# Rules.make for uClibc
#
-# This file contains rules which are shared between multiple Makefiles. All
-# normal configuration options live in the file named "Config". You probably
-# should not mess with this file unless you know what you are doing...
-# -Erik Andersen <andersen@lineo.com> < andersee@debian.org>
-#
-# Copyright (C) 2000, 2001 by Lineo, inc.
+# 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
# 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'.
-include $(TOPDIR)Config
+ifndef CROSS
+CROSS=
+endif
+CC= $(CROSS)gcc
+AR= $(CROSS)ar
+LD= $(CROSS)ld
+NM= $(CROSS)nm
+STRIPTOOL= $(CROSS)strip
+
+INSTALL= install
+LN= ln
+RM= rm -f
+
+# Select the compiler needed to build binaries for your development system
+HOSTCC=gcc
+HOSTCFLAGS=-O2 -Wall
+
+
+#--------------------------------------------------------
+# Nothing beyond this point should ever be touched by mere mortals.
+# Unless you hang out with the gods, you should probably leave all
+# this stuff alone.
+MAJOR_VERSION:=0
+MINOR_VERSION:=9
+SUBLEVEL:=24
+VERSION:=$(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
-GCCINCDIR = $(shell $(CC) -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp")
+# 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 "$(2)"; fi)
+
+# Make certain these contain a final "/", but no "//"s.
+TARGET_ARCH:=$(strip $(subst ",, $(strip $(TARGET_ARCH))))
+RUNTIME_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(RUNTIME_PREFIX))))))
+DEVEL_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(DEVEL_PREFIX))))))
+export RUNTIME_PREFIX DEVEL_PREFIX
+
+ARFLAGS:=r
+
+OPTIMIZATION:=
+PICFLAG:=-fPIC
+# Some nice CPU specific optimizations
+ifeq ($(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
-# use '-Os' optimization if available, else use -O2, allow Config to override
-ifndef OPTIMIZATION
-OPTIMIZATION = $(shell if $(CC) -Os -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \
- then echo "-Os"; else echo "-O2" ; fi)
+ifeq ($(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=armv4
+ 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-$(CONFIG_ARM_XSCALE)+=-march=armv4 -Wa,-mcpu=xscale
endif
-ARFLAGS=r
+ifeq ($(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-$(CONFIG_SH3)+=-m3
+ CPU_CFLAGS-$(CONFIG_SH4)+=-m4
+endif
-CCFLAGS=$(WARNINGS) $(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) -Dlinux -D__linux__ -I$(TOPDIR)include -I$(GCCINCDIR) -I. -D__LIBC__
+ifeq ($(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
-CFLAGS=$(ARCH_CFLAGS) $(CCFLAGS) $(DEFS) $(ARCH_CFLAGS2)
+ifeq ($(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 $(DODEBUG)),true)
- CFLAGS += -g
- LDFLAGS = -nostdlib -Wl,-warn-common
- STRIPTOOL = /bin/true -Since_we_are_debugging
-else
- CFLAGS += -DNDEBUG #-fomit-frame-pointer
- LDFLAGS = -s -nostdlib -Wl,-warn-common
+ifeq ($(strip $(TARGET_ARCH)),cris)
+ CPU_LDFLAGS-$(CONFIG_CRIS)+=-mcrislinux
+ CPU_CFLAGS-$(CONFIG_CRIS)+=-mlinux
+ PICFLAG=-fpic
endif
-ifndef $(PREFIX)
- PREFIX = `pwd`/_install
+# use '-Os' optimization if available, else use -O2, allow Config to override
+OPTIMIZATION+=$(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 $(CPU_CFLAGS-y)))
+
+LDADD_LIBFLOAT=
+ifeq ($(strip $(UCLIBC_HAS_SOFT_FLOAT)),y)
+# Add -msoft-float to the CPU_FLAGS since ldso and libdl ignore CFLAGS.
+# If -msoft-float isn't supported, we want an error anyway.
+ CPU_CFLAGS += -msoft-float
+ifeq ($(strip $(TARGET_ARCH)),arm)
+ LDADD_LIBFLOAT=-lfloat
endif
+endif
+
+# Some nice CFLAGS to work with
+CFLAGS=$(XWARNINGS) $(OPTIMIZATION) $(XARCH_CFLAGS) $(CPU_CFLAGS) \
+ -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I.
-ifneq ($(strip $(HAS_MMU)),true)
- CFLAGS += -D__HAS_NO_MMU__
+ifeq ($(DODEBUG),y)
+ #CFLAGS += -g3
+ CFLAGS = $(XWARNINGS) -O0 -g3 $(CPU_CFLAGS) -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I.
+ LDFLAGS:= $(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc
+ STRIPTOOL:= true -Since_we_are_debugging
+else
+ LDFLAGS := $(CPU_LDFLAGS-y) -s -shared --warn-common --warn-once -z combreloc
endif
-ifneq ($(strip $(HAS_FLOATS)),true)
- CFLAGS += -D__HAS_NO_FLOATS__
+# Sigh, some stupid versions of gcc can't seem to cope with '-iwithprefix include'
+#CFLAGS+=-iwithprefix include
+CFLAGS+=$(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_PREFIX)/$(UCLIBC_LDSO)
+ else
+ LDSO:=$(SYSTEM_LDSO)
+ DYNAMIC_LINKER:=/lib/$(strip $(subst ",, $(notdir $(SYSTEM_LDSO))))
+ endif
endif
-ifeq ($(strip $(TARGET_ARCH)),m68k)
- CFLAGS += -D__VFORK_MACRO__ -Dconst= -D__const= -D__extension__=
+CFLAGS_NOPIC:=$(CFLAGS)
+ifeq ($(DOPIC),y)
+ CFLAGS += $(PICFLAG)
endif
-NATIVE_ARCH = $(shell uname -m | sed -e 's/i.86/i386/' -e 's/sparc.*/sparc/' -e 's/arm.*/arm/g' -e 's/m68k.*/m68k/')
+LIBGCC_CFLAGS ?= $(CFLAGS) $(CPU_CFLAGS-y)
+LIBGCC:=$(shell $(CC) $(LIBGCC_CFLAGS) -print-libgcc-file-name)
+LIBGCC_DIR:=$(dir $(LIBGCC))
-# It turns out the currently, function-sections causes ldelf2flt to segfault.
-# So till further notice, this is disabled by default....
-#
-# Use '-ffunction-sections -fdata-sections' and '--gc-sections' if they work
-# to try and strip out any unused junk automagically....
+########################################
#
-#ifeq ($(shell $(CC) -ffunction-sections -fdata-sections -S \
-# -o /dev/null -xc /dev/null && $(LD) --gc-sections -v >/dev/null && echo 1),1)
-# CFLAGS += -ffunction-sections -fdata-sections
-# LDFLAGS += --gc-sections
-#endif
+# uClinux shared lib support
+#
+
+ifeq ($(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))))
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