This is with GHC 6.4.1.ghci is not supported on AIX.I recently tried to isntall MissingH with Cabal. I got:# ./setup installInstalling: /usr/local/lib/MissingH-0.12.0 &/usr/local/bin MissingH-0.12.0...Registering MissingH-0.12.0...Reading package info from ".installed-pkg-config" ... done.building GHCi library/usr/local/lib/MissingH-0.12.0/HSMissingH-0.12.0.o...ld:0706-027 The -x flag is ignored.ld: 0706-012 The -- flag is not recognized.ld: 0706-012 The -w flag is not recognized.ld: 0706-012 The -h flag is not recognized.ghc-pkg list does not see the package after this, either.I'm not sure why Cabal seems to think it needs to builda GHCi library, and it's even more concerning thatinvalid flags are being given to ld.