[PATCH] Speed up stage0 bootstrap build using prebuilts

[Jonas Hahnfeld via "Developers list for Guile, the GNU extensibility library" <guile-devel@gnu.org>]

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From 95f15821c535537c7ad4fdae1988855314d56ece Mon Sep 17 00:00:00 2001
From: Jonas Hahnfeld <hahnjo@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@:${top_builddir}/stage0" ;;
         stage1) GUILE_LOAD_COMPILED_PATH="${top_builddir}/stage1:${top_builddir}/stage0" ;;
         stage2) GUILE_LOAD_COMPILED_PATH="${top_builddir}/stage1" ;;
         *) GUILE_LOAD_COMPILED_PATH="${top_builddir}/stage2:${top_builddir}/guile-readline" ;;
-- 
2.43.0

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