tame/build-aux/gen-make

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#!/bin/bash
#
# Generates Makefile containing dependencies for each package
#
# Copyright (C) 2016 R-T Specialty, LLC.
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
##
# windows machines may not have the tools to resolve a path, so let's do so
# ourselves (TODO: there's better (and more performant) ways of doing this than
# repeated string replacements); TODO: ./
resolv-path()
{
# no need to do anything if the string does not contain a parent dir reference
# (we use this convoluted string replacement check for woe32/64 to prevent
# additional spawns (e.g. sed) that would slow us down and because =~ is not
# properly supported in msys
[[ "$1" != "${1/..\//}"a ]] || {
echo "$1"
return
}
local path=
while read name; do
if [ "$name" == .. ]; then
[ -n "$path" ] || {
echo "warning: will not resolve $1" >&2
return 5
}
path="${path%/*}"
continue
fi
path="$path/$name"
done <<< "${1//\//$'\n'}"
# echo path without leading /
echo -n "${path:1}"
}
# rule for building
[ -z "$GEN_MAKE" ] && {
echo "%.xmlo:: %.tmp"
echo -e "\t@rm -f \$@ \$<"
[ -n "$xmlo_cmd" ] \
&& echo -e "\t$xmlo_cmd" \
|| echo -e "\ttouch \$@"
echo "%.xmlo:: %.xml | prexmlo"
[ -n "$xmlo_cmd" ] \
&& echo -e "\t$xmlo_cmd" \
|| echo -e "\ttouch \$@"
export GEN_MAKE="$( pwd )/$0"
exec "$GEN_MAKE" "$@"
}
until [ $# -eq 0 ]; do (
path="${1%%/}"
echo "[gen-make] scanning $path" >&2
cd "$( basename $path )/" || exit $?
deps=$( find -maxdepth 1 -iname '*.dep' )
for dpath in $deps; do
# equivalent to basename command; use this since spawning processes on
# windoze is slow as shit (originally we did find -exec bashename)
d="${dpath##*/}"
echo "[gen-make] found $path/$d" >&2
echo -n "$path/${d%.*}.xmlo:"
# output deps
while read dep; do
# if the first character is a slash, then it's relative to the project
# root---the resolution has already been done for us!
if [ "${dep:0:1}" == '/' ]; then
echo -n " ${dep:1}.xmlo"
continue
fi
echo -n ' '
resolv-path "$path/$dep.xmlo"
done < "$d"
echo
done
# recurse on every subdirectory
for p in */; do
[ "$p" == ./ -o "$p" == ../ ] && continue
[ ! -d "$p" ] || "$GEN_MAKE" "$path/$p" || {
echo "fatal: failed to recurse on $( pwd )/$path/$p" >&2
exit 1
}
done
); shift; done