今天在Orin NX上进行GPU版本的llama.cpp编译时，遇到了下述问题：
cmake -B build -DGGML_CUDA=ON
-- Warning: ccache not found - consider installing it for faster compilation or disable this warning with GGML_CCACHE=OFF
-- CMAKE_SYSTEM_PROCESSOR: aarch64
-- GGML_SYSTEM_ARCH: ARM
-- Including CPU backend
-- Found OpenMP_C: -fopenmp
-- Found OpenMP_CXX: -fopenmp
-- Found OpenMP: TRUE
-- ARM detected
-- ARM -mcpu not found, -mcpu=native will be used
-- ARM feature FMA enabled
-- Adding CPU backend variant ggml-cpu: -mcpu=native
CMake Error at ggml/src/ggml-cuda/CMakeLists.txt:1 (cmake_minimum_required):CMake 3.18 or higher is required. You are running version 3.16.3-- Configuring incomplete, errors occurred!
See also "/home/amov/Desktop/llama.cpp/build/CMakeFiles/CMakeOutput.log".
See also "/home/amov/Desktop/llama.cpp/build/CMakeFiles/CMakeError.log".
原因是cmake版本过低，需要升级至>=3.18版本，具体流程如下：
- 首先在官网下载对应的二进制文件，我需要安装4.0.0版本，由于Orin NX为arm架构，这里我选择aarch64后缀的脚本：
cmake-4.0.0-linux-aarch64.sh
- 下载下来后，使用
chmod +x cmake-4.0.0-linux-aarch64.sh给予可执行权限，然后使sudo sh cmake-4.0.0-linux-aarch64.sh进行解压（这里需要注意安装时的路径提示）
- 记住安装路径后，
export PATH=/"your cmake path"/bin:$PATH，我这里是export PATH=/home/amov/Desktop/cmake-4.0.0-linux-aarch64/bin:$PATH
- 而后执行以便永久生效：
echo 'export PATH=/opt/cmake/bin:$PATH' >>~/.bashrc
source ~/.bashrc
- 最后
cmake --version检查是否升级成功
参考：https://blog.csdn.net/u013172930/article/details/148203298
