Replace remote with local repo

scripts/mkp224o-build.sh

@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+# Build cathugger/mkp224o (Tor v3 vanity .onion key generator) into vendor/mkp224o/mkp224o.
+# Requires: git, make, gcc or clang, autoconf, pkg-config, libsodium-dev (Debian: libsodium-dev)
+#
+#   bash scripts/mkp224o-build.sh
+#
+set -euo pipefail
+
+REPO="$(cd "$(dirname "$0")/.." && pwd)"
+VEND="${REPO}/vendor/mkp224o"
+BIN="${VEND}/mkp224o"
+
+if [[ -x "${BIN}" ]]; then
+  echo "Already built: ${BIN}"
+  exit 0
+fi
+
+if ! command -v git >/dev/null 2>&1; then
+  echo "Install git and retry."
+  exit 1
+fi
+
+mkdir -p "${REPO}/vendor"
+if [[ ! -d "${VEND}/.git" ]]; then
+  echo "[*] Cloning mkp224o..."
+  git clone --depth 1 https://github.com/cathugger/mkp224o.git "${VEND}"
+fi
+
+cd "${VEND}"
+if [[ ! -f "./configure" ]]; then
+  if [[ -f "./autogen.sh" ]]; then
+    echo "[*] autogen.sh..."
+    ./autogen.sh
+  else
+    echo "No configure/autogen in ${VEND}"
+    exit 1
+  fi
+fi
+
+if [[ ! -f "./Makefile" ]]; then
+  echo "[*] configure..."
+  # Prefer AMD64 fast curve implementation when available
+  if ./configure --help 2>/dev/null | grep -q 'enable-amd64-64-24k'; then
+    ./configure --enable-amd64-64-24k
+  else
+    ./configure
+  fi
+fi
+
+echo "[*] make -j \$(nproc)..."
+make -j"$(nproc)"
+
+if [[ ! -x "${BIN}" ]]; then
+  echo "Build failed: ${BIN} not executable"
+  exit 1
+fi
+
+echo "Built: ${BIN}"
+echo "Mine a prefix: bash ${REPO}/scripts/vanity-onion-mine.sh <prefix>"