[oe] [PATCH] Reverse the order of OVERRIDES

Khem Raj raj.khem at gmail.com
Fri Oct 15 04:07:53 UTC 2010 

On Thu, Oct 14, 2010 at 8:36 PM, Chris Larson <kergoth at gmail.com> wrote:
> From: Chris Larson <chris_larson at mentor.com>
>
> Given the current implementation of OVERRIDES in bitbake, the variable is
> expected to contain elements in the order least specific to most specific,
> however, our current usage of it does not match that.  As one example, "local"
> is supposed to always be the most specific override, yet currently it's the
> least specific.  As another example, currently the target architecture is seen
> as more specific than the machine, which is also clearly wrong.
>
> It becomes clear that a reversal of the current value will bring us to a more
> sane behavior, and avoids the need for the dual overrides hack mentioned in
> the comments, so clean those up as well.
>
> This also introduces a MACHINE_OVERRIDES variable as a generic mechanism to
> inject overrides elements which are more specific than the distro but less
> specific than the machine, which is where things like MACHINE_CLASS or
> SOC_FAMILY or the like would go.  This variable is *space* separated, to make
> it easier and more convenient to assemble the variable incrementally, and it's
> then translated to : separated when used in OVERRIDES.
>
> Signed-off-by: Chris Larson <chris_larson at mentor.com>

both things look nice to me. We might need to document MACHINE_OVERRIDES though.

Acked-by: Khem Raj <raj.khem at gmail.com>

> ---
>  conf/bitbake.conf                             |   17 +++--------------
>  conf/distro/include/arm-thumb.inc             |    6 +++---
>  conf/distro/micro.conf                        |    6 +++---
>  conf/distro/minimal.conf                      |    5 +++--
>  conf/distro/shr.conf                          |    5 +++--
>  conf/machine/fsg3be.conf                      |    2 +-
>  conf/machine/kixrp435.conf                    |    2 +-
>  conf/machine/nslu2be.conf                     |    2 +-
>  conf/machine/nslu2le.conf                     |    2 +-
>  recipes/binutils/binutils_csl-arm-20050416.bb |    2 +-
>  recipes/binutils/binutils_csl-arm-20050603.bb |    2 +-
>  recipes/eglibc/eglibc-package.bbclass         |    2 +-
>  recipes/glibc/glibc-package.inc               |    2 +-
>  recipes/prelink/prelink_20061027.bb           |    2 +-
>  recipes/prelink/prelink_20071009.bb           |    2 +-
>  recipes/prelink/prelink_20090925.bb           |    2 +-
>  16 files changed, 26 insertions(+), 35 deletions(-)
>
> diff --git a/conf/bitbake.conf b/conf/bitbake.conf
> index 494e14e..c2359dc 100644
> --- a/conf/bitbake.conf
> +++ b/conf/bitbake.conf
> @@ -675,20 +675,9 @@ BUILDCFG_NEEDEDVARS ?= "TARGET_ARCH TARGET_OS"
>
>  # Overrides are processed left to right, so the ones that are named later take precedence.
>  # You generally want them to go from least to most specific.
> -#
> -# This means that an envionment variable named '<foo>_arm' overrides an
> -# environment variable '<foo>' (when ${TARGET_ARCH} is arm).
> -# an environment variable '<foo>_ramses' overrides '<foo>' but doesn't override
> -# '<foo>_arm' when ${MACHINE} is 'ramses'.
> -# If you use combination ie '<foo>_arm_ramses', then '<foo>_arm_ramses' will override
> -# '<foo>_arm' and then '<foo>' will be overriden with that value from '<foo>_arm'.
> -# And finally '<foo>_local' overrides anything, but with lowest priority.
> -#
> -# This works for  functions as well, they are really just environment variables.
> -# Default OVERRIDES to make compilation fail fast in case of build system misconfiguration.
> -OVERRIDES = "local:${MACHINE}:${DISTRO}:${TARGET_OS}:${TARGET_ARCH}:build-${BUILD_OS}:fail-fast:pn-${PN}"
> -# Alternative OVERRIDES definition without "fail fast", usually only for native building and Scratchbox toolchains.
> -#OVERRIDES = "local:${MACHINE}:${DISTRO}:${TARGET_OS}:${TARGET_ARCH}:build-${BUILD_OS}:pn-${PN}"
> +MACHINE_OVERRIDES ?= ""
> +OVERRIDES = "pn-${PN}:fail-fast:build-${BUILD_OS}:${TARGET_ARCH}:${TARGET_OS}:\
> +${DISTRO}:${@':'.join(d.getVar('MACHINE_OVERRIDES', True).split())}:${MACHINE}:local"
>
>  ##################################################################
>  # Include the rest of the config files.
