toolchain-scripts.bbclass: Export KCFLAGS to ensure sysroot is provided
When building the U-Boot the lack of a proper sysroot can trigger
following error:
,----
| arm-poky-linux-gnueabi-ld.bfd: cannot find -lgcc
| make[2]: *** [examples/standalone/hello_world] Error 1
| make[1]: *** [examples/standalone] Error 2
| make: *** [examples] Error 2
`----
Guillaume Fournier has posted a very complete analysis of the
problem[1].
1. https://lists.yoctoproject.org/pipermail/meta-freescale/2014-November/011270.html
The use of KCFLAGS makes the build of U-Boot work out of box, now that
it uses the Linux kernel build system.
Reported-by: Guillaume Fournier <gfournier@brioconcept.com>
(From OE-Core rev:
50437f9c187f1a884825a8d1ec12da47a5e58670)
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
