Re: Can no longer build.

[David Kastrup]

Jonas Hahnfeld via Discussions on LilyPond development
<address@hidden> writes:

> Am Samstag, den 09.11.2019, 12:55 +0100 schrieb David Kastrup:
>> Jonas Hahnfeld <address@hidden> writes:
>> > 
>> > AFAICS configure requires a guile executable between versions
>> > 1.8.2 to1.9.0 (see configure.ac, line 309), unless you pass
>> > --enable-guile2which is off by default.
>> 
>> That would seem a mistake.  LilyPond works perfectly well with a
>> Guile-2executable.  It's the Guile-1.8 development libraries that
>> are neededfor compilation into the LilyPond binary, but the scripts
>> are fine usinglater binaries of Guile.
>
> That is $ git log -p -n1 e9ae1cb3b093498ccb9d5f7348c755a3243bbccc --
> configure.accommit e9ae1cb3b093498ccb9d5f7348c755a3243bbcccAuthor:
> Thomas Morley <address@hidden>Date: Sun Mar 19 14:29:04 2017
> +0100
>     Issue 5108 Let configure find all needed files with guile-2.2 in
> configure.ac Adds support for STEPMAKE_GUILE Update guile-versions for
> STEPMAKE_GUILE and STEPMAKE_GUILE_DEVEL in aclocal.m4 update the list
> to search for guile-config Many thanks to Antonio Ospite
> diff --git a/configure.ac b/configure.acindex d77ea15881..8f2f61abf8
> 100644--- a/configure.ac+++ b/configure.ac@@ -181,7 +181,7 @@
> STEPMAKE_TEXMF(REQUIRED) STEPMAKE_TEXMF_DIRS(REQUIRED) if test
> "$GUILEv2" = "yes" then- STEPMAKE_GUILE_DEVEL(REQUIRED, 2.0.7, 2.2.0)+
> STEPMAKE_GUILE_DEVEL(REQUIRED, 2.0.7, 2.3.0) else
> STEPMAKE_GUILE_DEVEL(REQUIRED, 1.8.2, 1.9.0) fi@@ -267,7 +267,12 @@
> STEPMAKE_FREETYPE2(freetype2, REQUIRED, 2.1.10) STEPMAKE_WINDOWS #
> guile executable for some scripts-STEPMAKE_GUILE(OPTIONAL, 1.8.2,
> 1.9.0)+if test "$GUILEv2" = "yes"+then+ STEPMAKE_GUILE(OPTIONAL,
> 2.0.7, 2.3.0)+else+ STEPMAKE_GUILE(OPTIONAL, 1.8.2, 1.9.0)+fi # perl
> for help2man and for mf2pt1.pl STEPMAKE_PERL(REQUIRED)
> but before this commit, it would just always require Guile 1.8.2 to
> 1.9.0. I've no experience with using guile-2.0 or guile-2.2 for the
> scripts, but if you post a patch I can give it a try (Arch Linux
> bundles all three versions).
> Just wondering if it's wise to use a different version of Guile for
> the scripts than the libraries...

For a cross environment like GUB it seems like excessive work (and
possible improvements in Scheme execution speed do not seem
performance-relevant).

But for stuff intended to run as natively as possible, relying on
current and maintained executables tends to be better from a maintenance
and security view.

-- 
David Kastrup