1#
2# mksyms.awk
3#
4# Extract symbols to export from C-header files.
5# output in version-script format for linking shared libraries.
6#
7# Copyright (C) 2008 Michael Adam <obnox@samba.org>
8#
9BEGIN {
10	inheader=0;
11	current_file="";
12	print "#"
13	print "# This file is automatically generated with \"make symbols\". DO NOT EDIT "
14	print "#"
15	print "{"
16	print "\tglobal:"
17}
18
19END {
20	print""
21	print "\tlocal: *;"
22	print "};"
23}
24
25{
26	if (FILENAME!=current_file) {
27		print "\t\t# The following definitions come from",FILENAME
28		current_file=FILENAME
29	}
30	if (inheader) {
31		if (match($0,"[)][^()]*[;][ \t]*$")) {
32			inheader = 0;
33		}
34		next;
35	}
36}
37
38/^static/ || /^[ \t]*typedef/ || !/^[a-zA-Z\_]/ {
39	next;
40}
41
42/^extern[ \t]+[^()]+[;][ \t]*$/ {
43	gsub(/[^ \t]+[ \t]+/, "");
44	sub(/[;][ \t]*$/, "");
45	printf "\t\t%s;\n", $0;
46	next;
47}
48
49# look for function headers:
50{
51	gotstart = 0;
52	if ($0 ~ /^[A-Za-z_][A-Za-z0-9_]+/) {
53	gotstart = 1;
54	}
55	if(!gotstart) {
56		next;
57	}
58}
59
60/[_A-Za-z0-9]+[ \t]*[(].*[)][^()]*;[ \t]*$/ {
61	sub(/[(].*$/, "");
62	gsub(/[^ \t]+[ \t]+/, "");
63	gsub(/^[*]+/, "");
64	printf "\t\t%s;\n",$0;
65	next;
66}
67
68/[_A-Za-z0-9]+[ \t]*[(]/ {
69	inheader=1;
70	sub(/[(].*$/, "");
71	gsub(/[^ \t]+[ \t]+/, "");
72	gsub(/^[*]/, "");
73	printf "\t\t%s;\n",$0;
74	next;
75}
76
77