On Mon, 2024-05-06 at 21:12 +0200, Jonas Hahnfeld via Developers list for Guile, the GNU extensibility library wrote: > On Mon, 2024-05-06 at 11:34 +0200, Ludovic Courtès wrote: > > Hi Jonas, > > > > Jonas Hahnfeld <hah...@hahnjo.de> skribis: > > > > > On Thu, 2024-01-04 at 11:57 +0100, Jonas Hahnfeld wrote: > > > > From 95f15821c535537c7ad4fdae1988855314d56ece Mon Sep 17 > > > > 00:00:00 2001 > > > > From: Jonas Hahnfeld <hah...@hahnjo.de> > > > > Date: Thu, 4 Jan 2024 11:44:55 +0100 > > > > Subject: [PATCH] Speed up stage0 bootstrap build using > > > > prebuilts > > > > > > > > Use prebuilt bytecode of ice-9/eval.go and others for all of > > > > stage0, > > > > it is optimized and evaluation is much faster. In my > > > > environment, > > > > this speeds up the build of guile-3.0.9 from around 29 minutes > > > > to > > > > only 19 minutes. > > > > > > > > * meta/build-env.in: In stage0, prefer prebuilt bytecode over > > > > just > > > > compiled stage0 files. > > > > --- > > > > meta/build-env.in | 2 +- > > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > > > > > diff --git a/meta/build-env.in b/meta/build-env.in > > > > index bdc88ded4..446a536af 100644 > > > > --- a/meta/build-env.in > > > > +++ b/meta/build-env.in > > > > @@ -58,7 +58,7 @@ then > > > > fi > > > > export GUILE_LOAD_PATH > > > > case "$GUILE_BOOTSTRAP_STAGE" in > > > > - stage0) > > > > GUILE_LOAD_COMPILED_PATH="${top_builddir}/stage0:${top_srcdir}/ > > > > prebuilt/@SCM_PREBUILT_BINARIES@" ;; > > > > + stage0) > > > > GUILE_LOAD_COMPILED_PATH="${top_srcdir}/prebuilt/@SCM_PREBUILT_ > > > > BINARIES@:${top_builddir}/stage0" ;; > > > > I don’t understand why changing the order would make a difference. > > Surely if .go files are available under prebuilt/, they’ll be > > found, > > even if that directory comes second? Or am I missing something? > > Yes, they are found but with lower priority. As I try to explain in > the commit message (could be improved though), the same bytecode is > also built during stage0, but without optimizations which makes the > rest of stage0 awfully slow.
ping, does this explanation make sense? Jonas
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