#11981: unknown symbol `__udivti3' when BuildFlavour = perf-llvm -------------------------------------+------------------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.0.2 Component: Compiler | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: Other | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by erikd): On my Debian system, the symbol `__udivti3` seems to be provided by `/lib/x86_64-linux-gnu/libgcc_s.so.1` Easiest way to trigger the problem is to build with `BuildFlavour = perf- llvm` and then run: {{{ $ inplace/bin/ghc-stage2 --interactive GHCi, version 8.1.20160802: http://www.haskell.org/ghc/ :? for help ghc-stage2: /home/erikd/Git/ghc-upstream/libraries/ghc-prim/dist- install/build/HSghc-prim-0.5.0.0.o: unknown symbol `__udivti3' ghc-stage2: unable to load package `ghc-prim-0.5.0.0' }}} Not sure how to add this to the build system, but I was able to hack something together to test using the following steps. * Full build with `BuildFlavour = perf-llvm`. * Edit `ghc/stage2/package-data.mk` and add `gcc_s` to the `ghc_stage2_DEP_EXTRA_LIBS` line. * Edit `mk/build.mk` and uncomment `stage=2` so we only build the stage 2 compiler. * `touch compiler/main/GHC.hs` to force a rebuild. * Run `make`. Now when I run `inplace/bin/ghc-stage2 --interactive` it works correctly. @thomie Any idea on how this could be fixed in the build system? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11981#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler