Had a new known issue: ccache will break the build because we're sym-linking to have our own compiler for host and build systems, but that screws up ccache finding the real compiler.
There is no fix, so the only way to inform the users is to document it: remove ccache.

/trunk/docs/known-issues.txt | 25 21 4 0 +++++++++++++++++++++----
1 file changed, 21 insertions(+), 4 deletions(-)

# ia64 specific config options

config ARCH_ia64

    select ARCH_SUPPORTS_BOTH_ENDIAN

    help

      The ia64 architecture, as defined by:

        http://www.intel.com/design/itanium/arch_spec.htm