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#!env perl -w
#
# Copyright 1995,2001,2002,2003,2004,2005,2009 by the Massachusetts Institute of Technology.
# All Rights Reserved.
#
# Export of this software from the United States of America may
# require a specific license from the United States Government.
# It is the responsibility of any person or organization contemplating
# export to obtain such a license before exporting.
#
# WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
# distribute this software and its documentation for any purpose and
# without fee is hereby granted, provided that the above copyright
# notice appear in all copies and that both that copyright notice and
# this permission notice appear in supporting documentation, and that
# the name of M.I.T. not be used in advertising or publicity pertaining
# to distribution of the software without specific, written prior
# permission. Furthermore if you modify this software you must label
# your software as modified software and not distribute it in such a
# fashion that it might be confused with the original M.I.T. software.
# M.I.T. makes no representations about the suitability of
# this software for any purpose. It is provided "as is" without express
# or implied warranty.
#
eval 'exec perl -S $0 ${1+"$@"}'
if 0;
$0 =~ s/^.*?(\w+)[\.\w+]*$/$1/;
# Input: srctop thisdir srcdir buildtop stlibobjs
# Notes: myrelativedir is something like "lib/krb5/asn.1" or ".".
# stlibobjs will usually be empty, or include spaces.
# A typical set of inputs, produced with srcdir=.. at top level:
#
# top_srcdir = ../../../util/et/../..
# thisdir = util/et
# srcdir = ../../../util/et
# BUILDTOP = ../..
# STLIBOBJS = error_message.o et_name.o com_err.o
my($top_srcdir,$thisdir,$srcdir,$BUILDTOP,$STLIBOBJS) = @ARGV;
if (0) {
print STDERR "top_srcdir = $top_srcdir\n";
print STDERR "BUILDTOP = $BUILDTOP\n";
print STDERR "STLIBOBJS = $STLIBOBJS\n";
}
#$srcdirpat = quotemeta($srcdir);
my($extrasuffixes) = ($STLIBOBJS ne "");
sub my_qm {
my($x) = @_;
$x = quotemeta($x);
$x =~ s,\\/,/,g;
return $x;
}
sub strrep {
my($old,$new,$s) = @_;
my($l) = "strrep('$old','$new','$s')";
my($out) = "";
while ($s ne "") {
my($i) = index($s, $old);
if ($i == -1) {
$out .= $s;
$s = "";
} else {
$out .= substr($s, 0, $i) . $new;
if (length($s) > $i + length($old)) {
$s = substr($s, $i + length($old));
} else {
$s = "";
}
}
}
# print STDERR "$l = '$out'\n";
return $out;
}
sub do_subs {
local($_) = @_;
s,\\$, \\,g; s, + \\$, \\,g;
s,//+,/,g; s, \./, ,g;
if ($extrasuffixes) {
# Only care about the additional prefixes if we're building
# shared libraries.
s,^([a-zA-Z0-9_\-]*)\.o:,$1.so $1.po \$(OUTPRE)$1.\$(OBJEXT):,;
} else {
s,^([a-zA-Z0-9_\-]*)\.o:,\$(OUTPRE)$1.\$(OBJEXT):,;
}
# Recognize $(top_srcdir) and variants.
my($srct) = $top_srcdir . "/";
$_ = strrep(" $srct", " \$(top_srcdir)/", $_);
# s, $pat, \$(top_srcdir)/,go;
while ($srct =~ m,/[a-z][a-zA-Z0-9_.\-]*/\.\./,) {
$srct =~ s,/[a-z][a-zA-Z0-9_.\-]*/\.\./,/,;
$_ = strrep(" $srct", " \$(top_srcdir)/", $_);
}
# Now try to produce pathnames relative to $(srcdir).
if ($thisdir eq ".") {
# blah
} else {
my($pat) = " \$(top_srcdir)/$thisdir/";
my($out) = " \$(srcdir)/";
$_ = strrep($pat, $out, $_);
while ($pat =~ m,/[a-z][a-zA-Z0-9_.\-]*/$,) {
$pat =~ s,/[a-z][a-zA-Z0-9_.\-]*/$,/,;
$out .= "../";
if ($pat ne " \$(top_srcdir)/") {
$_ = strrep($pat, $out, $_);
}
}
}
# Now substitute for BUILDTOP:
$_ = strrep(" $BUILDTOP/", " \$(BUILDTOP)/", $_);
return $_;
}
sub do_subs_2 {
local($_) = @_;
# Add a trailing space.
s/$/ /;
# Remove excess spaces.
s/ */ /g;
# Delete headers external to the source and build tree.
s; /[^ ]*;;g;
# Remove foo/../ sequences.
while (m/\/[a-z][a-z0-9_.\-]*\/\.\.\//) {
s//\//g;
}
# Use VPATH.
s;\$\(srcdir\)/([^ /]* );$1;g;
$_ = &uniquify($_);
# Allow override of some util dependencies in case local tools are used.
s;\$\(BUILDTOP\)/include/com_err.h ;\$(COM_ERR_DEPS) ;g;
s;\$\(BUILDTOP\)/include/ss/ss.h \$\(BUILDTOP\)/include/ss/ss_err.h ;\$(SS_DEPS) ;g;
s;\$\(BUILDTOP\)/include/db-config.h \$\(BUILDTOP\)/include/db.h ;\$(DB_DEPS) ;g;
s;\$\(BUILDTOP\)/include/verto.h ;\$(VERTO_DEPS) ;g;
if ($thisdir eq "util/gss-kernel-lib") {
# Here com_err.h is used from the current directory.
s;com_err.h ;\$(COM_ERR_DEPS) ;g;
}
$_ = &uniquify($_);
# Delete trailing whitespace.
s; *$;;g;
return $_;
}
sub uniquify {
# Apparently some versions of gcc -- like
# "gcc version 3.4.4 20050721 (Red Hat 3.4.4-2)"
# -- will sometimes emit duplicate header file names.
local($_) = @_;
my(@sides) = split ": ", $_;
my($lhs) = "";
if ($#sides == 1) {
$lhs = $sides[0] . ": ";
$_ = $sides[1];
}
my(@words) = split " ", $_;
my($w);
my($result) = "";
my(%seen);
undef %seen;
foreach $w (sort { $a cmp $b; } @words) {
next if defined($seen{$w});
$seen{$w} = 1;
if ($result ne "") { $result .= " "; }
$result .= $w;
}
return $lhs . $result . " ";
}
sub split_lines {
local($_) = @_;
s/(.{50}[^ ]*) /$1 \\\n /g;
return $_ . "\n";
}
print <<EOH ;
#
# Generated makefile dependencies follow.
#
EOH
my $buf = '';
while (<STDIN>) {
# Strip newline.
chop;
next if /^\s*#/;
# Do directory-specific path substitutions on each filename read.
$_ = &do_subs($_);
if (m/\\$/) {
chop;
$buf .= $_;
} else {
$buf = &do_subs_2($buf . $_);
print &split_lines($buf);
$buf = '';
}
}
exit 0;
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