clean_targets := clean realclean distclean \
objclean-y headers_clean-y CLEAN_utils
-noconfig_targets := menuconfig config oldconfig silentoldconfig randconfig \
- defconfig allyesconfig allnoconfig \
- xconfig gconfig update-po-config mconf qconf gconf conf \
+noconfig_targets := menuconfig config nconfig \
+ oldaskconfig silentoldconfig oldconfig allnoconfig allyesconfig \
+ alldefconfig randconfig defconfig savedefconfig listnewconfig \
+ olddefconfig \
+ xconfig gconfig update-po-config mconf qconf gconf nconf conf \
release dist tags help
# Select the compiler needed to build binaries for your development system
HOSTCC = gcc
-BUILD_CFLAGS = -Os -Wall
+BUILD_CFLAGS = -Os
#---------------------------------------------------------
# Nothing beyond this point should ever be touched by mere
qstrip = $(strip $(subst ",,$(1)))
#"))
+# kconfig stuff
KCONFIG_CONFIG ?= $(top_builddir).config
+KCONFIG_CONFIG := $(abspath $(KCONFIG_CONFIG))
+export KCONFIG_CONFIG
+KCONFIG_AUTOCONFIG := $(dir $(KCONFIG_CONFIG))include/config/auto.conf
+export KCONFIG_AUTOCONFIG
+KCONFIG_TRISTATE := $(dir $(KCONFIG_CONFIG))include/config/tristate.conf
+export KCONFIG_TRISTATE
+srctree := $(abspath $(top_srcdir))
+export srctree
+KCONFIG_AUTOHEADER := $(dir $(KCONFIG_CONFIG))include/generated/autoconf.h
+export KCONFIG_AUTOHEADER
+Kconfig := $(abspath $(top_srcdir)extra/Configs/Config.in)
# Pull in the user's uClibc configuration
-ifeq ($(filter $(noconfig_targets) $(clean_targets) CLEAN_%,$(MAKECMDGOALS)),)
-# Prevent make from searching
-__ABS_KCONFIG_CONFIG ?= $(abspath $(KCONFIG_CONFIG))
--include $(__ABS_KCONFIG_CONFIG)
-else
-# else we have to tell config where to write .config
-export KCONFIG_CONFIG
-endif
-ifeq ($(HAVE_DOT_CONFIG),y)
-# tell config where our .config lives
-export KCONFIG_CONFIG
+ifeq ($(filter $(noconfig_targets) clean CLEAN_%,$(MAKECMDGOALS)),)
+-include $(KCONFIG_CONFIG)
endif
TARGET_ARCH:=$(call qstrip,$(TARGET_ARCH))
LIBC := libc
SHARED_LIBNAME := $(LIBC).so.$(ABI_VERSION)
UBACKTRACE_DSO := libubacktrace.so.$(ABI_VERSION)
-ifneq ($(findstring $(TARGET_ARCH) , hppa64 ia64 mips64 powerpc64 s390x sparc64 x86_64 ),)
+
+UCLIBC_LDSO_NAME := ld-uClibc
+ARCH_NATIVE_BIT := 32
+ifneq ($(findstring $(TARGET_ARCH) , hppa64 ia64 powerpc64 s390x sparc64 x86_64 ),)
UCLIBC_LDSO_NAME := ld64-uClibc
ARCH_NATIVE_BIT := 64
else
-UCLIBC_LDSO_NAME := ld-uClibc
-ARCH_NATIVE_BIT := 32
+ifeq ($(CONFIG_MIPS_N64_ABI),y)
