zfs/autogen.sh

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#!/bin/sh
[ "${0%/*}" = "$0" ] || cd "${0%/*}" || exit
# %reldir%/%canon_reldir% (%D%/%C%) only appeared in automake 1.14, but RHEL/CentOS 7 has 1.13.4
# This is an (overly) simplistic preprocessor that papers around this for the duration of the generation step,
# and can be removed once support for CentOS 7 is dropped
automake --version | awk '{print $NF; exit}' | (
IFS=. read -r AM_MAJ AM_MIN _
[ "$AM_MAJ" -gt 1 ] || [ "$AM_MIN" -ge 14 ]
) || {
process_root() {
root="$1"; shift
grep -q '%[CD]%' "$root/Makefile.am" || return
find "$root" -name Makefile.am "$@" | while read -r dir; do
dir="${dir%/Makefile.am}"
grep -q '%[CD]%' "$dir/Makefile.am" || continue
reldir="${dir#"$root"}"
reldir="${reldir#/}"
canon_reldir="$(printf '%s' "$reldir" | tr -C 'a-zA-Z0-9@_' '_')"
reldir_slash="$reldir/"
canon_reldir_slash="${canon_reldir}_"
[ -z "$reldir" ] && reldir_slash=
[ -z "$reldir" ] && canon_reldir_slash=
echo "$dir/Makefile.am" >&3
sed -i~ -e "s:%D%/:$reldir_slash:g" -e "s:%D%:$reldir:g" \
-e "s:%C%_:$canon_reldir_slash:g" -e "s:%C%:$canon_reldir:g" "$dir/Makefile.am"
done 3>>"$substituted_files"
}
rollback() {
while read -r f; do
mv "$f~" "$f"
done < "$substituted_files"
rm -f "$substituted_files"
}
echo "Automake <1.14; papering over missing %reldir%/%canon_reldir% support" >&2
substituted_files="$(mktemp)"
trap rollback EXIT
roots="$(sed '/Makefile$/!d;/module/d;s:^\s*:./:;s:/Makefile::;/^\.$/d' configure.ac)"
IFS="
"
for root in $roots; do
root="${root#./}"
process_root "$root"
done
set -f
# shellcheck disable=SC2086,SC2046
process_root . $(printf '!\n-path\n%s/*\n' $roots)
}
autoreconf -fiv && rm -rf autom4te.cache