mac编译iOS版openssl

一、openssl编译结构梳理：

编译openssl ,要先运行configure文件。与普通开源软件不同的是，openssl有多个makefile，makefile ,makefile.bak, makefile.org, makefile.shared。configure要根据平台拷贝对应的makefile。一般情况下，我们需要的是makefile.org。想所以修改openssl的makefile，直接修改已经存在的makefile是无效的，要修改我们需要的org文件。

二、编译时遇到的bug：

多次编译后，运行make install出现错误，提示连接多次。根据提示，我们在point.sh中，找到如下代码：

ln -s "$1" "$2"

在前面检查链接是否存在，如果存在先删除再链接即可。

其实，交叉编译时，doc文件是不需要的，在makefie.org的install选项中，删除doc就好了。

三、编译

脚本：

#!/bin/bash# This script builds the iOS and Mac openSSL libraries# Download openssl http://www.openssl.org/source/ and place the tarball next to this script# Credits:# https://github.com/st3fan/ios-openssl# https://github.com/x2on/OpenSSL-for-iPhone/blob/master/build-libssl.shset -eINSTALL_PATH="/tmp/openssl"usage (){echo "usage: $0 [minimum iOS SDK version (default 8.2)]"exit 127}if [ $1 -e "-h" ]; thenusagefiif [ -z $1 ]; thenSDK_VERSION="8.4"elseSDK_VERSION=$1fiOPENSSL_VERSION="openssl-1.0.2d"DEVELOPER=`xcode-select -print-path`buildMac1(){    echo buildMac -----}buildMac(){ARCH=$1echo "Building ${OPENSSL_VERSION} for ${ARCH}"TARGET="darwin-i386-cc"if [[ $ARCH == "x86_64" ]]; thenTARGET="darwin64-x86_64-cc"fipushd . > /dev/nullcd "${OPENSSL_VERSION}"./Configure ${TARGET} --openssldir="$INSTALL_PATH/${OPENSSL_VERSION}-${ARCH}"make make installmake clean popd > /dev/null}buildIOS1(){    echo build-ios-1-----}buildIOS(){ARCH=$1pushd . > /dev/nullcd "${OPENSSL_VERSION}"  if [[ "${ARCH}" == "i386" || "${ARCH}" == "x86_64" ]]; thenPLATFORM="iPhoneSimulator"elsePLATFORM="iPhoneOS"sed -ie "s!static volatile sig_atomic_t intr_signal;!static volatile intr_signal;!" "crypto/ui/ui_openssl.c"fi  export $PLATFORMexport CROSS_TOP="${DEVELOPER}/Platforms/${PLATFORM}.platform/Developer"export CROSS_SDK="${PLATFORM}${SDK_VERSION}.sdk"export BUILD_TOOLS="${DEVELOPER}"export CC="${BUILD_TOOLS}/usr/bin/gcc -arch ${ARCH}"   echo "Building ${OPENSSL_VERSION} for ${PLATFORM} ${SDK_VERSION} ${ARCH}"if [[ "${ARCH}" == "x86_64" ]]; then    echo "Configure darwin64-x86_64-cc"#./Configure darwin64-x86_64-cc --openssldir="$INSTALL_PATH/${OPENSSL_VERSION}-iOS-${ARCH}" else    echo "Configure iphoneos-cross"#./Configure iphoneos-cross --openssldir="$INSTALL_PATH/${OPENSSL_VERSION}-iOS-${ARCH}" fi# add -isysroot to CC=sed -ie "s!^CFLAG=!CFLAG=-isysroot ${CROSS_TOP}/SDKs/${CROSS_SDK} -miphoneos-version-min=${SDK_VERSION} !" "Makefile"#make #make install make clean popd > /dev/null}echo "Cleaning up"rm -rf include/openssl/* lib/*mkdir -p lib/iOSmkdir -p lib/Macmkdir -p include/openssl/rm -rf "$INSTALL_PATH/${OPENSSL_VERSION}-*"rm -rf "$INSTALL_PATH/${OPENSSL_VERSION}-*.log"function  download_unrar_openssl{    if [ ! -e ${OPENSSL_VERSION}.tar.gz ]; then  echo "Downloading ${OPENSSL_VERSION}.tar.gz"  curl -O https://www.openssl.org/source/${OPENSSL_VERSION}.tar.gz    else  echo "cur version is exit, Using ${OPENSSL_VERSION}.tar.gz"    fi    echo "unrar ${OPENSSL_VERSION}.tar.gz"    tar xfz "${OPENSSL_VERSION}.tar.gz"}#rm -rf "${OPENSSL_VERSION}"if [ ! -d ${OPENSSL_VERSION} ];then    download_unrar_opensslfiecho "check and prepare openssl end"buildIOS "armv7"buildIOS "armv7s"buildIOS "arm64"buildIOS "x86_64"buildIOS "i386"echo "Building iOS libraries"lipo \    "$INSTALL_PATH/${OPENSSL_VERSION}-iOS-armv7/lib/libcrypto.a" \    "$INSTALL_PATH/${OPENSSL_VERSION}-iOS-armv7s/lib/libcrypto.a" \"$INSTALL_PATH/${OPENSSL_VERSION}-iOS-arm64/lib/libcrypto.a" \"$INSTALL_PATH/${OPENSSL_VERSION}-iOS-i386/lib/libcrypto.a" \"$INSTALL_PATH/${OPENSSL_VERSION}-iOS-x86_64/lib/libcrypto.a" \-create -output lib/iOS/libcrypto.alipo \    "$INSTALL_PATH/${OPENSSL_VERSION}-iOS-armv7/lib/libssl.a" \    "$INSTALL_PATH/${OPENSSL_VERSION}-iOS-armv7s/lib/libssl.a" \"$INSTALL_PATH/${OPENSSL_VERSION}-iOS-arm64/lib/libssl.a" \"$INSTALL_PATH/${OPENSSL_VERSION}-iOS-i386/lib/libssl.a" \"$INSTALL_PATH/${OPENSSL_VERSION}-iOS-x86_64/lib/libssl.a" \-create -output lib/iOS/libssl.aecho "Cleaning up"rm -rf $INSTALL_PATH/${OPENSSL_VERSION}-*#rm -rf ${OPENSSL_VERSION}echo "Done"