> diff --git a/conf/distro/include/arm-thumb.inc b/conf/distro/include/arm-thumb.inc
> index 36edd4f..75ed978 100644
> --- a/conf/distro/include/arm-thumb.inc
> +++ b/conf/distro/include/arm-thumb.inc
> @@ -16,9 +16,9 @@ THUMB_INTERWORK ?= "no"
>  #    arm system and vice versa.  It is strongly recommended that DISTROs not
>  #    turn this off - the actual cost is very small.
>
> -OVERRIDE_THUMB = "${@['', ':thumb'][bb.data.getVar('ARM_INSTRUCTION_SET', d, 1) == 'thumb']}"
> -OVERRIDE_INTERWORK = "${@['', ':thumb-interwork'][bb.data.getVar('THUMB_INTERWORK', d, 1) == 'yes']}"
> -OVERRIDES_append_arm =. "${OVERRIDE_THUMB}${OVERRIDE_INTERWORK}"
> +OVERRIDE_THUMB = "${@['', 'thumb:'][bb.data.getVar('ARM_INSTRUCTION_SET', d, 1) == 'thumb']}"
> +OVERRIDE_INTERWORK = "${@['', 'thumb-interwork:'][bb.data.getVar('THUMB_INTERWORK', d, 1) == 'yes']}"
> +OVERRIDES_prepend_arm =. "${OVERRIDE_THUMB}${OVERRIDE_INTERWORK}"
>
>  #    Compiler and linker options for application code and kernel code.  These
>  #    options ensure that the compiler has the correct settings for the selected
> diff --git a/conf/distro/micro.conf b/conf/distro/micro.conf
> index 6d396b3..19b5e62 100644
> --- a/conf/distro/micro.conf
> +++ b/conf/distro/micro.conf
> @@ -69,10 +69,10 @@ require conf/distro/include/sane-toolchain.inc
>  require conf/distro/include/arm-thumb.inc
>
>  #############################################################################
> -# OVERRIDES adjusted from bitbake.conf to feature the MACHINE_CLASS
> +# Ensure MACHINE_CLASS is in OVERRIDES
>  #############################################################################
> -OVERRIDES = "local:${MACHINE}:${MACHINE_CLASS}:${DISTRO}:${TARGET_OS}:\
> -${TARGET_ARCH}:build-${BUILD_OS}:fail-fast:pn-${PN}"
> +MACHINE_CLASS ?= ""
> +MACHINE_OVERRIDES += "${MACHINE_CLASS}"
>
>  #############################################################################
>  # PREFERRED VERSIONS
> diff --git a/conf/distro/minimal.conf b/conf/distro/minimal.conf
> index 376ffde..0d32cfe 100644
> --- a/conf/distro/minimal.conf
> +++ b/conf/distro/minimal.conf
> @@ -81,9 +81,10 @@ KERNEL = "kernel26"
>  MACHINE_KERNEL_VERSION = "2.6"
>
>  #############################################################################
> -# OVERWRITES adjusted from bitbake.conf to feature the MACHINE_CLASS
> +# Ensure MACHINE_CLASS is in OVERRIDES
>  #############################################################################
> -OVERRIDES = "local:${MACHINE}:${MACHINE_CLASS}:${DISTRO}:${TARGET_OS}:${TARGET_ARCH}:build-${BUILD_OS}:fail-fast:pn-${PN}"
> +MACHINE_CLASS ?= ""
> +MACHINE_OVERRIDES += "${MACHINE_CLASS}"
>
>  #############################################################################
>  # TOOLCHAIN
> diff --git a/conf/distro/shr.conf b/conf/distro/shr.conf
> index ade8cba..74e3fe9 100644
> --- a/conf/distro/shr.conf
> +++ b/conf/distro/shr.conf
> @@ -151,9 +151,10 @@ KERNEL = "kernel26"
>  MACHINE_KERNEL_VERSION = "2.6"
>
>  #############################################################################
> -# OVERWRITES adjusted from bitbake.conf to feature the MACHINE_CLASS
> +# Ensure MACHINE_CLASS is in OVERRIDES
>  #############################################################################
> -OVERRIDES = "local:${MACHINE}:${MACHINE_CLASS}:${DISTRO}:${TARGET_OS}:${TARGET_ARCH}:build-${BUILD_OS}:fail-fast:pn-${PN}"
> +MACHINE_CLASS ?= ""
> +MACHINE_OVERRIDES += "${MACHINE_CLASS}"
>
>  #############################################################################
>  # TOOLCHAIN
> diff --git a/conf/machine/fsg3be.conf b/conf/machine/fsg3be.conf
> index a2ca95b..c5ddc25 100644
> --- a/conf/machine/fsg3be.conf
> +++ b/conf/machine/fsg3be.conf
> @@ -8,7 +8,7 @@ PACKAGE_EXTRA_ARCHS = "ixp4xxbe"
>
>  MACHINE_ARCH = "ixp4xxbe"
>
> -OVERRIDES = "local:${MACHINE}:ixp4xxbe:ixp4xx:${DISTRO}:${TARGET_OS}:${TARGET_ARCH}:build-${BUILD_OS}:fail-fast:pn-${PN}"
> +MACHINE_OVERRIDES += "ixp4xx ixp4xxbe"
>
>  # Match the vendor's latest kernel
>  PREFERRED_PROVIDER_virtual/kernel ?= "fsg3-kernel"
> diff --git a/conf/machine/kixrp435.conf b/conf/machine/kixrp435.conf
> index 8259127..b4a2fa6 100644
> --- a/conf/machine/kixrp435.conf
> +++ b/conf/machine/kixrp435.conf
> @@ -7,7 +7,7 @@ TARGET_ARCH = "arm"
>  # Note: armv4 armv4t armv5te will be added by tune-xscale.inc automatically.
