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-rwxr-xr-xdebian/pg_config.pl76
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diff --git a/debian/pg_config.pl b/debian/pg_config.pl
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+#!/usr/bin/perl
+
+# Perl reimplementation of PostgreSQL's pg_config binary.
+# We provide this as /usr/bin/pg_config to support cross-compilation using
+# libpq-dev. Also, this makes the two installed pg_config copies not conflict
+# via their debugging symbols.
+#
+# This code is released under the terms of the PostgreSQL License.
+# Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
+# Author: Christoph Berg
+
+use strict;
+use warnings;
+
+# no arguments, print all items
+if (@ARGV == 0) {
+ while (<DATA>) {
+ last if /^$/; # begin of help section
+ print;
+ }
+ exit 0;
+}
+
+# --help or -?
+if (grep {$_ =~ /^(--help|-\?)$/} @ARGV) {
+ while (<DATA>) {
+ last if /^$/; # begin of help section
+ }
+ print; # include empty line in output
+ while (<DATA>) {
+ next if /^Report bugs/; # Skip bug address in the perl version
+ print;
+ }
+ exit 0;
+}
+
+# specific value(s) requested
+my %options;
+my $help;
+while (<DATA>) {
+ last if /^$/; # begin of help section
+ /^(\S+) = (.*)/ or die "malformatted data item";
+ $options{'--' . lc $1} = $2;
+}
+
+foreach my $arg (@ARGV) {
+ unless ($options{$arg}) {
+ print "pg_config: invalid argument: $arg\n";
+ print "Try \"pg_config --help\" for more information.\n";
+ exit 1;
+ }
+ print "$options{$arg}\n";
+}
+
+exit 0;
+
+# The DATA section consists of the `pg_config` output (one KEY = value item per
+# line), and the `pg_config --help` text. The first --help line is empty, which
+# we use to detect the beginning of the help section.
+
+__DATA__
+INCLUDEDIR = /usr/include/postgresql
+
+pg_config provides information about the installed version of PostgreSQL.
+
+Usage:
+ pg_config [OPTION]...
+
+Options:
+ --includedir show location of C header files of the client
+ interfaces
+ -?, --help show this help, then exit
+
+With no arguments, all known items are shown.
+
+Report bugs to <pgsql-bugs@postgresql.org>.