Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: fc2b083f by Andreas Klebinger at 2026-03-14T05:15:14-04:00 Revert "hadrian/build-cabal: Better respect and utilize -j" This reverts commit eab3dbba79650e6046efca79133b4c0a5257613d. While it's neat this currently isn't well supported on all platforms. It's time will come, but for now I'm reverting this to avoid issues for users on slightly unconvential platforms. This will be tracked at #26977. - - - - - 1 changed file: - hadrian/build-cabal Changes: ===================================== hadrian/build-cabal ===================================== @@ -23,52 +23,9 @@ fi CABVERSTR=$("$CABAL" --numeric-version) CABVER=( ${CABVERSTR//./ } ) -THREADS="-j1" -GC_THREADS="" -SEMAPHORE="" - -echo "$@" - -# Try building hadrian in parallel. We check for -j<n>. -# If threads > 1 we pass --semaphore to allow ghc to build more than one module in parallel -# If threads > 4 we pass -qn as higher parallel gc thread counts can lead to slow downs -# We only do any of thise for cabal >= 3.14, because I don't trust older versions to handle --semaphore right -if [ "${CABVER[0]}" -gt 3 ] || [ "${CABVER[0]}" -eq 3 -a "${CABVER[1]}" -ge 14 ]; -then - - for arg in "$@"; do - case "$arg" in - -j) - GC_THREADS="-qn4" - SEMAPHORE="--semaphore" - THREADS="-j" - ;; - -j[0-9]*) - threads="${arg#-j}" - if [[ "$threads" =~ ^[0-9]+$ ]] && [ "$threads" -ne 0 ]; then - THREADS="-j${threads}" - if [ $threads -ge 4 ]; then - GC_THREADS="-qn4" - fi - if [ $threads -gt 1 ]; then - SEMAPHORE="--semaphore" - fi - fi - ;; - esac - - done - -fi - -if [ "$(uname -s)" = "FreeBSD" ]; then - # Can't rely on posix semaphore support in free bsd. - SEMAPHORE="" -fi - if [ "${CABVER[0]}" -gt 2 -o "${CABVER[0]}" -eq 2 -a "${CABVER[1]}" -ge 2 ]; then - "$CABAL" --project-file="$PROJ" new-build "${CABFLAGS[@]}" ${THREADS} ${SEMAPHORE} --ghc-options="+RTS ${GC_THREADS} -RTS" exe:hadrian + "$CABAL" --project-file="$PROJ" new-build "${CABFLAGS[@]}" -j exe:hadrian # use new-exec instead of new-run to make sure that the build-tools (alex & happy) are in PATH "$CABAL" --project-file="$PROJ" new-exec "${CABFLAGS[@]}" hadrian -- \ --directory "$PWD" \ View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/fc2b083f9541ff29925988bdf2dbb259... -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/fc2b083f9541ff29925988bdf2dbb259... You're receiving this email because of your account on gitlab.haskell.org.