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glibc/scripts/gen-sorted.awk

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#! /usr/bin/awk -f
# Generate sorted list of directories. The sorting is stable but with
# dependencies between directories resolved by moving dependees in front.
# (C) Copyright 1998 Free Software Foundation, Inc.
# Written by Ulrich Drepper <drepper@cygnus.com>, 1998.
BEGIN {
cnt = 0
dnt = 0
}
{
if ($1 ~ /depend/) {
from[dnt] = $2
to[dnt] = $3
++dnt
} else {
all[cnt++] = $1
}
}
END {
do {
moved = 0
for (i = 0; i < dnt; ++i) {
for (j = 0; j < cnt; ++j) {
if (all[j] == from[i]) {
for (k = j + 1; k < cnt; ++k) {
if (all[k] == to[i]) {
break;
}
}
if (k < cnt) {
for (l = k - 1; l >= j; --l) {
all[l + 1] = all[l]
}
all[j] = to[i]
break;
}
}
}
if (j < cnt) {
moved = 1
break
}
}
} while (moved)
printf "sorted-subdirs = "
for (i = 0; i < cnt; ++i) {
printf "%s ", all[i];
}
printf "\n"
}