Hi, I'm having trouble making a HPC build of a Yesod application. It fails with: /usr/bin/ld: dist/build/StreamReading/Config.dyn_o: relocation R_X86_64_PC32 against undefined symbol `_hpc_tickboxes_tracszmenterprisezm0zi0zi0_Settings_hpc' can not be used when making a shared object; recompile with -fPIC I've narrowed it down to a call to ghc and posted the output in all its gory detail at http://lpaste.net/116872 if that's any help. Of note is that dist/build/Settings.dyn_o is unexpectedly missing from the list of parameters to the last call to gcc, and the missing symbol is defined in the same. There are, in fact, quite a number of missing .dyn_o files in that list. Slightly weirdly, when I run the same command line again, it seems to work. At least, there are no errors reported and the exit code is 0. Any ideas? Cheers, David