+UCLIBC_LDSO_NAME := ld64-uClibc
+ARCH_NATIVE_BIT := 64
endif
+endif
+
UCLIBC_LDSO := $(UCLIBC_LDSO_NAME).so.$(ABI_VERSION)
NONSHARED_LIBNAME := uclibc_nonshared.a
libc := $(top_builddir)lib/$(SHARED_LIBNAME)
if $(CC) -Wa,$(1) -Wa,-Z -c -o /dev/null -xassembler /dev/null > /dev/null 2>&1; \
then echo "-Wa,$(1)"; fi)
check_ld=$(shell \
- if $(LD) $(1) -o /dev/null -b binary /dev/null > /dev/null 2>&1; \
+ if $(CC) $(LDFLAG-fuse-ld) -Wl,$(1) $(CFLAG_-nostdlib) -o /dev/null -Wl,-b,binary /dev/null > /dev/null 2>&1; \
then echo "$(1)"; fi)
# Use variable indirection here so that we can have variable
ARFLAGS:=cr
+# Note: The check for -nostdlib has to be before all calls to check_ld
+$(eval $(call check-gcc-var,-nostdlib))
+LDFLAG-fuse-ld := $(filter -fuse-ld=%,$(EXTRA_UCLIBC_FLAGS))
+# deliberately not named CFLAG-fuse-ld since unchecked and from user
# Flags in OPTIMIZATION are used only for non-debug builds
GCC_MAJOR_VER ?= $(word 1,$(GCC_VER))
#GCC_MINOR_VER ?= $(word 2,$(GCC_VER))
+ifneq ($(TARGET_ARCH),arc)
ifeq ($(GCC_MAJOR_VER),4)
# shrinks code, results are from 4.0.2
# 0.36%
$(eval $(call check-gcc-var,-fno-strength-reduce))
OPTIMIZATION += $(CFLAG_-fno-strength-reduce)
endif
-
+endif
# CPU_CFLAGS-y contain options which are not warnings,
# not include or library paths, and not optimizations.
$(eval $(call check-gcc-var,-fomit-frame-pointer))
OPTIMIZATION += $(CFLAG_-fomit-frame-pointer)
-ifeq ($(CONFIG_386)$(CONFIG_486)$(CONFIG_586)$(CONFIG_586MMX),y)
+ifeq ($(CONFIG_386)$(CONFIG_486)$(CONFIG_586),y)
+ # TODO: Change this to a gcc version check. This bug
+ # should be fixed with at least gcc-4.3.
# Non-SSE capable processor.
# NB: this may make SSE insns segfault!
# -O1 -march=pentium3, -Os -msse etc are known to be affected.
# -falign-jumps: reachable only by a jump
# Generic: no alignment at all (smallest code)
GCC_FALIGN=$(call check_gcc,-falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1,-malign-jumps=1 -malign-loops=1)
-ifeq ($(CONFIG_K7),y)
- # Align functions to four bytes, use default for jumps and loops (why?)
- GCC_FALIGN=$(call check_gcc,-falign-functions=4 -falign-labels=1,-malign-functions=4)
-endif
-ifeq ($(CONFIG_CRUSOE),y)
- # Use compiler's default for functions, jumps and loops (why?)
- GCC_FALIGN=$(call check_gcc,-falign-functions=0 -falign-labels=1,-malign-functions=0)
-endif
-ifeq ($(CONFIG_CYRIXIII),y)
- # Use compiler's default for functions, jumps and loops (why?)
