本次编译,开启Openssl,Zlib等功能选项 (高版本的ndk中,已经自带了zlib`)

1. 相关配置

   • curl: 7.67.0
   • openssl: 1.0.2r
   • zlib: 1.2.11
   • ndk: android-ndk-r13b
   • os: Ubuntu 16.04

2. 编译脚本

   1. build_zip.sh

      #!/bin/bash
      
      BASE_PATH=$(
      	cd "$(dirname $0)"
      	pwd
      )
      ZLIB_PATH="xxx/zlib"
      BUILD_PATH="xxx/build"
      
      ## Android NDK
      export NDK_ROOT=/xxx/android-ndk-r13b
      
      
      rm -rf $BUILD_PATH/zlib
      mkdir -p $BUILD_PATH/zlib
      # check system
      host=$(uname | tr 'A-Z' 'a-z')
      if [ $host = "darwin" ] || [ $host = "linux" ]; then
      	echo "system: $host"
      else
      	echo "unsupport system, only support Mac OS X and Linux now."
      	exit 1
      fi
      
      
      ## Build zlib
      cd $ZLIB_PATH
      ABI=armeabi-v7a
      SYSROOT=$NDK_ROOT/platforms/android-12/arch-arm
      TOOLCHAIN=$NDK_ROOT/toolchains/arm-linux-androideabi-4.9/prebuilt/$host-x86_64/bin
      TARGET=arm-linux-androideabi
      CFLAGS=-march=armv7-a -mfloat-abi=softfp -mfpu=neon
      export CFLAGS="-I$SYSROOT/usr/include --sysroot=$SYSROOT $CFLAGS"
      # zlib configure
      export CROSS_PREFIX="$TOOLCHAIN/$TARGET-"
      # config
      mkdir -p  $BUILD_PATH/zlib/$ABI
      ./configure --prefix=$BUILD_PATH/zlib/$ABI
      
      make clean
      make -j4
      make install
      
      exit 0

   2. build_openssl.sh

      编译openssl需要注意,1.1.x的版本,在执行Configure命令时候,不支持android,只有android-arm等其他选项,为了方便,我这边直接使用的1.0.x版本

      #!/bin/bash
      # 前面环境变量部分基本一致,唯一不一样的是,Configure部分
      #....
      ./Configure android no-shared --prefix=$BUILD_PATH/openssl/$ABI
      

   3. build_curl_with_ssl_and_zlib.sh

      #!/bin/bash
      # 前面环境变量部分基本一致,唯一不一样的是,Configure部分
      ./configure --host=$TARGET \
      		--prefix=$BUILD_PATH/curl/$ABI \
      		--with-zlib=$BUILD_PATH/zlib/$ABI \
      		--with-ssl=$BUILD_PATH/openssl/$ABI \
      		--enable-static \
      		--enable-shared \
      		--disable-verbose \
      		--enable-threaded-resolver \
      		--enable-libgcc \
      		--enable-ipv6
      export AR="$TOOLCHAIN/$TARGET-ar"		
      	# 合并.a文件到libcurl.a
      	
      	# 从各个.a提取出.o文件,然后生成.a
      	
      	# extract *.o from libcurl.a
          $AR -x $BUILD_PATH/curl/$ABI/lib/libcurl.a
      	# extract *.o from libssl.a & libcrypto.a
      	cd $BASE_PATH/obj/$ABI/openssl
      	$AR -x $BUILD_PATH/openssl/$ABI/lib/libssl.a
      	$AR -x $BUILD_PATH/openssl/$ABI/lib/libcrypto.a
      	
      	# extract *.o from libz.a
      	cd $BASE_PATH/obj/$ABI/zlib
      	$AR -x $BUILD_PATH/zlib/$ABI/lib/libz.a
      	
      	# combine *.o to libcurl.a
      	cd $BASE_PATH
      	$AR -cr $BASE_PATH/libs/$ABI/libcurl.a $BASE_PATH/obj/$ABI/curl/*.o $BASE_PATH/obj/$ABI/openssl/*.o $BASE_PATH/obj/$ABI/zlib/*.o