xref: /freebsd/sys/contrib/openzfs/autogen.sh (revision f81cdf24ba5436367377f7c8e8f51f6df2a75ca7)
1#!/bin/sh
2[ "${0%/*}" = "$0" ] || cd "${0%/*}" || exit
3
4# %reldir%/%canon_reldir% (%D%/%C%) only appeared in automake 1.14, but RHEL/CentOS 7 has 1.13.4
5# This is an (overly) simplistic preprocessor that papers around this for the duration of the generation step,
6# and can be removed once support for CentOS 7 is dropped
7automake --version | awk '{print $NF; exit}' | (
8	IFS=. read -r AM_MAJ AM_MIN _
9	[ "$AM_MAJ" -gt 1 ] || [ "$AM_MIN" -ge 14 ]
10) || {
11	process_root() {
12		root="$1"; shift
13
14		grep -q '%[CD]%' "$root/Makefile.am" || return
15		find "$root" -name Makefile.am "$@" | while read -r dir; do
16			dir="${dir%/Makefile.am}"
17			grep -q '%[CD]%' "$dir/Makefile.am" || continue
18
19			reldir="${dir#"$root"}"
20			reldir="${reldir#/}"
21
22			canon_reldir="$(printf '%s' "$reldir" | tr -C 'a-zA-Z0-9@_' '_')"
23
24			reldir_slash="$reldir/"
25			canon_reldir_slash="${canon_reldir}_"
26			[ -z "$reldir" ] && reldir_slash=
27			[ -z "$reldir" ] && canon_reldir_slash=
28
29			echo "$dir/Makefile.am" >&3
30			sed -i~ -e "s:%D%/:$reldir_slash:g"       -e "s:%D%:$reldir:g" \
31			        -e "s:%C%_:$canon_reldir_slash:g" -e "s:%C%:$canon_reldir:g" "$dir/Makefile.am"
32		done 3>>"$substituted_files"
33	}
34
35	rollback() {
36		while read -r f; do
37			mv "$f~" "$f"
38		done < "$substituted_files"
39		rm -f "$substituted_files"
40	}
41
42
43	echo "Automake <1.14; papering over missing %reldir%/%canon_reldir% support" >&2
44
45	substituted_files="$(mktemp)"
46	trap rollback EXIT
47
48	roots="$(sed '/Makefile$/!d;/module/d;s:^\s*:./:;s:/Makefile::;/^\.$/d' configure.ac)"
49
50	IFS="
51"
52	for root in $roots; do
53		root="${root#./}"
54		process_root "$root"
55	done
56
57	set -f
58	# shellcheck disable=SC2086,SC2046
59	process_root . $(printf '!\n-path\n%s/*\n' $roots)
60}
61
62autoreconf -fiv && rm -rf autom4te.cache
63