- GCC_FALIGN=$(call check_gcc,-falign-functions=0 -falign-labels=1,-malign-functions=0)
-endif
OPTIMIZATION+=$(GCC_FALIGN)
# Putting each function and data object into its own section
CPU_LDFLAGS-y+=-m32
CPU_CFLAGS-y+=-m32
- 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)+=$(call check_gcc,-march=athlon,-march=i686)
- CPU_CFLAGS-$(CONFIG_CRUSOE)+=-march=i686
- 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)
- CPU_CFLAGS-$(CONFIG_NEHEMIAH)+=$(call check_gcc,-march=c3-2,-march=i686)
endif
ifeq ($(TARGET_ARCH),sparc)
CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS32)+=-mips32 -mtune=mips32
CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS32R2)+=-march=mips32r2 -mtune=mips32r2
CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS64)+=-mips64 -mtune=mips32
+ CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS64R2)+=-mips64r2 -mtune=mips64r2
ifeq ($(strip $(ARCH_BIG_ENDIAN)),y)
CPU_LDFLAGS-$(CONFIG_MIPS_N64_ABI)+=-Wl,-melf64btsmip
CPU_LDFLAGS-$(CONFIG_MIPS_O32_ABI)+=-Wl,-melf32btsmip
CPU_LDFLAGS-y += $(CPU_CFLAGS)
endif
+ifeq ($(TARGET_ARCH),arc)
+ CPU_CFLAGS-y += -mlock -mswape
+ CPU_CFLAGS-$(CONFIG_ARC_CPU_700) += -mA7
+ CPU_LDFLAGS-y += $(CPU_CFLAGS) -marclinux
+endif
+
$(eval $(call check-gcc-var,$(PIEFLAG_NAME)))
PIEFLAG := $(CFLAG_$(PIEFLAG_NAME))
ifeq ($(PIEFLAG),)
# well as the LD PIE flag (below) because we can't rely on
# gcc passing -pie if we used -fPIE. We need to directly use -pie
# instead of -Wl,-pie as gcc picks up the wrong startfile/endfile
-$(eval $(call cache-output-var,LDPIEFLAG,$(LD) --help 2>/dev/null | grep -q -- -pie && echo "-pie"))
+$(eval $(call cache-output-var,LDPIEFLAG,$(CC) -Wl$(comma)--help 2>/dev/null | grep -q -- -pie && echo "-pie"))
# Check for --as-needed support in linker
ifndef LD_FLAG_ASNEEDED
-_LD_FLAG_ASNEEDED:=$(shell $(LD) --help 2>/dev/null | grep -- --as-needed)
+_LD_FLAG_ASNEEDED:=$(shell $(CC) -Wl,--help 2>/dev/null | grep -- --as-needed)
ifneq ($(_LD_FLAG_ASNEEDED),)
export LD_FLAG_ASNEEDED:=--as-needed
endif
# Check for AS_NEEDED support in linker script (binutils>=2.16.1 has it)
ifndef ASNEEDED
-export ASNEEDED:=$(shell $(LD) --help 2>/dev/null | grep -q -- --as-needed && echo "AS_NEEDED ( $(UCLIBC_LDSO) )" || echo "$(UCLIBC_LDSO)")
+export ASNEEDED:=$(shell $(CC) -Wl,--help 2>/dev/null | grep -q -- --as-needed && echo "AS_NEEDED ( $(UCLIBC_LDSO) )" || echo "$(UCLIBC_LDSO)")
# Only used in installed libc.so linker script
ifeq ($(UCLIBC_HAS_BACKTRACE),y)
else
UBACKTRACE_FULL_NAME := $(UBACKTRACE_DSO)
endif
-export UBACKTRACE_ASNEEDED:=$(shell $(LD) --help 2>/dev/null | grep -q -- --as-needed && \
+export UBACKTRACE_ASNEEDED:=$(shell $(CC) -Wl,--help 2>/dev/null | grep -q -- --as-needed && \
echo "GROUP ( AS_NEEDED ( $(UBACKTRACE_FULL_NAME) ) )" || \
echo "GROUP ( $(UBACKTRACE_FULL_NAME) )")
else
SSP_CFLAGS := $(SSP_DISABLE_FLAGS)
endif
-$(eval $(call check-gcc-var,-nostdlib))
-
# Collect all CFLAGS components
CFLAGS := $(XWARNINGS) $(CPU_CFLAGS) $(SSP_CFLAGS) \
-nostdinc -I$(top_builddir)include \
$(eval $(call check-ld-var,--warn-once))
$(eval $(call check-ld-var,--sort-common))
$(eval $(call check-ld-var,--discard-all))
-LDFLAGS_NOSTRIP:=$(CPU_LDFLAGS-y) -shared \
+LDFLAGS_NOSTRIP:=$(LDFLAG-fuse-ld) $(CPU_LDFLAGS-y) -shared \
-Wl,--warn-common $(CFLAG_-Wl--warn-once) -Wl,-z,combreloc
# binutils-2.16.1 warns about ignored sections, 2.16.91.0.3 and newer are ok
#$(eval $(call check-ld-var,--gc-sections))