From cf15e14727fc7f94f43df1140d436edffcf278fe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=BA=90=E6=96=87=E9=9B=A8?=
 <41315874+fumiama@users.noreply.github.com>
Date: Mon, 16 Feb 2026 15:50:54 +0800
Subject: [PATCH] doc: add more ex

---
 README.md | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 2c4d579..63d0d0b 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ tls.Client(terasu.NewConn(conn), &tls.Config{
 }).Handshake()
 ```
 
-## Custom Plugin (Linux Only)
+## Custom Plugin
 
 Custom plugin code is located in the `ext/custom` directory. You can write and build your own plugin.
 
@@ -28,5 +28,26 @@ Custom plugin code is located in the `ext/custom` directory. You can write and b
 2. Build the plugin:
 
 ```bash
-GOOS=linux go build -o terasu.plugin.so -buildmode=plugin -ldflags="-s -w" -trimpath ./ext/custom
+go build -o terasu.plugin.so -buildmode=plugin -ldflags="-s -w" -trimpath ./ext/custom
+```
+
+### Example 1. Build for OpenWrt arm64
+```bash
+sudo apt-get update
+sudo apt-get install -y build-essential module-assistant gcc-9-multilib-i686-linux-gnu g++-9-multilib-i686-linux-gnu
+wget -nv https://downloads.openwrt.org/releases/23.05.3/targets/ipq807x/generic/openwrt-sdk-23.05.3-ipq807x-generic_gcc-12.3.0_musl.Linux-x86_64.tar.xz
+tar -xJf openwrt-sdk-23.05.3-ipq807x-generic_gcc-12.3.0_musl.Linux-x86_64.tar.xz
+mv openwrt-sdk-23.05.3-ipq807x-generic_gcc-12.3.0_musl.Linux-x86_64 op23053-ipq807x
+rm openwrt-sdk-23.05.3-ipq807x-generic_gcc-12.3.0_musl.Linux-x86_64.tar.xz
+
+PATH=$PATH:`pwd`/op23053-ipq807x/staging_dir/toolchain-aarch64_cortex-a53_gcc-12.3.0_musl/bin/
+export PATH
+export STAGING_DIR=`pwd`/op23053-ipq807x/staging_dir/toolchain-aarch64_cortex-a53_gcc-12.3.0_musl/
+export CGO_CFLAGS=$CGO_CFLAGS" -fuse-ld=bfd"
+echo $CGO_CFLAGS
+export CGO_LDFLAGS=$CGO_LDFLAGS" -fuse-ld=bfd"
+echo $CGO_LDFLAGS
+export GOGCCFLAGS=$GOGCCFLAGS" -fuse-ld=bfd"
+echo $GOGCCFLAGS
+CGO_ENABLED=1 GOOS=linux GOARCH=arm64 GOARM=8 CC=aarch64-openwrt-linux-gcc CXX=aarch64-openwrt-linux-g++ AR=aarch64-openwrt-linux-ar go build -o terasu.plugin.so -buildmode=plugin -ldflags="-s -w" -trimpath ./ext/custom
 ```