Ubuntu系统编译ijkplayer

系统：Ubuntu 16.04 64位 一定要安装64位系统，否则之后编译会出各种问题。

1. 下载NDK r10e

1 2	wget -q https://dl.google.com/android/repository/android-ndk-r10e-linux-x86_64.zip && \ unzip android-ndk-r10e-linux-x86_64.zip && \

2. 设置环境变量

1	export ANDROID_NDK=/path/to/android-ndk

也可以将其添加到~/.bashrc，然后执行source ~/.bashrc使其长久生效

3. 使用bash而不是dash

1 2	# choose [No] to use bash sudo dpkg-reconfigure dash

4. 下载源码并编译

如果下载慢，就挂代理。推荐 Vultr

# Build Android
git clone https://github.com/Bilibili/ijkplayer.git ijkplayer-android
cd ijkplayer-android
git checkout -B latest k0.8.8

./init-android.sh

cd android/contrib
./compile-ffmpeg.sh clean
./compile-ffmpeg.sh all

cd ..
./compile-ijk.sh all

# Android Studio:
#     Open an existing Android Studio project
#     Select android/ijkplayer/ and import
#
#     define ext block in your root build.gradle
#     ext {
#       compileSdkVersion = 23       // depending on your sdk version
#       buildToolsVersion = "23.0.0" // depending on your build tools version
#
#       targetSdkVersion = 23        // depending on your sdk version
#     }
#
# If you want to enable debugging ijkplayer(native modules) on Android Studio 2.2+: (experimental)
#     sh android/patch-debugging-with-lldb.sh armv7a
#     Install Android Studio 2.2(+)
#     Preference -> Android SDK -> SDK Tools
#     Select (LLDB, NDK, Android SDK Build-tools,Cmake) and install
#     Open an existing Android Studio project
#     Select android/ijkplayer
#     Sync Project with Gradle Files
#     Run -> Edit Configurations -> Debugger -> Symbol Directories
#     Add "ijkplayer-armv7a/.externalNativeBuild/ndkBuild/release/obj/local/armeabi-v7a" to Symbol Directories
#     Run -> Debug 'ijkplayer-example'
#     if you want to reverse patches:
#     sh patch-debugging-with-lldb.sh reverse armv7a
#
# Eclipse: (obselete)
#     File -> New -> Project -> Android Project from Existing Code
#     Select android/ and import all project
#     Import appcompat-v7
#     Import preference-v7
#
# Gradle
#     cd ijkplayer
#     gradle

编译成功后会在/ijkplayer-android/android/ijkplayer/下面，ijkplayer-armv7a、ijkplayer-arm64等module中的/src/main/libs文件夹生成适配不同CPU的so库。

问题1

--------------------
[*] make NDK standalone toolchain
--------------------
build on Linux i686
ANDROID_NDK=/usr/vlc/android-ndk
NDKr10e-rc4(64-bit) detected
Host system 'linux-x86' is not supported by the source NDK!
Try --system=<name> with one of:  linux-x86_64

解决方法：

在/ijkplayer-android/android/contrib/tools/do-compile-ffmpeg.sh文件中找到以下内容

$ANDROID_NDK/build/tools/make-standalone-toolchain.sh \
        $FF_MAKE_TOOLCHAIN_FLAGS \
        --platform=$FF_ANDROID_PLATFORM \
        --toolchain=$FF_TOOLCHAIN_NAME

然后增加--system=linux-x86_64变为

$ANDROID_NDK/build/tools/make-standalone-toolchain.sh \
        $FF_MAKE_TOOLCHAIN_FLAGS \
        --platform=$FF_ANDROID_PLATFORM \
        --toolchain=$FF_TOOLCHAIN_NAME \
        --system=linux-x86_64

问题2

1 2	arm-linux-androideabi-gcc is unable to create an executable file. C compiler test failed.

解决方法：

安装64位Ubuntu系统。

ijkplayer on github