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[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #5780 Accept G

From: Auto mailings of changes to Lily Issues via Testlilyissues-auto
Subject: [Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #5780 Accept GUILE 2 without extra configure options
Date: Sat, 07 Mar 2020 02:08:50 -0000

I think we need to redial or augment some of this patch since it will leave even experienced developers with an unexpected result.

If I now do
GUILE_CONFIG=/usr/local/tmp/guile-1.8/bin/guile-config ./configure
on my system the slow and crash-prone Guile-2.2 will be used. I would have been notified of that because the configuration would have failed because of a missing --with-guilev2 option, but this option is no longer necessary. So my explicit choice of Guile-1.8, made in the previously supported manner, will get silently ignored.

That is not good. I think that if GUILE_CONFIG is given, it should be heeded rather than ignored. Also if PKG_CONFIG_PATH is given in the environment, it should be recorded so that
./config.status --recheck
will not forget about it again.

We have dropped too many safety nets for making sure that our configure does what is expected of it.

[issues:#5780] Accept GUILE 2 without extra configure options

Status: Fixed
Labels: Fixed_2_21_0
Created: Fri Feb 21, 2020 03:18 PM UTC by Han-Wen Nienhuys
Last Updated: Tue Feb 25, 2020 02:43 PM UTC
Owner: Han-Wen Nienhuys

A run of the regression tests at "5f4cf7bd38 - Parse inline scheme
using per-_expression_ port" shows the following issues compared to

As of a19aed1 "GUILE2: Scale GC heap with the number of smobs",
performance for large scores with GUILE 2.2 is similar to GUILE 1.8.

For small scores, a 1.5 sec extra delay (due to byte-code compilation
of .scm files) remains, but this does not warrant the "highly
experimental" monniker.

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