From c2cc5c054547b8b9dfa284ebadd51b38c35ecf0c Mon Sep 17 00:00:00 2001
From: Job Snijders <job@sobornost.net>
Date: Mon, 4 Dec 2023 12:56:35 +0000
Subject: [PATCH] Take advantage of autotools in BSD environments

Taken from https://github.com/bgp/bgpq4/blob/main/bootstrap
---
 autogen.sh | 43 +++++++++++++++++++++++++++++++++++++++----
 1 file changed, 39 insertions(+), 4 deletions(-)

diff --git a/autogen.sh b/autogen.sh
index d9debd26..15e0846f 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,7 +1,42 @@
 #!/bin/sh
+#
+# Script to help bootstrap the build system when checked out from git
+#
 
-# Hello.
-# Run this file to generate the configure script.
-# You'll need Autoconf and Automake installed!
+bsd_environment() {
+	# Based on https://github.com/rvm/rvm/blob/59fe3b39f0fb5ae01ed5b9aa187201080815ac16/scripts/functions/build_config_system#L123
+	if [ -z "${AUTOCONF_VERSION}" ]
+	then
+		export AUTOCONF_VERSION
+		AUTOCONF_VERSION="$(
+		    ls -1 /usr/local/bin/autoreconf-* |
+		    awk -F- '{print $NF}' |
+		    sort |
+		    tail -n 1
+		)"
+		echo "Using autoconf version: $AUTOCONF_VERSION"
+	fi
 
-autoreconf --install --force
+	if [ -z "${AUTOMAKE_VERSION}" ]
+	then
+		export AUTOMAKE_VERSION
+		# FreeBSD might have automake-wrapper
+		AUTOMAKE_VERSION="$(
+		    ls -1 /usr/local/bin/automake-1* |
+		    awk -F- '{print $NF}' |
+		    sort |
+		    tail -n 1
+		)"
+		echo "Using automake version: $AUTOMAKE_VERSION"
+	fi
+}
+
+# Use the uname string to figure out if this is a BSD
+case "$(uname)" in
+	*BSD*) bsd_environment ;;
+esac
+
+test -n "$srcdir" || srcdir="$(dirname "$0")"
+test -n "$srcdir" || srcdir=.
+
+autoreconf --force --install --verbose "$srcdir"
-- 
2.47.2