If I use the gold linker with 7.8.1rc2 (RHEL bindist), anything using network in build-depends - even if it's not used in the code - fails to build with: libHSunix-2.7.0.1-ghc7.8.0.20140228.so: error: undefined reference to 'sem_unlink' libHSunix-2.7.0.1-ghc7.8.0.20140228.so: error: undefined reference to 'sem_open' libHSunix-2.7.0.1-ghc7.8.0.20140228.so: error: undefined reference to 'sem_wait' libHSunix-2.7.0.1-ghc7.8.0.20140228.so: error: undefined reference to 'sem_getvalue' libHSunix-2.7.0.1-ghc7.8.0.20140228.so: error: undefined reference to 'sem_close' libHSunix-2.7.0.1-ghc7.8.0.20140228.so: error: undefined reference to 'sem_post' libHSunix-2.7.0.1-ghc7.8.0.20140228.so: error: undefined reference to 'sem_trywait' (I only have shared libraries on this machine.) -- View this message in context: http://haskell.1045720.n5.nabble.com/Problem-with-gold-linker-and-7-8-1rc2-t... Sent from the Haskell - Glasgow-haskell-users mailing list archive at Nabble.com.