Re: configuring apps for guile

[Ludovic Courtès]

Hello Matt,

Matt Wette <address@hidden> skribis:

> From configure.ac:
>
> guile_build_prefix=`$GUILE -c "(display (assq-ref %guile-build-info
> 'prefix))"`
>
> if test "$guile_build_prefix" == "$prefix"; then
>   echo "using paths for installed guile"
>   GUILE_SITE_DIR
>   GUILE_SITE_GO_DIR
>   GUILE_DATA_DIR
> else
>   echo "using default paths for guile"
>   GUILE_SITE=$prefix/share/guile/site/$GUILE_EFFECTIVE_VERSION
> GUILE_SITE_GO=$prefix/lib/guile/$GUILE_EFFECTIVE_VERSION/site-ccache
>   GUILE_DATA=$prefix/share
>   AC_SUBST([GUILE_SITE])
>   AC_SUBST([GUILE_SITE_GO])
>   AC_SUBST([GUILE_DATA])
> fi

I would recommend not even bothering with the first part of the ‘if’,
and instead always default to install files under $prefix (more
precisely: under $datadir and $libdir).

The bits I’ve been using are:

configure.ac:

  dnl We require guile.m4, from Guile.  Make sure it's available.
  m4_pattern_forbid([^GUILE_P])
  m4_pattern_allow([^GUILE_PKG_ERRORS])

  GUILE_PKG([3.0 2.2 2.0])
  GUILE_PROGS

Makefile.am:

  moddir = $(datadir)/guile/site/$(GUILE_EFFECTIVE_VERSION)
  godir  = $(libdir)/guile/$(GUILE_EFFECTIVE_VERSION)/site-ccache

  SOURCES = a.scm b.scm c.scm
  GOBJECTS = $(SOURCES:%.scm=%.go)
  nobase_mod_DATA = $(SOURCES)
  nobase_go_DATA = $(GOBJECTS)

I believe Hall¹ does the right thing, making it easier to get started
with all this!

Thanks,
Ludo’.

¹ https://gitlab.com/a-sassmannshausen/guile-hall