etc/init.d: decide which variant to use at build time.

[mirror_zfs.git] / autogen.sh

diff --git a/autogen.sh b/autogen.sh
index 427394af47a3b919d8fa3afce741dfdce983404c..39eb82203d69a9b582acfbe2d89e9947d86c5937 100755 (executable)
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,4 +1,62 @@
 #!/bin/sh
+[ "${0%/*}" = "$0" ] || cd "${0%/*}" || exit
 
-autoreconf -fiv
-rm -Rf autom4te.cache
+# %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