#15688: HAVE_LIBNUMA is defined as non-zero even when libnuma does not exist ----------------------------------------+--------------------------------- Reporter: osa1 | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Build System | Version: 8.6.1 Keywords: | Operating System: Linux Architecture: Unknown/Multiple | Type of failure: None/Unknown Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: ----------------------------------------+--------------------------------- I think this is a regression introduced in the last few weeks. The libnuma dependency is checked correctly by the configure script, but somehow when I don't have libnuma installed I still have `HAVE_LIBNUMA` defined as non-zero so I end up with this error: {{{ /usr/bin/x86_64-linux-gnu-ld.gold: error: cannot find -lnuma rts/posix/OSMem.c:368:0: error: error: undefined reference to 'mbind' | 368 | if (RtsFlags.GcFlags.numa) { | ^ rts/posix/OSMem.c:670:0: error: error: undefined reference to 'numa_num_configured_nodes' | 670 | } | ^ rts/posix/OSMem.c:680:0: error: error: undefined reference to 'numa_get_mems_allowed' | 680 | | ^ rts/posix/OSMem.c:670:0: error: error: undefined reference to 'numa_num_configured_nodes' | 670 | } | ^ rts/posix/OSMem.c:685:0: error: error: undefined reference to 'numa_bitmask_free' | 685 | mask = numa_get_mems_allowed(); | ^ rts/posix/OSMem.c:670:0: error: error: undefined reference to 'numa_num_configured_nodes' | 670 | } | ^ collect2: error: ld returned 1 exit status `gcc' failed in phase `Linker'. (Exit code: 1) utils/ghc-cabal/ghc.mk:56: recipe for target 'utils/ghc- cabal/dist/build/tmp/ghc-cabal' failed }}} Installing libnuma-dev fixes this. Relevant lines in config.log: {{{ CabalHaveLibNuma='False' #define HAVE_LIBNUMA 0 }}} I have no idea why `HAVE_LIBNUMA` is not 0 when compiling the file. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15688 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler