multilib: Add support for compiling recipes against multiple ABIs

This patch adds the core multilib class which can be used along with a
parameter specifying the mutlilib to use in BBCLASSEXTEND.

The MLPREFIX variable is added and can be used in cases where its too
difficult to dynmaically work out where a mutltilib prefix is needed
to be added to a variable.

This includes:
  * SHLIBSDIR and PACKAGE_ARCH fixes from Lianhao Lu.
  * PACKAGE_DYNAMIC mapping from Yu Ke
  * PACKAGE_INSTALL mapping from Yu Ke
  * RPROVIDES mapping from Yu Ke
  * TARGET_VENDOR fix from Mark Hatle
  * Ignorning *-native-runtime dependnecies as well as *-native from Yu Ke
  * Map PKG and ALLOW_EMPTY from Dongxiao Xu
  * Ensure RCONFLICTS and PKG field dependencies are remapped (from Dongxiao Xu)
  * Ensure PN and MLPREFIX are set at the same time to ensure consistent BPN values (Yu Ke)

(From OE-Core rev: 5d9453049915db48ec4b5972e12287417ebb61a2)

Signed-off-by: Yu Ke <ke.yu@intel.com>
Signed-off-by: Xu Dongxiao <dongxiao.xu@intel.com>
Signed-off-by: Lianhao Lu <lianhao.lu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 46a9a82198..6e109ecd1e 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -735,3 +735,4 @@ BB_SIGNATURE_HANDLER ?= "basic"
 BB_HASHTASK_WHITELIST ?= "(.*-cross$|.*-native$|.*-cross-initial$|.*-cross-intermediate$|^virtual:native:.*|^virtual:nativesdk:.*)"
 BB_HASHBASE_WHITELIST ?= "TMPDIR FILE PATH PWD BB_TASKHASH BBPATH DL_DIR SSTATE_DIR THISDIR FILESEXTRAPATHS FILE_DIRNAME HOME LOGNAME SHELL TERM USER FILESPATH USERNAME STAGING_DIR_HOST STAGING_DIR_TARGET COREBASE"
 
+MLPREFIX ??= ""