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Code in rts/ which deals with numa checks for `#if HAVE_LIBNUMA`, however this macro is not populated during `./configure`. https://phabricator.haskell.org/D2329 changed this code last and we instead set `USE_LIBNUMA` which fails to setup numa correctly. Test Plan: From main directory in ghc, ./configure && make clean && make boot && make cd nofib/parallel/queens ../../../inplace/bin/ghc-stage2 Main.hs -rtsopts -threaded ./Main 15 +RTS -N24 -s -A64m --numa This fails before this patch with Main: --numa: OS reports NUMA is not available After the fix, it works as expected. Run the validation script, ./validate (It fails with an error in `compiler/utils/Util.hs` saying `GHC.Stack.CallStack` not found, once I remove this 1 line from this file , the script works) Reviewers: hvr, austin, bgamari, erikd, simonmar Reviewed By: erikd, simonmar Subscribers: mpickering, thomie, erikd, niteria Differential Revision: https://phabricator.haskell.org/D2620 GHC Trac Issues: #12741
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