openwrt编译smartdns_ubuntu下交叉编译PandoraBox/潘多拉 k2p/mipsel软件openssl和smartdns

交叉编译环境配置，使用PandoraBox提供的SDK：apt install build-essential -y

wget https://downloads.pangubox.com/pandorabox/18.10/targets/ralink/mt7621/PandoraBox-SDK-ralink-mt7621_gcc-5.5.0_uClibc-1.0.x.Linux-x86_64.tar.xz

tar xf PandoraBox-SDK-ralink-mt7621_gcc-5.5.0_uClibc-1.0.x.Linux-x86_64.tar.xz

mv PandoraBox-SDK-ralink-mt7621_gcc-5.5.0_uClibc-1.0.x.Linux-x86_64 PandoraBox

export STAGING_DIR=/root/PandoraBox/staging_dir/

export PKG_CONFIG_PATH=/root/PandoraBox/staging_dir/target-mipsel_1004kc+dsp_uClibc-1.0.x/usr/lib/pkgconfig/

export PATH=$PATH:/root/PandoraBox/staging_dir/toolchain-mipsel_1004kc+dsp_gcc-5.5.0_uClibc-1.0.x/bin/

export CC=mipsel-openwrt-linux-gcc

export RANLIB=mipsel-openwrt-linux-ranlib

export AR=mipsel-openwrt-linux-ar

export LD=mipsel-openwrt-linux-ld

潘多拉SDK自带openssl版本为1.1.0，为使用tls1.3编译安装最新版openssl1.1.1：wget https://www.openssl.org/source/openssl-1.1.1d.tar.gz

tar zxvf openssl-1.1.1d.tar.gz

./config no-asm shared --prefix=/usr/local/openssl-mipsel

sed -i 's/-m64//g' Makefile

make && make install

编译smartdns：git clone https://github.com/pymumu/smartdns.git

cd smartdns/src/

CFLAGS=-I/usr/local/openssl-mipsel/include/ LDFLAGS=-L/usr/local/openssl-mipsel/lib/ make

#不额外安装openssl，使用sdk自带的openssl

#CFLAGS=-I/root/PandoraBox/staging_dir/target-mipsel_1004kc+dsp_uClibc-1.0.x/usr/include/ LDFLAGS=-L/root/PandoraBox/staging_dir/target-mipsel_1004kc+dsp_uClibc-1.0.x/usr/lib/ make

静态编译包含openssl，修改Makefile：ifeq ($(STATIC), yes)

LDFLAGS += -Wl,-dn -lssl -lcrypto -Wl,-dy -lpthread -ldl -lc -lgcc_eh

#LDFLAGS += -Wl,-dn -lssl -lcrypto -Wl,-dy,--whole-archive -lpthread -Wl,--no-whole-archive -ldl -lc -lgcc_eh

静态编译：STATIC=yes CFLAGS=-I/usr/local/openssl-mipsel/include/ LDFLAGS=-L/usr/local/openssl-mipsel/lib/ make

如果以非root运行smartdns且使用ping测速，需设置cap_net_raw，不然不能发送icmp ping：setcap cap_net_raw+eip /usr/local/bin/smartdns

systemd:CapabilityBoundingSet=CAP_NET_RAW

由于使用静态编译openssl1.1文件较大，不使用tls1.3可使用自带的openssl1.0动态编译：CFLAGS=-I/root/PandoraBox/staging_dir/target-mipsel_1004kc+dsp_uClibc-1.0.x/usr/include/ LDFLAGS=-L/root/PandoraBox/staging_dir/target-mipsel_1004kc+dsp_uClibc-1.0.x/usr/lib/ make

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