Import guile-1.8 as multiple upstream tarball component

[lilypond.git] / guile18 / pre-inst-guile.in

diff --git a/guile18/pre-inst-guile.in b/guile18/pre-inst-guile.in
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+#!/bin/sh
+
+#      Copyright (C) 2002, 2006, 2008 Free Software Foundation
+#
+#   This file is part of GUILE.
+#
+#   GUILE is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as
+#   published by the Free Software Foundation; either version 2, or
+#   (at your option) any later version.
+#
+#   GUILE is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public
+#   License along with GUILE; see the file COPYING.  If not, write
+#   to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
+#   Floor, Boston, MA 02110-1301 USA
+
+# NOTE: at some point we might consider invoking this under
+# pre-inst-guile-env.  If this will work, then most of the code below
+# can be removed.
+
+# NOTE: If you update this file, please update pre-inst-guile-env.in
+# as well, if appropriate.
+
+# Commentary:
+
+# Usage: pre-inst-guile [ARGS]
+#
+# This script arranges for the environment to support, and eventaully execs,
+# the uninstalled binary guile executable located somewhere under libguile/,
+# passing ARGS to it.  In the process, env var GUILE is clobbered, and the
+# following env vars are modified (but not clobbered):
+#   GUILE_LOAD_PATH
+#   LTDL_LIBRARY_PATH
+#
+# This script can be used as a drop-in replacement for $bindir/guile;
+# if there is a discrepency in behavior, that's a bug.
+
+# Code:
+
+# config
+subdirs_with_ltlibs="srfi guile-readline"       # maintain me
+
+# env (set by configure)
+top_srcdir="@top_srcdir_absolute@"
+top_builddir="@top_builddir_absolute@"
+
+[ x"$top_srcdir"   = x -o ! -d "$top_srcdir" -o \
+  x"$top_builddir" = x -o ! -d "$top_builddir" ] && {
+    echo $0: bad environment
+    echo top_srcdir=$top_srcdir
+    echo top_builddir=$top_builddir
+    exit 1
+}
+
+# handle GUILE_LOAD_PATH (no clobber)
+if [ x"$GUILE_LOAD_PATH" = x ]
+then
+    GUILE_LOAD_PATH="${top_srcdir}/guile-readline:${top_srcdir}"
+else
+  for d in "${top_srcdir}" "${top_srcdir}/guile-readline"
+  do
+    # This hair prevents double inclusion.
+    # The ":" prevents prefix aliasing.
+    case x"$GUILE_LOAD_PATH" in
+      x*${d}:*) ;;
+      *) GUILE_LOAD_PATH="${d}:$GUILE_LOAD_PATH" ;;
+    esac
+  done
+fi
+export GUILE_LOAD_PATH
+
+# handle LTDL_LIBRARY_PATH (no clobber)
+ltdl_prefix=""
+dyld_prefix=""
+for dir in $subdirs_with_ltlibs ; do
+    ltdl_prefix="${top_builddir}/${dir}:${ltdl_prefix}"
+    dyld_prefix="${top_builddir}/${dir}/.libs:${dyld_prefix}"
+done
+LTDL_LIBRARY_PATH="${ltdl_prefix}$LTDL_LIBRARY_PATH"
+export LTDL_LIBRARY_PATH
+DYLD_LIBRARY_PATH="${dyld_prefix}${top_builddir}/libguile/.libs:$DYLD_LIBRARY_PATH"
+export DYLD_LIBRARY_PATH
+
+# set GUILE (clobber)
+GUILE=${top_builddir}/libguile/guile
+export GUILE
+
+# do it
+exec $GUILE "$@"
+
+# never reached
+exit 1
+
+# pre-inst-guile ends here