ubuntu16 编译 Android 版的 libjpeg-turbo

 

参考：  https://www.jianshu.com/p/20902ca448ae

编译环境 ubuntu16

ndk-bundle版本：19.2

 

下载源码

下载并解压源码https://github.com/libjpeg-turbo/libjpeg-turbo

https://sourceforge.net/projects/libjpeg-turbo/files/

编译脚本

根据自己目录修改 NDK  、 CMake 、libjpeg-turbo 源码的路径

# libjpeg-turbo 源码路径
MY_SOURCE_DIR=$(pwd)/libjpeg-turbo-2.0.2
# Android studio 的 Cmake 路径
CMAKE_PATH=/home/fengchya/android_env/Sdk/cmake/3.6.4111459
# NDK 路径
NDK_PATH=/home/fengchya/android_env/Sdk/ndk-bundle

 build_android.sh

#!/bin/bash

# lib-name
MY_LIBS_NAME=libjpeg-turbo
# libjpeg-turbo 源码路径
MY_SOURCE_DIR=$(pwd)/libjpeg-turbo-2.0.2
MY_BUILD_DIR=obj_android

# Android studio 的 Cmake 路径
CMAKE_PATH=/home/fengchya/android_env/Sdk/cmake/3.6.4111459
export PATH=${CMAKE_PATH}/bin:$PATH
# NDK 路径
NDK_PATH=/home/fengchya/android_env/Sdk/ndk-bundle
BUILD_PLATFORM=linux-x86_64
TOOLCHAIN_VERSION=4.9
ANDROID_VERSION=24

ANDROID_ARMV5_CFLAGS="-march=armv5te"
ANDROID_ARMV7_CFLAGS="-march=armv7-a -mfloat-abi=softfp -mfpu=neon"  # -mfpu=vfpv3-d16  -fexceptions -frtti
ANDROID_ARMV8_CFLAGS="-march=armv8-a "                   # -mfloat-abi=softfp -mfpu=neon -fexceptions -frtti
ANDROID_X86_CFLAGS="-march=i386 -mtune=intel -mssse3 -mfpmath=sse -m32"
ANDROID_X86_64_CFLAGS="-march=x86-64 -msse4.2 -mpopcnt -m64 -mtune=intel"

# params($1:arch,$2:arch_abi,$3:host,$4:compiler,$5:cflags,$6:processor)
build_bin() {

    echo "-------------------start build $1-------------------------"

    ANDROID_ARCH_ABI=$1    # armeabi armeabi-v7a x86 mips
    CFALGS="$2"

    PREFIX=$(pwd)/target_android/${MY_LIBS_NAME}/${ANDROID_ARCH_ABI}/
    # build 中间件
    BUILD_DIR=./${MY_BUILD_DIR}/${MY_LIBS_NAME}/${ANDROID_ARCH_ABI}

    echo "path==>$PATH"
    echo "build_dir==>$BUILD_DIR"
    echo "ANDROID_ARCH_ABI==>$ANDROID_ARCH_ABI"
    echo "CFALGS==>$CFALGS"


    mkdir -p ${BUILD_DIR}
    cd ${BUILD_DIR}


    cmake -G"Unix Makefiles" \
      -DANDROID_ABI=${ANDROID_ARCH_ABI} \
      -DANDROID_PLATFORM=android-${ANDROID_VERSION} \
      -DCMAKE_BUILD_TYPE=Release \
      -DANDROID_NDK=${NDK_PATH} \
      -DCMAKE_TOOLCHAIN_FILE=${NDK_PATH}/build/cmake/android.toolchain.cmake \
      -DCMAKE_POSITION_INDEPENDENT_CODE=1 \
      -DCMAKE_INSTALL_PREFIX=${PREFIX} \
      -DANDROID_ARM_NEON=TRUE \
      -DANDROID_TOOLCHAIN=clang \
      -DANDROID_STL=c++_static \
      -DCMAKE_C_FLAGS="${CFALGS} -Os -Wall -pipe -fPIC" \
      -DCMAKE_CXX_FLAGS="${CFALGS} -Os -Wall -pipe -fPIC" \
      -DANDROID_CPP_FEATURES=rtti exceptions \
      -DWITH_JPEG8=1 \
      ${MY_SOURCE_DIR}

    make clean
    make
    make install

    cd ../../../

    echo "-------------------$1 build end-------------------------"
}

# build armeabi
build_bin armeabi "$ANDROID_ARMV5_CFLAGS"

#build armeabi-v7a
build_bin armeabi-v7a "$ANDROID_ARMV7_CFLAGS"

#build arm64-v8a
build_bin arm64-v8a "$ANDROID_ARMV8_CFLAGS"

#build x86
build_bin x86 "$ANDROID_X86_CFLAGS"

#build x86_64
build_bin x86_64 "$ANDROID_X86_64_CFLAGS"

 

目录结构

在该目录执行  ./build_android.sh   编译 libjpeg-turbo

编译完成：

        target_android/libjpeg-turbo/arm64-v8a/lib/