编译`libCurl`

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`)

相关配置
- curl: 7.67.0
- openssl: 1.0.2r
- zlib: 1.2.11
- ndk: android-ndk-r13b
- os: Ubuntu 16.04

编译脚本

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

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
```

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

topone37/CompileCurlAndroid

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