From 5f13fb683b9b648db557c3e4e88835c917d90b57 Mon Sep 17 00:00:00 2001
From: YobeZhou <smilezyb@163.com>
Date: Mon, 13 Jan 2025 12:45:16 +0800
Subject: [PATCH] feat(cmake): add user cross compile setup

---
 README.md                      | 10 +++++++++-
 user_cross_compile_setup.cmake | 15 +++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 user_cross_compile_setup.cmake

diff --git a/README.md b/README.md
index e46deec..a673f45 100644
--- a/README.md
+++ b/README.md
@@ -59,13 +59,21 @@ To use wayland, adjust `lv_conf.h` as follows:
 #define LV_USE_WAYLAND		1
 ```
 
-
 ### cmake
 
+1. gcc compiler:
+
 ```
 cmake -B build -S .
 make -C build -j
 ```
+2. Cross compiler:
+
+```
+vim ./user_cross_compile_setup.cmake
+cmake -DCMAKE_TOOLCHAIN_FILE=./user_cross_compile_setup.cmake -B build -S .
+make  -C build -j
+```
 
 ### Makefile
 
diff --git a/user_cross_compile_setup.cmake b/user_cross_compile_setup.cmake
new file mode 100644
index 0000000..ba42189
--- /dev/null
+++ b/user_cross_compile_setup.cmake
@@ -0,0 +1,15 @@
+# Usage:
+# cmake -DCMAKE_TOOLCHAIN_FILE=./user_cross_compile_setup.cmake -B build -S .
+# make  -C build -j
+
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR arm)
+
+set(tools /home/ubuntu/Your_SDK/prebuilt/rootfsbuilt/arm/toolchain-glibc-gcc/toolchain)
+set(CMAKE_C_COMPILER ${tools}/bin/arm-openwrt-linux-gnueabi-gcc)
+set(CMAKE_CXX_COMPILER ${tools}/bin/arm-openwrt-linux-gnueabi-g++)
+
+# If necessary, set STAGING_DIR
+# if not work, please try(in shell command): export STAGING_DIR=/home/ubuntu/Your_SDK/out/xxx/openwrt/staging_dir/target
+#set(ENV{STAGING_DIR} "/home/ubuntu/Your_SDK/out/xxx/openwrt/staging_dir/target")
+