bitbake.conf: set READELF for cross compilation

In the case of using an external toolchain that supports multilib
compilation with a single binary, TARGET_PREFIX is the same for both main
and multilib abis. Without READELF exported, python3 assumes it is
either the readelf for ${BUILD_SYS}-readelf. Exporting cross readelf
fixes the build issue.

checking LDLIBRARY... libpython$(LDVERSION).so
checking for i586-montavistamllib32-linux-ranlib...
x86_64-montavista-linux-ranlib
checking for i586-montavistamllib32-linux-ar...
x86_64-montavista-linux-ar
checking for i586-montavistamllib32-linux-readelf... no
checking for readelf... readelf
configure: WARNING: using cross tools not prefixed with host triplet

(From OE-Core rev: 3442ee423813d547be7899a25ea31efe719e662f)

Signed-off-by: Jeremy Puhlman <jpuhlman@mvista.com>
Signed-off-by: Ross Burton <ross.burton@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 900d2fe259..c32a3f8a66 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -471,6 +471,7 @@ export OBJCOPY = "${HOST_PREFIX}objcopy"
 export OBJDUMP = "${HOST_PREFIX}objdump"
 export STRINGS = "${HOST_PREFIX}strings"
 export NM = "${HOST_PREFIX}nm"
+export READELF = "${HOST_PREFIX}readelf"
 PYTHON = "${@sys.executable}"
 
 export BUILD_CC = "${CCACHE}${BUILD_PREFIX}gcc ${BUILD_CC_ARCH}"