# Originally brought to you by the Angstrom Distribution ############################################################################# # TOOLCHAIN VERSION SETTINGS ############################################################################# # Base line versions, good for most things PREFERRED_GCC_VERSION ?= "4.4.4" PREFERRED_BINUTILS ?= "2.20.1" # Prefer glibc 2.6 and uclibc 0.9.30, these have had the most testing. PREFERRED_VERSION_glibc ?= "2.10.1" PREFERRED_VERSION_glibc-initial ?= "2.10.1" PREFERRED_VERSION_eglibc ?= "2.11" PREFERRED_VERSION_eglibc-initial ?= "2.11" PREFERRED_VERSION_uclibc ?= "0.9.30.1" PREFERRED_VERSION_uclibc-initial ?= "0.9.30.1" # Some systems need a special gcc version PREFERRED_GCC_VERSION_486sx ?= "4.3.2" PREFERRED_GCC_VERSION_avr32 ?= "4.2.2" PREFERRED_GCC_VERSION_armv7a ?= "4.4.1" PREFERRED_GCC_VERSION_bfin ?= "4.1.2" PREFERRED_GCC_VERSION_ppc405 ?= "4.4.1" PREFERRED_GCC_VERSION_xilinx-ml403 ?= "4.1.1" PREFERRED_GCC_VERSION_xilinx-ml403 ?= "4.1.1" # This is unrelated to the kernel version, but glibc and some userspaceapps require a recent version to build against PREFERRED_VERSION_linux-libc-headers ?= "2.6.31" # Uncomment this if want need to build an armv7a kernel with CSL toolchain (<2.6.27 don't boot with mainline gcc) #KERNEL_CCSUFFIX_armv7a= "-4.2.1+csl-arm-2007q3-53" # Binutils PREFERRED_VERSION_binutils ?= "${PREFERRED_BINUTILS}" PREFERRED_VERSION_binutils-cross ?= "${PREFERRED_BINUTILS}" PREFERRED_VERSION_binutils-cross-sdk ?= "${PREFERRED_BINUTILS}" # Avr32 only has patches for binutils 2.17 in OE PREFERRED_VERSION_binutils_avr32 = "2.17" PREFERRED_VERSION_binutils-cross_avr32 = "2.17" PREFERRED_VERSION_binutils-cross-sdk_avr32 = "2.17" # Compiler versions PREFERRED_VERSION_gcc ?= "${PREFERRED_GCC_VERSION}" PREFERRED_VERSION_gcc-cross ?= "${PREFERRED_GCC_VERSION}" PREFERRED_VERSION_gcc-cross-sdk ?= "${PREFERRED_GCC_VERSION}" PREFERRED_VERSION_gcc-cross-initial ?= "${PREFERRED_GCC_VERSION}" PREFERRED_VERSION_gcc-cross-intermediate ?= "${PREFERRED_GCC_VERSION}" # Compiler selection PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}binutils = "binutils-cross" PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}gcc-initial = "gcc-cross-initial" PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}gcc-intermediate = "gcc-cross-intermediate" PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}gcc = "gcc-cross" PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}g++ = "gcc-cross" # Others PREFERRED_PROVIDER_linux-libc-headers = "linux-libc-headers" ############################################################################# # TOOLCHAIN CUSTOMIZATION ############################################################################# # Branding TARGET_VENDOR = "-oe" # Add FEED_ARCH to the overrides list so that we can override the # ARM_INSTRUCTION_SET like below OVERRIDES .= ":${FEED_ARCH}" # ARM920T and up can use thumb mode to decrease binary size at the expense of speed # (the complete story is a bit more nuanced due to cache starvation) # Minimal turns on thumb for armv4t machine according to this RFC: # http://lists.linuxtogo.org/pipermail/angstrom-distro-devel/2008-October/002714.html # We can't set ARM_INSTRUCTION_SET_ directly since that will un-overridable in recipes like gcc PREFERRED_ARM_INSTRUCTION_SET_armv4t = "thumb" PREFERRED_ARM_INSTRUCTION_SET_armv5te = "thumb" PREFERRED_ARM_INSTRUCTION_SET_armv5teb = "thumb" PREFERRED_ARM_INSTRUCTION_SET ?