File: ocaml-dep.sh.in

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#!/bin/bash -
# (C) Copyright 2009-2019 Red Hat Inc.
# @configure_input@
#
# This program 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 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

# This is a smarter wrapper around ocamldep(1) which is used to create
# the .depend files which are present in each subdirectory that builds
# OCaml code.
#
# Usage:
#   .depend: *.mli *.ml
#       $(top_builddir)/ocaml-dep.sh $^
#   -include .depend

set -e

# List of directories that contain common OCaml libraries.  If it
# contains OCaml code that can be included from another directory,
# then it should go here.  Note that OCaml modules in these
# directories must have unique names (eg. not ‘Utils’) else
# dependencies don't get built right.
include_dirs="
common/mlaugeas
common/mlgettext
common/mlpcre
common/mlprogress
common/mlstdutils
common/mltools
common/mlutils
common/mlvisit
common/mlxml
customize
ocaml
"

# Output file is always created in the current directory.
output=.depend

subdir=$(realpath --relative-to=@abs_top_builddir@ .)
srcdir=$(realpath --relative-to=. @abs_top_srcdir@/${subdir})
srcdir_re=$(realpath --relative-to=. @abs_top_srcdir@/${subdir} | sed 's/\./[.]/g')
top_builddir=$(realpath --relative-to=. @abs_top_builddir@)

includes="-I @abs_top_srcdir@/$subdir -I @abs_top_builddir@/$subdir"
for i in $include_dirs; do
    includes="$includes -I @abs_top_srcdir@/$i -I @abs_top_builddir@/$i"
done

rm -f $output $output-t

echo "# OCaml dependencies generated by $0" > $output-t
echo >> $output-t

# Rewrite paths
# 1. Normalize absolute srcdir to relative path
# 2. Object files (*.cm*, *.o), in srcdir: Rewrite to builddir
# 3. Generated _config.ml in srcdir: Rewrite to builddir
# 4. Other object files below abs_top_srcdir: rewrite to corresponding builddir
# 5. Eliminate "./" prefix
@OCAMLFIND@ ocamldep @OCAMLDEP_ALL@ @OCAMLDEP_ONE_LINE@ $includes "$@" \
    | sed \
          -e "s,@abs_top_srcdir@/${subdir},.,g" \
          -e "s,\B${srcdir_re}/\\([^ ]*[.]\\)\\(cm[^ ]*\\|o\\),\\1\\2,g" \
          -e "s,\B${srcdir_re}/\\([^ /]*_config[.]ml\\),\\1,g" \
          -e "s,@abs_top_srcdir@/\\([^ ]*[.]\\)\\(cm[^ ]*\\|o\\),${top_builddir}/\\1\\2,g" \
          -e 's,\(^\| \)./,\1,g' \
    >> $output-t

chmod -w $output-t

mv $output-t $output