静态交叉编译 Android 的 OpenVPN
准备工作
编译
#首先从官网下载合适的版本
openvpn_version=2.4.8
wget "https://swupdate.openvpn.org/community/releases/openvpn-$openvpn_version.tar.gz"
#解压缩到当前目录
tar xf "openvpn-$openvpn_version.tar.gz"
#进入编译目录
cd openvpn-$openvpn_version
#设置依赖库路径
LIB_32_OPENSSL=~/android-arm
LIB_32_LZO=~/android-arm
LIB_32_LZ4=~/android-arm
LIB_64_OPENSSL=~/android-arm64
LIB_64_LZO=~/android-arm64
LIB_64_LZ4=~/android-arm64
#静态编译 32 位执行文件
./configure --host=arm-linux-androideabi --enable-static --disable-shared --disable-plugins --disable-debug \
IFCONFIG="/system/bin/ifconfig" \
OPENSSL_LIBS="-L$LIB_32_OPENSSL/lib -lssl -lcrypto" \
OPENSSL_CFLAGS="-I$LIB_32_OPENSSL/include" \
LZO_LIBS="-L$LIB_32_LZO/lib -llzo2" \
LZ4_LIBS="-L$LIB_32_LZ4/lib -llz4"
make LIBS='-all-static' -j $(grep "cpu cores" /proc/cpuinfo | wc -l)
mv src/openvpn/openvpn ../openvpn_arm
make clean
#静态编译 64 位执行文件
./configure --host=aarch64-linux-android --enable-static --disable-shared --disable-plugins --disable-debug \
IFCONFIG="/system/bin/ifconfig" \
OPENSSL_LIBS="-L$LIB_64_OPENSSL/lib -lssl -lcrypto" \
OPENSSL_CFLAGS="-I$LIB_64_OPENSSL/include" \
LZO_LIBS="-L$LIB_64_LZO/lib -llzo2" \
LZ4_LIBS="-L$LIB_64_LZ4/lib -llz4"
make LIBS='-all-static -ldl' -j $(grep "cpu cores" /proc/cpuinfo | wc -l)
mv src/openvpn/openvpn ../openvpn_arm64
返回上级目录，去掉执行文件的符号信息和调试信息，减小体积
cd ..
aarch64-linux-android-strip openvpn_arm*
然后就可以删除源文件了
rm -rf "openvpn-$openvpn_version" "openvpn-$openvpn_version.tar.gz"