ghc 7.8.4 on arm

when compiling i get the warning

/usr/bin/ld.gold: warning: cannot scan executable section 1 of ..... transformers-04.3.0a... for Cortex-A8 erratum because it has no mapping symbols. 

there are some informations on the web on the cortex-a8 erratum, but i cannot see how i could apply them. should the compiler be recompiled? i installed from the debian distribution. the hardware is a cubietruck. i observe that compilation, especially the phase of preparing the configuration in cabal takes very long - perhaps this is related to this problem. the resulting code is ok and runs with expected speed.

thank you for producing a full ghc for arm! andrew