(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 $(TARGET_ARCH)),arm) +ifeq ($(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:=$(call check_gcc,-fno-stack-protector,) +SSP_DISABLE_FLAGS?=$(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,) +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:=$(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc -z defs + -fno-builtin -nostdinc -D_LIBC -I$(top_builddir)include -I. +LDFLAGS_NOSTRIP:=$(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc + +ifeq ($(UCLIBC_BUILD_RELRO),y) +LDFLAGS_NOSTRIP+=-z relro +endif + +ifeq ($(UCLIBC_BUILD_NOW),y) +LDFLAGS_NOSTRIP+=-z now +endif + +LDFLAGS:=$(LDFLAGS_NOSTRIP) -z defs ifeq ($(DODEBUG),y) -ifeq ($(strip $(TARGET_ARCH)),mips) - CFLAGS += -O1 -g3 -else + #CFLAGS += -g3 CFLAGS += -O0 -g3 -endif - LDFLAGS := $(LDFLAGS_NOSTRIP) STRIPTOOL:= true -Since_we_are_debugging else CFLAGS += $(OPTIMIZATION) $(XARCH_CFLAGS) - LDFLAGS := $(LDFLAGS_NOSTRIP) -s + LDFLAGS += -s +endif + +ifeq ($(DOMULTI),y) +# 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. though fails on many sources +# 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 $(CC) -dumpversion | cut -d . -f 1) +ifeq ($(GCC_VER),3) +DOMULTI:=n +else +CFLAGS+=$(call check_gcc,--combine,) +endif +else +DOMULTI:=n endif ifeq ($(UCLIBC_HAS_THREADS),y) -ifeq ($(strip $(UCLIBC_HAS_THREADS_NATIVE)),y) +ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y) PTNAME := nptl else +ifeq ($(LINUXTHREADS_OLD),y) + PTNAME := linuxthreads.old +else PTNAME := linuxthreads endif -PTDIR := $(TOPDIR)libpthread/$(PTNAME) +endif +PTDIR := $(top_builddir)libpthread/$(PTNAME) # set up system dependencies include dirs (NOTE: order matters!) -ifeq ($(strip $(UCLIBC_HAS_THREADS_NATIVE)),y) -PTINC := -I$(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 $(PTDIR)/compat/libc-symbols.h +ifeq ($(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 \ + -Ildso/include \ + -include $(PTDIR)/compat/libc-symbols.h # # Test for TLS if NPTL support was selected. # @@ -341,19 +374,10 @@ gcc_tls_test_fail: @exit 1; endif else -# psm: the next 2 are probably incorrect, the generic header will -# win over the arch specific one -PTINC := -I$(PTDIR)/sysdeps/pthread \ - -I$(PTDIR)/sysdeps/$(TARGET_ARCH) -endif -endif - -ifeq ($(UCLIBC_BUILD_RELRO),y) -LDFLAGS+=-z relro +PTINC:= -I$(PTDIR)/sysdeps/$(TARGET_ARCH) \ + -I$(PTDIR)/sysdeps/pthread endif - -ifeq ($(UCLIBC_BUILD_NOW),y) -LDFLAGS+=-z now +CFLAGS+=$(PTINC) endif # Sigh, some stupid versions of gcc can't seem to cope with '-iwithprefix include' @@ -361,16 +385,16 @@ endif CFLAGS+=-isystem $(shell $(CC) -print-file-name=include) ifneq ($(DOASSERTS),y) - CFLAGS += -DNDEBUG +CFLAGS+=-DNDEBUG endif -CFLAGS_NOPIC:=$(CFLAGS) -ifeq ($(DOPIC),y) - CFLAGS += $(PICFLAG) +# moved from ldso/{ldso,libdl} +# BEWARE!!! At least mips* will die if -O0 is used!!! +ifeq ($(TARGET_ARCH),mips) +CFLAGS:=$(CFLAGS:-O0=-O1) 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) @@ -378,12 +402,18 @@ else export ASFLAGS_NOEXEC := endif endif -ASFLAGS += $(ASFLAGS_NOEXEC) +ASFLAGS = $(ASFLAGS_NOEXEC) LIBGCC_CFLAGS ?= $(CFLAGS) $(CPU_CFLAGS-y) LIBGCC:=$(shell $(CC) $(LIBGCC_CFLAGS) -print-libgcc-file-name) LIBGCC_DIR:=$(dir $(LIBGCC)) +# moved from libpthread/linuxthreads +ifeq ($(UCLIBC_CTOR_DTOR),y) +SHARED_START_FILES:=$(top_builddir)lib/crti.o $(LIBGCC_DIR)crtbeginS.o +SHARED_END_FILES:=$(LIBGCC_DIR)crtendS.o $(top_builddir)lib/crtn.o +endif + ######################################## # # uClinux shared lib support @@ -396,5 +426,3 @@ ifeq ($(CONFIG_BINFMT_SHARED_FLAT),y) export LIBID FLTFLAGS SHARED_TARGET = lib/libc endif - -TARGET_ARCH:=$(strip $(subst ",, $(strip $(TARGET_ARCH)))) |