= "arm" ARM_INSTRUCTION_SET = "${PREFERRED_ARM_INSTRUCTION_SET}" # "arm" "thumb" # The instruction set the compiler should use when generating application # code. The kernel is always compiled with arm code at present. arm code # is the original 32 bit ARM instruction set, thumb code is the 16 bit # encoded RISC sub-set. Thumb code is smaller (maybe 70% of the ARM size) # but requires more instructions (140% for 70% smaller code) so may be # slower. THUMB_INTERWORK = "yes" # "yes" "no" # Whether to compile with code to allow interworking between the two # instruction sets. This allows thumb code to be executed on a primarily # arm system and vice versa. It is strongly recommended that DISTROs not # turn this off - the actual cost is very small. # We don't want to keep OABI compat ARM_KEEP_OABI = "0" # ARM EABI is softfloat by default, but let's make sure :) # make it overridable for platforms with FPU, like ep93xx or i.mx31 TARGET_FPU_arm ?= "soft" TARGET_FPU_armeb ?= "soft" TARGET_FPU_ixp4xx ?= "soft" TARGET_FPU_ppc405 ?= "soft" TARGET_FPU_armv6 ?= "hard" TARGET_FPU_armv6-novfp ?= "soft" TARGET_FPU_armv7a ?= "hard" TARGET_FPU_ppc603e ?= "hard" # webkit-gtk and cairo have alignment issues with double instructions on armv5 so # disable them here. TODO: This knowledge should rather be encoded in the actual # recipes! TARGET_CC_ARCH_pn-webkit-gtk_armv5te = "-march=armv4t" TARGET_CC_ARCH_pn-cairo_armv5te = "-march=armv4t" ############################################################################# # C LIBRARY SETTINGS ############################################################################# # Can be "glibc", "eglibc" or "uclibc" LIBC ?= "eglibc" require conf/distro/include/${LIBC}.inc PSTAGE_EXTRAPATH = "${LIBC}" require conf/distro/include/sane-toolchain-${LIBC}.inc # Generate locales on the buildsystem instead of on the target. Speeds up first boot, set to "1" to enable PREFERRED_PROVIDER_qemu-native = "qemu-native" ENABLE_BINARY_LOCALE_GENERATION ?= "1" # We only want to build UTF8 locales LOCALE_UTF8_ONLY = "1" # Qemu doesn't like armv6/eabi/vfp ENABLE_BINARY_LOCALE_GENERATION_armv6 = "0" ENABLE_BINARY_LOCALE_GENERATION_armv6-novfp = "0" ENABLE_BINARY_LOCALE_GENERATION_armv7a = "0" #qemu has taken a dislike to armeb as well ENABLE_BINARY_LOCALE_GENERATION_armeb = "0" def detect_arm_abi (d): import bb if bb.data.getVar('DISTRO_FEATURES',d) is None: if bb.data.getVar('TARGET_ARCH', d, 1) in [ 'arm', 'armeb' ]: return "oabi" else: return "" if bb.data.getVar('TARGET_ARCH', d, 1) in [ 'arm', 'armeb' ]: if 'eabi' in bb.data.getVar('DISTRO_FEATURES',d).split(): return "eabi" return "oabi" return "" def compute_os_portion_of_target_triplet (d): import bb arm_eabi_supporting_arches = "armv6 armv6-novfp \ armv5te iwmmxt armv7a armv7 armv5teb armv4t" ppc_spe_supporting_arches = "ppce500v2 ppce500" gnu_suffix = "" if bb.data.getVar('LIBC', d, 1) == "uclibc": libc_suffix = "uclibc" else: libc_suffix = "" if bb.data.getVar('TARGET_ARCH',d,1) in ['bfin']: if libc_suffix is not "uclibc": bb.fatal("bfin is not supported on glibc/eglibc. Please choose uclibc") else: os_suffix = "uclinux" else: os_suffix = "linux" bparch = bb.data.getVar('BASE_PACKAGE_ARCH', d,1) if bb.data.getVar('DISTRO_FEATURES',d,1) is not None and \ bparch is not None: if 'eabi' in bb.data.getVar('DISTRO_FEATURES',d,1).split() and \ bb.data.getVar('TARGET_ARCH', d, 1) in [ 'arm', 'armeb' ]: if bparch not in arm_eabi_supporting_arches.split(): bb.fatal("DISTRO requested EABI but selected machine does not support EABI") abi_suffix = "" else: if libc_suffix is not "uclibc": gnu_suffix = "gnu" abi_suffix = "eabi" elif bparch in ppc_spe_supporting_arches.split(): if libc_suffix is not "uclibc": gnu_suffix = "gnu" abi_suffix = "spe" else: abi_suffix = "" else: bb.note("DISTRO_FEATURES is not set abi suffix not set") abi_suffix = "" if libc_suffix is not "" or abi_suffix is not "": return os_suffix + "-" + libc_suffix + gnu_suffix + abi_suffix else: return os_suffix # This is needed to get a correct PACKAGE_ARCH for packages that have PACKAGE_ARCH = ${MACHINE_ARCH} ARM_ABI = "${@detect_arm_abi(d)}" TARGET_OS = "${@compute_os_portion_of_target_triplet(d)}" include conf/distro/include/sane-toolchain-${ARM_ABI}.inc