Bug#902174: #902174: RFP: mes

[Jan Nieuwenhuizen <janneke@gnu.org>]

Matt Wette writes:

> I don't understand why `eval' is needed, esp when forcing the shell to
> be bash.
> Is there any reference to this usage?

Debian's configure looks like what I wrote in the commit message (it
uses more options)

    ./configure --prefix=/usr --infodir=\${prefix}/share/info

Without the eval, this results in a Makfile with this snippet

    GUILE=guile
    SITE_SCM_DIR=/usr/share/guile/site/2.2
    SITE_SCM_GO_DIR=/usr/lib/guile/2.2/site-ccache
    INFODIR=${prefix}/share/info

Adding eval fixes this, it produces

    GUILE=guile
    SITE_SCM_DIR=/usr/share/guile/site/2.2
    SITE_SCM_GO_DIR=/usr/lib/guile/2.2/site-ccache
    INFODIR=/usr/share/info

Another fix would have been to also set `prefix' in Makefile

    GUILE=guile
    prefix=/usr

but that would have meant a much bigger Makefile change.  Reasons
of symmetry would demand

    prefix=/usr
    GUILE=guile
    SITE_SCM_DIR=${prefix}/share/guile/site/2.2
    SITE_SCM_GO_DIR=${prefix}/lib/guile/2.2/site-ccache
    INFODIR=${prefix}/share/info

but then, because Nyacc uses

    make -C .. -f Makefile.nyacc

we probably also need to pass prefix variable to the sub-makes...So I
chose the easy solution.

Greetings,
janneke

-- 
Jan Nieuwenhuizen <janneke@gnu.org> | GNU LilyPond http://lilypond.org
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