交叉编译-9：跨平台交叉编译libevhtp库（Android、iOS）_libevhtp编译

一、Android平台

     1. 进入网址https://repology.org/metapackage/libevhtp/versions，下载libevhtp压缩包。

     2. 解压进入libevhtp-1.2.16目录，在当前目录下创建文件夹openssl，将openssl的头文件以及库分别拷贝openssl /include到和openssl/lib目录下，并将openssl的头文件拷贝到include目录下。

     3. 在当前目录下创建文件夹libevent，将libevent的头文件以及库分别拷贝libevent/include到和libevent/lib目录下。

     4. 修改CMakeLists.txt，注释掉196行的list (APPEND LIBEVHTP_EXTERNAL_LIBS pthread)，因为Android平台的pthread库在c库里了，不需要额外链接。

     5.进入build目录，新建ShellScript脚本。    

#!/bin/bash
rm -rf CMakeCache.txt
rm -rf CMakeFiles
rm -rf cmake_install.cmake
rm -rf Makefile
rm -rf CTestTestfile.cmake
 
if [[ “$@“ =~ "-d" ]];then
        echo "----------------------------cmake debug----------------------------"
cmake -DDEBUG=ON -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK_HOME/build/cmake/android.toolchain.cmake \
      -DANDROID_NDK=$ANDROID_NDK_HOME \
      -DANDROID_ABI=armeabi-v7a \
      -DANDROID_TOOLCHAIN=clang \
      -DANDROID_PLATFORM=android-21 \
      -DANDROID_STL=c++_shared \
	  -DEVHTP_BUILD_SHARED=ON \
	  -DLIBEVENT_INCLUDE_DIR=../libevent/include \
	  -DLIBEVENT_LIBRARY=../libevent/lib/libevent.a \
	  -DLIBEVENT_CORE=../libevent/lib/libevent_core.a \
	  -DLIBEVENT_EXTRA=../libevent/lib/libevent_extra.a \
	  -DLIBEVENT_THREAD=../libevent/lib/libevent_pthreads.a \
	  -DLIBEVENT_SSL=../libevent/lib/libevent_openssl.a \
	  -DOPENSSL_INCLUDE_DIR=../openssl/include \
	  -DOPENSSL_CRYPTO_LIBRARY=../openssl/lib/libcrypto.a \
	  -DOPENSSL_SSL_LIBRARY=../openssl/lib/libssl.a \
	  ..   
else      
        echo "----------------------------cmake release----------------------------"
cmake -DDEBUG=NO -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK_HOME/build/cmake/android.toolchain.cmake \
      -DANDROID_NDK=$ANDROID_NDK_HOME \
      -DANDROID_ABI=armeabi-v7a \
      -DANDROID_TOOLCHAIN=clang \
      -DANDROID_PLATFORM=android-21 \
      -DANDROID_STL=c++_shared \
	  -DEVHTP_BUILD_SHARED=ON \
	  -DLIBEVENT_INCLUDE_DIR=../libevent/include \
	  -DLIBEVENT_LIBRARY=../libevent/lib/libevent.a \
	  -DLIBEVENT_CORE=../libevent/lib/libevent_core.a \
	  -DLIBEVENT_EXTRA=../libevent/lib/libevent_extra.a \
	  -DLIBEVENT_THREAD=../libevent/lib/libevent_pthreads.a \
	  -DLIBEVENT_SSL=../libevent/lib/libevent_openssl.a \
	  -DOPENSSL_INCLUDE_DIR=../openssl/include \
	  -DOPENSSL_CRYPTO_LIBRARY=../openssl/lib/libcrypto.a \
	  -DOPENSSL_SSL_LIBRARY=../openssl/lib/libssl.a \
      ..	  
fi
	  
make 
 
rm -rf CMakeCache.txt
rm -rf CMakeFiles
rm -rf cmake_install.cmake
rm -rf Makefile
rm -rf CTestTestfile.cmake

