Updating code

reviving this project

autogen.sh

@@ -1,16 +1,29 @@
 #!/bin/sh
 # Copyright (c) 2013-2016 The Bitcoin Core developers
+# Copyright (c) 2026 Agrarian Developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 export LC_ALL=C
-set -e
-srcdir="$(dirname $0)"
+
+# Fail fast on errors and undefined vars. (Note: 'pipefail' is not POSIX sh.)
+set -eu
+
+srcdir="$(CDPATH= cd -- "$(dirname -- "$0")" && pwd -P)"
 cd "$srcdir"
-if [ -z ${LIBTOOLIZE} ] && GLIBTOOLIZE="`which glibtoolize 2>/dev/null`"; then
-  LIBTOOLIZE="${GLIBTOOLIZE}"
-  export LIBTOOLIZE
+
+# Prefer glibtoolize on macOS if LIBTOOLIZE isn't already set.
+if [ -z "${LIBTOOLIZE:-}" ]; then
+    GLIBTOOLIZE="$(command -v glibtoolize 2>/dev/null || true)"
+    if [ -n "$GLIBTOOLIZE" ]; then
+        LIBTOOLIZE="$GLIBTOOLIZE"
+        export LIBTOOLIZE
+    fi
 fi
-which autoreconf >/dev/null || \
-  (echo "configuration failed, please install autoconf first" && exit 1)
+
+if ! command -v autoreconf >/dev/null 2>&1; then
+    echo "configuration failed: please install autoconf first" >&2
+    exit 1
+fi
+
 autoreconf --install --force --warnings=all