From c0896258016c38c700dcd8f3457a2f26becfea2b Mon Sep 17 00:00:00 2001
From: "slamm%netscape.com" <slamm%netscape.com>
Date: Wed, 21 Apr 1999 01:11:55 +0000
Subject: [PATCH] add partial replacement for AC_OUTPUT()

---
 build/autoconf/acoutput-fast.pl | 144 ++++++++++++++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100755 build/autoconf/acoutput-fast.pl

diff --git a/build/autoconf/acoutput-fast.pl b/build/autoconf/acoutput-fast.pl
new file mode 100755
index 00000000000..097677524fb
--- /dev/null
+++ b/build/autoconf/acoutput-fast.pl
@@ -0,0 +1,144 @@
+#! /usr/bin/env perl
+#
+# The contents of this file are subject to the Netscape Public License
+# Version 1.0 (the "NPL"); you may not use this file except in
+# compliance with the NPL.  You may obtain a copy of the NPL at
+# http://www.mozilla.org/NPL/
+#
+# Software distributed under the NPL is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+# for the specific language governing rights and limitations under the
+# NPL.
+#
+# The Initial Developer of this code under the NPL is Netscape
+# Communications Corporation.  Portions created by Netscape are
+# Copyright (C) 1999 Netscape Communications Corporation.  All Rights
+# Reserved.
+#
+
+# acoutput-fast.pl - Quickly create makefiles that are in a common format.
+#
+# Most of the makefiles in mozilla only refer to two configure variables:
+#     @srcdir@
+#     @top_srcdir@
+# However, configure does not know any better and it runs sed on each file
+# with over 150 replacement rules (slow as molasses).
+#
+# This script takes a list of makefiles as input. For example,
+#   
+#     echo $MAKEFILES | acoutput-fast.pl
+#
+# The script creates each Makefile that only references @srcdir@ and
+# @top_srcdir@. For other files, it lists them in a shell command that is
+# printed to stdout:
+#
+#     CONFIG_FILES="unhandled_files..."; export CONFIG_FILES
+#
+# This command can be used to have config.status create the unhandled
+# files. For example,
+#
+#     eval "echo $MAKEFILES | acoutput-fast.pl"
+#     AC_OUTPUT($MAKEFILES)
+#
+# Send comments, improvements, bugs to Steve Lamm (slamm@netscape.com).
+
+#use File::Basename;
+sub dirname {
+  my $dir = $_[0];
+  return '.' if not $dir =~ m%/%;
+  $dir =~ s%/[^/][^/]*$%%;
+  return $dir;
+}
+
+$ac_given_srcdir = $0;
+$ac_given_srcdir =~ s|/?build/autoconf/.*$||;
+$ac_given_srcdir = '.' if $ac_given_srcdir eq '';
+
+# Read list of makefiles from the stdin or,
+#   from files listed on the command-line.
+#
+@makefiles=();
+push @makefiles, split while (<>);
+
+# Create all the directories at once.
+#   This can be much faster than calling mkdir() for each one.
+@dirs_to_create = ();
+%have_seen = ();
+foreach $ac_file (@makefiles) {
+  next if $ac_file =~ /:/;
+  $ac_dir = dirname($ac_file);
+  next if defined($have_seen{$ac_dir});
+  push @dirs_to_create, $ac_dir if not -d $ac_dir;
+  $have_seen{$ac_dir} = 1;
+}
+system "mkdir ".join(' ',@dirs_to_create) if $#dirs_to_create >= 0;
+
+# Output the makefiles.
+#
+@unhandled=();
+foreach $ac_file (@makefiles) {
+  if (not $ac_file =~ /Makefile$/ or $ac_file =~ /:/) {
+    push @unhandled, $ac_file;
+    next;
+  }
+  $ac_file_in = "$ac_given_srcdir/$ac_file.in";
+  $ac_dir = dirname($ac_file);
+  if ($ac_dir eq '.') {
+    $ac_dir_suffix = '';
+    $ac_dots = '';
+  } else {
+    $ac_dir_suffix = "/$ac_dir";
+    $ac_dir_suffix =~ s%^/\./%/%;
+    $ac_dots = $ac_dir_suffix;
+    $ac_dots =~ s%/[^/]*%../%g;
+  }
+  if ($ac_given_srcdir eq '.') {
+    $srcdir = '.';
+    if ($ac_dots eq '') {
+      $top_srcdir = '.'
+    } else {
+      $top_srcdir = $ac_dots;
+      $top_srcdir =~ s%/$%%;
+    }
+  } elsif ($ac_given_srcdir =~ m%^/%) {
+    $srcdir     = "$ac_given_srcdir$ac_dir_suffix";
+    $top_srcdir = "$ac_given_srcdir";
+  } else {
+    $srcdir     = "$ac_dots$ac_given_srcdir$ac_dir_suffix";
+    $top_srcdir = "$ac_dots$ac_given_srcdir";
+  }
+
+#  mkdir $subdir, 0777 if not -d $subdir;
+
+  open (INFILE, "<$ac_file_in")
+    or die "Unable to open $ac_file_in\n";
+  open (OUTFILE, ">$ac_file")
+    or die "Unable to create $ac_file\n";
+
+  print STDERR "creating $ac_file\n";
+
+  while (<INFILE>) {
+    if (/\@[_a-zA-Z]*\@.*\@[_a-zA-Z]*\@/) {
+      #warn "Two defines on a line:$ac_file:$.:$_";
+      push @unhandled, $ac_file;
+      last;
+    }
+
+    s/\@srcdir\@/$srcdir/;
+    s/\@top_srcdir\@/$top_srcdir/;
+
+    if (/\@[_a-zA-Z]*\@/) {
+      #warn "Unknown variable:$ac_file:$.:$_";
+      push @unhandled, $ac_file;
+      last;
+    }
+    print OUTFILE;
+  }
+  close INFILE;
+  close OUTFILE;
+}
+
+# Print the shell command to be evaluated by configure.
+#
+print "CONFIG_FILES=\"".join(' ', @unhandled)."\"; export CONFIG_FILES\n";
+