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From: Benda Xu <heroxbd@g.o> |
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|
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If ghc spawns too many C compilers, it will exhaust file descripters. |
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|
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In the reference, it was thought to be a macOS bug for aggressive fd |
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limits. But the ghc bug also applies to GNU/Linux, when ghc is |
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asked to spawn, for example 256, jobs. |
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|
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This patch circumvents this ghc design flaw. |
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|
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Reference: https://github.com/commercialhaskell/stack/issues/1177 |
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Reference: https://github.com/commercialhaskell/stack/issues/1979 |
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Signed-off-by: Benda Xu <heroxbd@g.o> |
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--- |
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eclass/ghc-package.eclass | 4 +++- |
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1 file changed, 3 insertions(+), 1 deletion(-) |
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|
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diff --git a/eclass/ghc-package.eclass b/eclass/ghc-package.eclass |
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index 5361f09af1e9..d729f4a407b4 100644 |
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--- a/eclass/ghc-package.eclass |
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+++ b/eclass/ghc-package.eclass |
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@@ -203,7 +203,9 @@ ghc-make-args() { |
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# https://ghc.haskell.org/trac/ghc/ticket/9221#comment:57 |
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# SMP is a requirement for parallel GC's gen0 |
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# 'qb' balancing. |
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- echo "-j$(makeopts_jobs) +RTS -A256M -qb0 -RTS" |
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+ local n=$(makeopts_jobs) |
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+ [[ ${n} -gt 64 ]] && n=64 |
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+ echo "-j${n} +RTS -A256M -qb0 -RTS" |
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ghc_make_args=() |
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fi |
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echo "${ghc_make_args[@]}" |
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-- |
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2.25.0 |
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