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 <[email protected]>

---

meta/classes/base.bbclass +0 -0

index 02e1ff5..a984eae 100644
@@ -1,4 +1,5 @@

 BB_DEFAULT_TASK ?= "build"
+CLASSOVERRIDE ?= "class-target"

 inherit patch
 inherit staging

meta/classes/cross-canadian.bbclass +0 -0

index bbf8f16..ed53118 100644
@@ -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"

meta/classes/cross-canadian.bbclass +1 -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}"

 #

meta/classes/cross.bbclass +0 -0

index 8da3048..e998307 100644
@@ -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 = ""

meta/classes/crosssdk.bbclass +0 -0

index 67df236..93aba70 100644
@@ -1,5 +1,6 @@

 inherit cross

+CLASSOVERRIDE = "class-crosssdk"
 PACKAGE_ARCH = "${SDK_ARCH}"
 python () {

       # set TUNE_PKGARCH to SDK_ARCH

meta/classes/native.bbclass +0 -0

index ffab971..bca48d4 100644
@@ -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:"

meta/classes/nativesdk.bbclass +0 -0

index 9e20834..a58fce2 100644
@@ -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

meta/conf/bitbake.conf +2 -1

index 91fe070..9f4e4d4 100644
@@ -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"

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