classes: Add recipe class to overrides

[This is a tweaked version of one of Khem's patches. The idea here would
be to deprecate and ultimately remove the virtclass-native and
virtclass-nativesdk overrides]

We have currently no override to detect a recipe being build cross, crosssdk
or for target at times we can use virtclass-native and virtclass-nativesdk to
override stuff in recipes but we dont have way to modify a variables
based on recipe type always.

This patch adds in such an override and in particular makes a target override
class available.

With this change now we can say:

EXTRA_OECONF_class-target = "...."
EXTRA_OECONF_class-native = "..."
EXTRA_OECONF_class-nativesdk = "..."
EXTRA_OECONF_class-crosssdk= "..."

Based of an original patch by Khem Raj

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---

On Thu, Apr 26, 2012 at 6:45 AM, Richard Purdie
<richard.purdie@linuxfoundation.org> wrote:
> [This is a tweaked version of one of Khem's patches. The idea here would
> be to deprecate and ultimately remove the virtclass-native and
> virtclass-nativesdk overrides]
>
> We have currently no override to detect a recipe being build cross, crosssdk
> or for target at times we can use virtclass-native and virtclass-nativesdk to
> override stuff in recipes but we dont have way to modify a variables
> based on recipe type always.
>
> This patch adds in such an override and in particular makes a target override
> class available.
>
> With this change now we can say:
>
> EXTRA_OECONF_class-target = "...."
> EXTRA_OECONF_class-native = "..."
> EXTRA_OECONF_class-nativesdk = "..."
> EXTRA_OECONF_class-crosssdk= "..."
>
> Based of an original patch by Khem Raj
>
> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Looks ok to me.

> ---
> diff --git a/meta/classes/base.bbclass b/meta/classes/base.bbclass
> index 02e1ff5..a984eae 100644
> --- a/meta/classes/base.bbclass
> +++ b/meta/classes/base.bbclass
> @@ -1,4 +1,5 @@
>  BB_DEFAULT_TASK ?= "build"
> +CLASSOVERRIDE ?= "class-target"
>
>  inherit patch
>  inherit staging
> diff --git a/meta/classes/cross-canadian.bbclass b/meta/classes/cross-canadian.bbclass
> index bbf8f16..ed53118 100644
> --- a/meta/classes/cross-canadian.bbclass
> +++ b/meta/classes/cross-canadian.bbclass
> @@ -8,7 +8,7 @@
>  # SDK packages are built either explicitly by the user,
>  # or indirectly via dependency.  No need to be in 'world'.
>  EXCLUDE_FROM_WORLD = "1"
> -
> +CLASSOVERRIDE = "class-cross-canadian"
>  STAGING_BINDIR_TOOLCHAIN = "${STAGING_DIR_NATIVE}${bindir_native}/${SDK_ARCH}${SDK_VENDOR}-${SDK_OS}:${STAGING_DIR_NATIVE}${bindir_native}/${TUNE_PKGARCH}${TARGET_VENDOR}-${TARGET_OS}"
>
>  #
> diff --git a/meta/classes/cross.bbclass b/meta/classes/cross.bbclass
> index 8da3048..e998307 100644
> --- a/meta/classes/cross.bbclass
> +++ b/meta/classes/cross.bbclass
> @@ -4,6 +4,7 @@ inherit relocatable
>  # no need for them to be a direct target of 'world'
>  EXCLUDE_FROM_WORLD = "1"
>
> +CLASSOVERRIDE = "class-cross"
>  PACKAGES = ""
>  PACKAGES_DYNAMIC = ""
>  PACKAGES_DYNAMIC_virtclass-native = ""
> diff --git a/meta/classes/crosssdk.bbclass b/meta/classes/crosssdk.bbclass
> index 67df236..93aba70 100644
> --- a/meta/classes/crosssdk.bbclass
> +++ b/meta/classes/crosssdk.bbclass
> @@ -1,5 +1,6 @@
>  inherit cross
>
> +CLASSOVERRIDE = "class-crosssdk"
>  PACKAGE_ARCH = "${SDK_ARCH}"
>  python () {
>        # set TUNE_PKGARCH to SDK_ARCH
> diff --git a/meta/classes/native.bbclass b/meta/classes/native.bbclass
> index ffab971..bca48d4 100644
> --- a/meta/classes/native.bbclass
> +++ b/meta/classes/native.bbclass
> @@ -97,6 +97,7 @@ PKG_CONFIG_SYSROOT_DIR = ""
>
>  # we dont want libc-uclibc or libc-glibc to kick in for native recipes
>  LIBCOVERRIDE = ""
> +CLASSOVERRIDE = "class-native"
>
>  PATH =. "${COREBASE}/scripts/native-intercept:"
>
> diff --git a/meta/classes/nativesdk.bbclass b/meta/classes/nativesdk.bbclass
> index 9e20834..a58fce2 100644
> --- a/meta/classes/nativesdk.bbclass
> +++ b/meta/classes/nativesdk.bbclass
> @@ -8,6 +8,7 @@ STAGING_BINDIR_TOOLCHAIN = "${STAGING_DIR_NATIVE}${bindir_native}/${SDK_ARCH}${S
>
>  # we dont want libc-uclibc or libc-glibc to kick in for nativesdk recipes
>  LIBCOVERRIDE = ""
> +CLASSOVERRIDE = "class-nativesdk"
>
>  #
>  # Update PACKAGE_ARCH and PACKAGE_ARCHS
> diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
> index 91fe070..9f4e4d4 100644
> --- a/meta/conf/bitbake.conf
> +++ b/meta/conf/bitbake.conf
> @@ -637,7 +637,8 @@ AUTO_LIBNAME_PKGS = "${PACKAGES}"
>  #
>  # This works for  functions as well, they are really just environment variables.
>  # Default OVERRIDES to make compilation fail fast in case of build system misconfiguration.
> -OVERRIDES = "${TARGET_OS}:${TRANSLATED_TARGET_ARCH}:build-${BUILD_OS}:pn-${PN}:${MACHINEOVERRIDES}:${DISTROOVERRIDES}:forcevariable"
> +OVERRIDES = "${TARGET_OS}:${TRANSLATED_TARGET_ARCH}:build-${BUILD_OS}:pn-${PN}:${MACHINEOVERRIDES}:${DISTROOVERRIDES}:${CLASSOVERRIDE}:forcevariable"
> +CLASSOVERRIDE ?= "class-target"
>  DISTROOVERRIDES ?= "${@d.getVar('DISTRO', True) or ''}"
>  MACHINEOVERRIDES ?= "${MACHINE}"
>  MACHINEOVERRIDES[vardepsexclude] = "MACHINE"
>
>
>
> _______________________________________________
> Openembedded-core mailing list
> Openembedded-core@lists.openembedded.org
> http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core