     5.使用chmod +x ShellScript给ShellScript脚本赋予执行权限。

     6. ./ShellScript

一、iOS平台

     1. 进入网址https://repology.org/metapackage/libevhtp/versions，下载libevhtp压缩包。

     2. 解压进入libevhtp-1.2.16目录，在当前目录下创建文件夹openssl，将openssl的头文件以及库分别拷贝openssl /include到和openssl/lib目录下，并将openssl的头文件拷贝到include目录下。

     3. 在当前目录下创建文件夹libevent，将libevent的头文件以及库分别拷贝libevent/include到和libevent/lib目录下。

     4. 修改CMakeLists.txt，增加两行。

SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fobjc-abi-version=2 -fobjc-arc -std=gnu++11 -stdlib=libc++ -isysroot ${CMAKE_OSX_SYSROOT}")
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fobjc-abi-version=2 -fobjc-arc -isysroot ${CMAKE_OSX_SYSROOT}")

     5.进入build目录，新建ShellScript脚本。     

#!/bin/bash
rm -rf CMakeCache.txt
rm -rf CMakeFiles
rm -rf cmake_install.cmake
rm -rf Makefile
rm -rf CTestTestfile.cmake
 
if [ “$@“ =~ "-d" ];then
        echo "----------------------------cmake debug----------------------------"
        cmake -DDEBUG=ON -DCMAKE_TOOLCHAIN_FILE=./toolchain/iOS.cmake -DIOS_PLATFORM=OS -DBUILD_ARM64=1 \
        -DEVHTP_BUILD_SHARED=OFF \
        -DCMAKE_SIZEOF_VOID_P=8 \
        -DLIBEVENT_INCLUDE_DIR=../libevent/include \
        -DLIBEVENT_LIBRARY=../libevent/lib/libevent.a \
        -DLIBEVENT_CORE=../libevent/lib/libevent_core.a \
        -DLIBEVENT_EXTRA=../libevent/lib/libevent_extra.a \
        -DLIBEVENT_THREAD=../libevent/lib/libevent_pthreads.a \
        -DLIBEVENT_SSL=../libevent/lib/libevent_openssl.a \
        -DOPENSSL_INCLUDE_DIR=../openssl/include \
        -DOPENSSL_CRYPTO_LIBRARY=../openssl/lib/libcrypto.a \
        -DOPENSSL_SSL_LIBRARY=../openssl/lib/libssl.a \
        ..      
else      
        echo "----------------------------cmake release----------------------------"
        cmake -DDEBUG=NO -DCMAKE_TOOLCHAIN_FILE=./toolchain/iOS.cmake -DIOS_PLATFORM=OS -DBUILD_ARM64=1 \
        -DEVHTP_BUILD_SHARED=OFF \
        -DCMAKE_SIZEOF_VOID_P=8 \
        -DLIBEVENT_INCLUDE_DIR=../libevent/include \
        -DLIBEVENT_LIBRARY=../libevent/lib/libevent.a \
        -DLIBEVENT_CORE=../libevent/lib/libevent_core.a \
        -DLIBEVENT_EXTRA=../libevent/lib/libevent_extra.a \
        -DLIBEVENT_THREAD=../libevent/lib/libevent_pthreads.a \
        -DLIBEVENT_SSL=../libevent/lib/libevent_openssl.a \
        -DOPENSSL_INCLUDE_DIR=../openssl/include \
        -DOPENSSL_CRYPTO_LIBRARY=../openssl/lib/libcrypto.a \
        -DOPENSSL_SSL_LIBRARY=../openssl/lib/libssl.a \
        ..       
fi
 
make 
 
rm -rf CMakeCache.txt
rm -rf CMakeFiles
rm -rf cmake_install.cmake
rm -rf Makefile
rm -rf CTestTestfile.cmake

6.下载iOS cmake交叉编译链，下载链接：https://download.csdn.net/download/zhuyunier/10273702。解压压缩包到build目录下，进入build目录，执行ShellScript脚本。