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140 lines
3.0 KiB
Awk
Executable File
140 lines
3.0 KiB
Awk
Executable File
#!/usr/bin/awk -f
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# Generate sorted list of directories. The sorting is stable but with
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# dependencies between directories resolved by moving dependees in front.
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# Copyright (C) 1998-2016 Free Software Foundation, Inc.
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# Written by Ulrich Drepper <drepper@cygnus.com>, 1998.
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BEGIN {
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cnt = split(subdirs, all) + 1
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dnt = 0
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}
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# Let input files have comments.
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{ sub(/[ ]*#.*$/, "") }
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NF == 0 { next }
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{
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subdir = type = FILENAME;
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sub(/^.*\//, "", type);
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sub(/\/[^/]+$/, "", subdir);
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sub(/^.*\//, "", subdir);
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thisdir = "";
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}
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type == "Depend" && NF == 1 {
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from[dnt] = subdir;
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to[dnt] = $1;
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++dnt;
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next
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}
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type == "Subdirs" && NF == 1 { thisdir = $1 }
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type == "Subdirs" && NF == 2 && $1 == "first" {
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thisdir = $2;
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# Make the first dir in the list depend on this one.
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from[dnt] = all[1];
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to[dnt] = thisdir;
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++dnt;
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}
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type == "Subdirs" && NF == 2 && $1 == "inhibit" {
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inhibit[$2] = subdir;
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next
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}
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type == "Subdirs" && thisdir {
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all[cnt++] = thisdir;
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if (FILENAME ~ (srcpfx ? /^\.\.\/sysdeps\// : /^sysdeps\//) \
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|| system("test -d " srcpfx thisdir) == 0) {
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# This Subdirs file is in the main source tree,
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# or this subdirectory exists in the main source tree.
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this_srcdir = srcpfx thisdir
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}
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else {
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# The Subdirs file comes from an add-on that should have the subdirectory.
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dir = FILENAME;
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do
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sub(/\/[^/]+$/, "", dir);
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while (dir !~ /\/sysdeps$/);
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sub(/\/sysdeps$/, "", dir);
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if (system("test -d " dir "/" thisdir) == 0)
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dir = dir "/" thisdir;
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else {
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sub(/\/[^/]+$/, "", dir);
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if (system("test -d " dir "/" thisdir) == 0)
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dir = dir "/" thisdir;
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else {
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print FILENAME ":" FNR ":", "cannot find", thisdir > "/dev/stderr";
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exit 2
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}
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}
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file = dir "/Depend";
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if (srcpfx)
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sub(/^\.\.\//, "", dir);
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if (dir !~ /^\/.*$/)
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dir = "$(..)" dir;
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print thisdir "-srcdir", ":=", dir;
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}
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file = this_srcdir "/Depend";
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if (system("test -f " file) == 0) {
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ARGV[ARGC++] = file;
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# Emit a dependency on the implicitly-read file.
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if (srcpfx)
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sub(/^\.\.\//, "", file);
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if (file !~ /^\/.*$/)
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file = "$(..)" file;
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print "$(common-objpfx)sysd-sorted:", "$(wildcard", file ")";
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}
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next
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}
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{
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print FILENAME ":" FNR ":", "what type of file is this?" > "/dev/stderr";
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exit 2
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}
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END {
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do {
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moved = 0
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for (i = 0; i < dnt; ++i) {
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for (j = 1; j < cnt; ++j) {
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if (all[j] == from[i]) {
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for (k = j + 1; k < cnt; ++k) {
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if (all[k] == to[i]) {
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break;
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}
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}
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if (k < cnt) {
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for (l = k - 1; l >= j; --l) {
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all[l + 1] = all[l]
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}
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all[j] = to[i]
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break;
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}
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}
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}
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if (j < cnt) {
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moved = 1
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break
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}
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}
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} while (moved);
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# Make sure we list "elf" last.
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saw_elf = 0;
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printf "sorted-subdirs :=";
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for (i = 1; i < cnt; ++i) {
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if (all[i] in inhibit)
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continue;
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if (all[i] == "elf")
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saw_elf = 1;
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else
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printf " %s", all[i];
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}
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printf "%s\n", saw_elf ? " elf" : "";
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print "sysd-sorted-done := t"
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}
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