[Thomas:
- Don't explicitly pass CC_FOR_BUILD and CFLAGS_FOR_BUILD, those are
already part of the default environment passed by the
autotools-package infrastructure.
- Explicitly disable Lua and LuaJIT support to avoid mis-detection of
host installation.
- Explicitly handle the optional support of libxml2, OpenSSL and
zlib. Especially, the absence of explicit handling for libxml2 was
causing a build failure due to the host libxml2 being detected.
- Remove /usr/manual and /usr/build from the target. This saves 20+
MB of target space.]
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>