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唯品会一个专做特卖的网站广告,潍坊今日头条新闻最新,google 网站突然一条收录也没有,wordpress 显示分类手机版本更加方便生成安卓库参考了这个代码在编译Mosquitto以支持安卓平台时，主要涉及到使用Android NDK（Native Development Kit）进行交叉编译。环境的准备参考之前的博客【QT开发（17）】2023-QT 5.14.2实现Andr…

手机版本更加方便

生成安卓库

参考了这个代码

在编译Mosquitto以支持安卓平台时，主要涉及到使用Android NDK（Native Development Kit）进行交叉编译。环境的准备参考之前的博客【QT开发（17）】2023-QT 5.14.2实现Android开发

在这里插入图片描述
下载Mosquitto， https://github.com/eclipse/mosquitto.git

2. 编写或准备编译脚本

对于Mosquitto的编译，可能需要编写一个CMake或Makefile脚本来配置编译选项，以支持Android平台。这通常包括指定Android的目标架构（如armeabi-v7a、arm64-v8a等）、API级别、工具链等。

例如，可以创建一个名为mosquitto_android_cmake.sh的脚本，内容大致如下（注意：以下脚本仅为示例，具体参数需根据实际情况调整）：

#!/bin/bash
CURRENT_DIR=$(dirname $(readlink -f $0))
rm -rf ./build
mkdir -p build
ANDROID_ABI="armeabi-v7a"
ANDROID_NDK="/var/files/yanyixiong/android-ndk-r21e"
cmake \-DANDROID_NDK=${ANDROID_NDK} \-DANDROID_ABI=${ANDROID_ABI} \-DANDROID_NATIVE_API_LEVEL=21 \-DANDROID_TOOLCHAIN_NAME="arm-linux-androideabi-4.9" \-DCMAKE_TOOLCHAIN_FILE="${ANDROID_NDK}/build/cmake/android.toolchain.cmake" \-DWITH_TLS=OFF \-DWITH_THREADING=OFF \-H. -B./build
cd build
cmake --build .
cd ..

cmake -DANDROID_NDK=/var/files/yanyixiong/android-ndk-r21e \ -DANDROID_ABI="armeabi-v7a" \-DCMAKE_TOOLCHAIN_FILE="/var/files/yanyixiong/android-ndk-r21e/build/cmake/android.toolchain.cmake"  \-DWITH_TLS=OFF \-DWITH_THREADING=OFF \-DCMAKE_C_FLAGS='-fPIC' \..

问题来了

目前来说，不支持ndk21版本

ndk 10版本

git clone https://github.com/eclipse/mosquitto.git
cd mosquitto
mkdir _build_android
cd _build_android
cmake -DANDROID_NDK=/opt/android-ndk/android-ndk-r10e -DANDROID_ABI="armeabi-v7a" -DANDROID_NDK_HOST_X64="YES"  -DANDROID_TOOLCHAIN_NAME="arm-linux-androideabi-4.9" -DCMAKE_TOOLCHAIN_FILE="/opt/android-ndk/build/cmake/android.toolchain.cmake" -DWITH_TLS=OFF -DWITH_THREADING=OFF -DCMAKE_C_FLAGS='-fPIC' ..

ndk-r8e

参考

#!/bin/bash
# Script used to cmake and then make mosquitto for android on MacOSX with android-ndk-r8e and a patched mosquitto source.
# Update paths below and run it from inside the root mosquitto dir (right in the one you clone from hg)# Used patched mosquitto from: https://bitbucket.org/andreasjk/mosquitto
# Used NDK: http://dl.google.com/android/ndk/android-ndk-r8e-darwin-x86_64.tar.bz2
# Used cmake toolchain file from https://github.com/Itseez/opencv/blob/master/android/android.toolchain.cmake# Threading has to be disabled since android doesn't support it fully
# Also disabled TLS since I couldn't get cmake to find the openssl lib properly
CURRENT_DIR=$(dirname $(readlink -f $0))
ANDROID_ABI="armeabi-v7a"
rm -rf mosquitto/build
mkdir -p mosquitto/build
cd mosquitto/build
cmake \-DANDROID_NDK=${ANDROID_NDK} \-DANDROID_ABI=${ANDROID_ABI} \-DANDROID_NDK_HOST_X64="YES" \-DANDROID_NATIVE_API_LEVEL=19 \-DANDROID_TOOLCHAIN_NAME="arm-linux-androideabi-4.9" \-DCMAKE_TOOLCHAIN_FILE="${CURRENT_DIR}/android-cmake/android.toolchain.cmake" \-DOPENSSL_LIBRARIES="${CURRENT_DIR}/openssl/arch-${ANDROID_ABI}/lib" \-DOPENSSL_INCLUDE_DIR="${CURRENT_DIR}/openssl/sources/include" \-DWITH_TLS=ON \-DWITH_THREADING=OFF ..
echo "Start building android ..."
make
echo "Output file `pwd`"
cd ..

r16b

If you want to use mosquitto on Android platforms, then you should use Android NDK to cross-compile the source for Android platforms.

Before start compiling, you should download Android NDK from Google official website. In addition, you should make sure that the version of cmake on your device is above 3.6.0. We suggest you use linux to do the following things.

Firstly, edit {SOURCE_DIR}/CMakeLists.txt and add following commands:

add_compile_options(-fPIE)
add_compile_options(-fPIC)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pie")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pie")

after

add_definitions (-DCMAKE -DVERSION=\"${VERSION}\")

Secondly, enter the source folder({SOURCE_DIR}), and setup the build configure using the command below:

cmake -DANDROID_NDK=/home/sususweet/android_things/android-ndk-r16b -DANDROID_ABI="armeabi-v7a" -DANDROID_NDK_HOST_X64="YES"  -DANDROID_TOOLCHAIN_NAME="arm-linux-androideabi-4.9" -DCMAKE_TOOLCHAIN_FILE="/home/sususweet/android_things/android-ndk-r16b/build/cmake/android.toolchain.cmake" -DWITH_TLS=OFF -DWITH_THREADING=OFF -H. -B./build

Then go into build folder: