#910: --make should have a -j flag for parallel building -------------------------------------+------------------------------------ Reporter: igloo | Owner: Type: feature request | Status: patch Priority: normal | Milestone: _|_ Component: Compiler | Version: 6.4.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: N/A | Blocked By: 8184 Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by rrnewton): Have you tested `cabal -j` on this branch? They *should* compose fine, and I'd love to see what kind of speedup one can get installing the Haskell Platform packages. Unfortunately, right now I get a whole bunch of undefined reference errors when I try something like this: time cabal-1.18.0 install -j30 --disable-library-profiling --disable- documentation HUnit --reinstall Btw, I see the same problem with cabal 1.16.0.2. But taking away the -j30 makes it work. I do NOT have the same problem on master (8c99e698476291c) presently, nor on earlier versions of HEAD from 2013.08.04. (Yet, this might have nothing to do with parcs patches, of course. There are another ~46 patches that are on master but not on the `ghc-parmakegsoc` branch. Fast forwarding the branch will be my next step.) Notice that, weirdly, this problem occurs even when `ghc -j` is not used (as above). For reference here is a sample of the errors: {{{ cabal-1.17.0-HEAD-20130802: Error: some packages failed to install: HUnit-1.2.5.2 failed during the configure step. The exception was: user error (/home/beehive/ryan_scratch/ghc-parGSOC2/libraries/Cabal/Cabal/dist- install/build/libHSCabal-1.18.0.a(Simple__64.o): In function `chbT_info': (.text+0x857): undefined reference to `rff5_info' /home/beehive/ryan_scratch/ghc-parGSOC2/libraries/Cabal/Cabal/dist- install/build/libHSCabal-1.18.0.a(Simple__64.o): In function `sg4L_info': ... }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/910#comment:41 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler