Some linux systems may use target-prefixed names for binutils. For example on my Exherbo Linux readelf is named as x86_64-pc-linux-gnu-readelf. This leads to errors like:

readelf: createProcess: runInteractiveProcess: exec: does not exist (No such file or directory)

To fix this GHC needs to give ability to configure name of this tool (like SysTools.runSplit and SysTools.runCc) or use libelf-like library.