下载 icu 源码

进入 icu4c/source 文件夹

./configure --prefix=/xx/xxx/icu
make && make install

export PATH=/xx/xxx/icu/include:$PATH
export LD_LIBRARY_PATH=/xx/xxx/icu/lib:$LD_LIBRARY_PATH

# 或者

export PKG_CONFIG_PATH=/xx/xxx/icu/lib/pkgconfig:$PKG_CONFIG_PATH