>  PACKAGE_EXTRA_ARCHS = "armv5e ixp4xxle"
>
> -OVERRIDES = "local:${MACHINE}:nslu2:ixp4xx:${DISTRO}:${TARGET_OS}:${TARGET_ARCH}:build-${BUILD_OS}:fail-fast:pn-${PN}"
> +MACHINE_OVERRIDES += "nslu2 ixp4xx"
>
>  PREFERRED_PROVIDER_virtual/kernel = "linux"
>  PREFERRED_VERSION_linux = "2.6.30"
> diff --git a/conf/machine/nslu2be.conf b/conf/machine/nslu2be.conf
> index 9bc92f1..88e6ed2 100644
> --- a/conf/machine/nslu2be.conf
> +++ b/conf/machine/nslu2be.conf
> @@ -7,7 +7,7 @@ TARGET_ARCH = "armeb"
>  # Note: armv4b armv4tb armv5teb will be added by tune-xscale.inc automatically.
>  PACKAGE_EXTRA_ARCHS = "armv5eb ixp4xxbe"
>
> -OVERRIDES = "local:${MACHINE}:nslu2:ixp4xx:${DISTRO}:${TARGET_OS}:${TARGET_ARCH}:build-${BUILD_OS}:fail-fast:pn-${PN}"
> +MACHINE_OVERRIDES += "nslu2 ixp4xx"
>
>  ROOT_FLASH_SIZE ?= "6"
>
> diff --git a/conf/machine/nslu2le.conf b/conf/machine/nslu2le.conf
> index 62e47cb..edd0d94 100644
> --- a/conf/machine/nslu2le.conf
> +++ b/conf/machine/nslu2le.conf
> @@ -7,7 +7,7 @@ TARGET_ARCH = "arm"
>  # Note: armv4 armv4t armv5te will be added by tune-xscale.inc automatically.
>  PACKAGE_EXTRA_ARCHS = "armv5e ixp4xxle"
>
> -OVERRIDES = "local:${MACHINE}:nslu2:ixp4xx:${DISTRO}:${TARGET_OS}:${TARGET_ARCH}:build-${BUILD_OS}:fail-fast:pn-${PN}"
> +MACHINE_OVERRIDES += "nslu2 ixp4xx"
>
>  ROOT_FLASH_SIZE ?= "6"
>
> diff --git a/recipes/binutils/binutils_csl-arm-20050416.bb b/recipes/binutils/binutils_csl-arm-20050416.bb
> index ad45438..71803d1 100644
> --- a/recipes/binutils/binutils_csl-arm-20050416.bb
> +++ b/recipes/binutils/binutils_csl-arm-20050416.bb
> @@ -7,7 +7,7 @@ LICENSE = "GPL"
>  FILESDIR = "${@os.path.dirname(bb.data.getVar('FILE',d,1))}/binutils-cvs"
>  PV = "2.15.99+csl-arm+cvs20050416"
>  PR = "r3"
> -OVERRIDES_append = ":${TARGET_ARCH}-${TARGET_OS}"
> +OVERRIDES_prepend = "${TARGET_ARCH}-${TARGET_OS}:"
>  DEFAULT_PREFERENCE = "-1"
>  DEFAULT_PREFERENCE_arm-linux = "-1"
>  DEFAULT_PREFERENCE_arm-linuxeabi = "-1"
> diff --git a/recipes/binutils/binutils_csl-arm-20050603.bb b/recipes/binutils/binutils_csl-arm-20050603.bb
> index 595cb98..50e8677 100644
> --- a/recipes/binutils/binutils_csl-arm-20050603.bb
> +++ b/recipes/binutils/binutils_csl-arm-20050603.bb
> @@ -7,7 +7,7 @@ LICENSE = "GPL"
>  FILESDIR = "${@os.path.dirname(bb.data.getVar('FILE',d,1))}/binutils-cvs"
>  PV = "2.15.99+csl-arm+cvs20050603"
>  PR = "r3"
> -OVERRIDES_append = ":${TARGET_ARCH}-${TARGET_OS}"
> +OVERRIDES_prepend = "${TARGET_ARCH}-${TARGET_OS}:"
>  DEFAULT_PREFERENCE = "-1"
>  #DEFAULT_PREFERENCE_arm-linux = "1"
>  #DEFAULT_PREFERENCE_arm-linuxeabi = "1"
> diff --git a/recipes/eglibc/eglibc-package.bbclass b/recipes/eglibc/eglibc-package.bbclass
> index dbca1ab..c802bd5 100644
