klibc: klcc: consider --sysroot option and override gcc-cross encoded sysroot
For the recipes built with klcc-cross it is necessary to
pass --sysroot otherwise we default to the one encoded in gcc-cross which
actually is the 'first one' built.
The issue was revealed when building for armv4 after having built for armv5te:
the produced binaries did contain Illegal Instruction (bx lr).
Use ${TOOLCHAIN_OPTIONS} variable to specify --sysroot=${STAGING_DIR_TARGET}
(From meta-openembedded rev:
0a67b9f3fd164b808c66286ff0435c65421e5352)
Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>