> --- a/recipes/eglibc/eglibc-package.bbclass
> +++ b/recipes/eglibc/eglibc-package.bbclass
> @@ -116,7 +116,7 @@ def get_eglibc_fpu_setting(bb, d):
>  EXTRA_OECONF += "${@get_eglibc_fpu_setting(bb, d)}"
>  EXTRA_OEMAKE += "rootsbindir=${base_sbindir}"
>
> -OVERRIDES_append = ":${TARGET_ARCH}-${TARGET_OS}"
> +OVERRIDES_prepend = "${TARGET_ARCH}-${TARGET_OS}:"
>
>  do_configure_prepend() {
>         sed -e "s#@BASH@#/bin/sh#" -i ${S}/elf/ldd.bash.in
> diff --git a/recipes/glibc/glibc-package.inc b/recipes/glibc/glibc-package.inc
> index 0b263bb..8cd8564 100644
> --- a/recipes/glibc/glibc-package.inc
> +++ b/recipes/glibc/glibc-package.inc
> @@ -44,7 +44,7 @@ def get_glibc_fpu_setting(bb, d):
>  EXTRA_OECONF += "${@get_glibc_fpu_setting(bb, d)}"
>  EXTRA_OEMAKE += "rootsbindir=${base_sbindir}"
>
> -OVERRIDES_append = ":${TARGET_ARCH}-${TARGET_OS}"
> +OVERRIDES_prepend = "${TARGET_ARCH}-${TARGET_OS}:"
>
>  do_install() {
>        oe_runmake install_root=${D} install
> diff --git a/recipes/prelink/prelink_20061027.bb b/recipes/prelink/prelink_20061027.bb
> index ad2faf5..552117b 100644
> --- a/recipes/prelink/prelink_20061027.bb
> +++ b/recipes/prelink/prelink_20061027.bb
> @@ -12,7 +12,7 @@ SRC_URI = "${DEBIAN_MIRROR}/main/p/prelink/prelink_0.0.${PV}.orig.tar.gz \
>            file://prelink.default"
>
>  TARGET_OS_ORIG := "${TARGET_OS}"
> -OVERRIDES_append = ":${TARGET_OS_ORIG}"
> +OVERRIDES_prepend = "${TARGET_OS_ORIG}:"
>  SRC_URI_append_linux-gnueabi = " file://arm_eabi.patch"
>
>  S = "${WORKDIR}/prelink-0.0.${PV}"
> diff --git a/recipes/prelink/prelink_20071009.bb b/recipes/prelink/prelink_20071009.bb
> index faf930c..e2ab3fb 100644
> --- a/recipes/prelink/prelink_20071009.bb
> +++ b/recipes/prelink/prelink_20071009.bb
> @@ -12,7 +12,7 @@ SRC_URI = "${DEBIAN_MIRROR}/main/p/prelink/prelink_0.0.${PV}.orig.tar.gz \
>            file://prelink.default"
>
>  TARGET_OS_ORIG := "${TARGET_OS}"
> -OVERRIDES_append = ":${TARGET_OS_ORIG}"
> +OVERRIDES_prepend = "${TARGET_OS_ORIG}:"
>  SRC_URI_append_linux-gnueabi = " file://arm_eabi.patch"
>
>  S = "${WORKDIR}/prelink-0.0.${PV}"
> diff --git a/recipes/prelink/prelink_20090925.bb b/recipes/prelink/prelink_20090925.bb
> index 4c83402..5b247b6 100644
> --- a/recipes/prelink/prelink_20090925.bb
> +++ b/recipes/prelink/prelink_20090925.bb
> @@ -12,7 +12,7 @@ SRC_URI = "${DEBIAN_MIRROR}/main/p/prelink/prelink_0.0.${PV}.orig.tar.gz \
>            file://prelink.default"
>
>  #TARGET_OS_ORIG := "${TARGET_OS}"
> -#OVERRIDES_append = ":${TARGET_OS_ORIG}"
> +#OVERRIDES_prepend = "${TARGET_OS_ORIG}:"
>  #SRC_URI_append_linux-gnueabi = " file://arm_eabi.patch"
>
>  S = "${WORKDIR}/prelink-0.0.${PV}"
> --
> 1.7.2.3
>
>
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