同步發表於http://avenwu.net/2015/07/27/vlc-android-compiling
安裝必備工具/解決環境問題
環境准備什么的如果沒配置過需要一步步配置，主要是sdk/ndk，以及一些編譯過程中需要用到的命令工具。
* Requirements
You MUST build on Linux (or OSX if you know what you are doing).
The following packages MUST must be installed:
* the GNU autotools: autoconf, libtool, automake and make (a.k.a. gmake)
* ...and their dependencies: m4 and gawk, mawk or nawk,
* the GNU C and C++ compilers a.k.a. gcc and g++,
* some GNU build utilities: pkg-config and patch,
* the following other build utilities: Apache Ant (or Ant), cmake, protobuf, ragel,
* the Subversion and Git version control systems
* unzip and either curl or wget for retreiving sources.
* Very recent versions of some of those tools may be required. At the time of writing, notably gettext 0.19.3 or later is required.
If any of the above is missing, expect the build to fail at some point.
If targeting an Android-x86 device, yasm must be installed too.
特別要注意gettext的版本問題，系統如果自帶了可能版本不一致，比如筆者的時0.18.3，這個時候可以進行升級，可利用port，如果原版本是用homebrew安裝的則也可以通過brew升級，但是port安裝的不能通過brew升級，這樣的操作會導致本地安裝一個新的gettext,並未覆蓋原有的版本
port upgrade outdated
獲取源碼/編譯
接着開始獲取源代碼，嘗試編譯；
獲取源代碼
git clone git://git.videolan.org/vlc-ports/android.git vlc-android
很遺憾第一次失敗了：
aven-mac-pro:vlc-android aven$ ./compile.sh
*** No ANDROID_ABI defined architecture: using ARMv7
Downloading gradle
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
Archive: gradle-2.2.1-all.zip
End-of-central-directory signature not found. Either this file is not
a zipfile, or it constitutes one disk of a multi-part archive. In the
latter case the central directory and zipfile comment will be found on
the last disk(s) of this archive.
note: gradle-2.2.1-all.zip may be a plain executable, not an archive
unzip: cannot find zipfile directory in one of gradle-2.2.1-all.zip or
gradle-2.2.1-all.zip.zip, and cannot find gradle-2.2.1-all.zip.ZIP, period.
錯誤處理
從異常信息來看應該是gradle-2.2.1-all.zip文件無效，導致文件校驗失敗。可以手工檢測下gradle文件的內容：
aven-mac-pro:vlc-android aven$ unzip -l gradle-2.2.1-all.zip
Archive: gradle-2.2.1-all.zip
End-of-central-directory signature not found. Either this file is not
a zipfile, or it constitutes one disk of a multi-part archive. In the
latter case the central directory and zipfile comment will be found on
the last disk(s) of this archive.
note: gradle-2.2.1-all.zip may be a plain executable, not an archive
unzip: cannot find zipfile directory in one of gradle-2.2.1-all.zip or
gradle-2.2.1-all.zip.zip, and cannot find gradle-2.2.1-all.zip.ZIP, period.
果然失敗，目測應該是網絡下載文件失敗，嘗試翻牆后重新下載，或從其他項目拷貝一份，gradle官網羅列了所有可供下載的版本:https://services.gradle.org/distributions
下載完畢后解壓為gradle/*，和AndroidStudio的格式保持一致，這個就是用來生成AndroidStudio配置使用的；
接下來腳本會自動嘗試下載vlc源碼，若有本地已有vlc源碼可以拷貝一份vlc，因為下載比較慢
再次編譯，遇到protobuf的缺失問題，port或brew安裝之；
protoc not found
To-be-built packages: protoc
rm -f -R protobuf && tar xvjf protobuf-2.6.0.tar.bz2
mv protobuf-2.6.0 protobuf && touch protobuf
mv: rename protobuf-2.6.0 to protobuf: No such file or directory
make: *** [protobuf] Error 1
buildsystem tools: make
安裝過程最好保持翻牆狀態，否則容易出現個別地址無法訪問，例如amazon的雲服務
(7) Failed to connect to s3.amazonaws.com port 443: Operation timed out
解決完錯誤，繼續編譯，看到這段輸出時基本也就大功告成：
make: Entering directory `/Users/aven/work/video/vlc-android/libvlc'
[armeabi-v7a] Gdbserver : [arm-linux-androideabi-4.8] libs/armeabi-v7a/gdbserver
[armeabi-v7a] Gdbsetup : libs/armeabi-v7a/gdb.setup
[armeabi-v7a] Install : libanw.10.so => libs/armeabi-v7a/libanw.10.so
[armeabi-v7a] Install : libanw.13.so => libs/armeabi-v7a/libanw.13.so
[armeabi-v7a] Install : libanw.14.so => libs/armeabi-v7a/libanw.14.so
[armeabi-v7a] Install : libanw.18.so => libs/armeabi-v7a/libanw.18.so
[armeabi-v7a] Install : libanw.21.so => libs/armeabi-v7a/libanw.21.so
[armeabi-v7a] Install : libiomx.10.so => libs/armeabi-v7a/libiomx.10.so
[armeabi-v7a] Install : libiomx.13.so => libs/armeabi-v7a/libiomx.13.so
[armeabi-v7a] Install : libiomx.14.so => libs/armeabi-v7a/libiomx.14.so
[armeabi-v7a] Compile thumb : vlcjni <= libvlcjni.c
[armeabi-v7a] SharedLibrary : libvlcjni.so
[armeabi-v7a] Install : libvlcjni.so => libs/armeabi-v7a/libvlcjni.so
make: Leaving directory `/Users/aven/work/video/vlc-android/libvlc'
//省略部分
:vlc-android:processVanillaARMv7DebugManifest UP-TO-DATE
:vlc-android:processVanillaARMv7DebugResources UP-TO-DATE
:vlc-android:generateVanillaARMv7DebugSources UP-TO-DATE
:vlc-android:processVanillaARMv7DebugJavaRes UP-TO-DATE
:vlc-android:compileVanillaARMv7DebugJava UP-TO-DATE
:vlc-android:compileVanillaARMv7DebugNdk UP-TO-DATE
:vlc-android:compileVanillaARMv7DebugSources UP-TO-DATE
:vlc-android:preDexVanillaARMv7Debug
:vlc-android:dexVanillaARMv7Debug
:vlc-android:validateDebugSigning
:vlc-android:packageVanillaARMv7Debug
:vlc-android:zipalignVanillaARMv7Debug
:vlc-android:assembleVanillaARMv7Debug
BUILD SUCCESSFUL
Total time: 23.73 secs
檢查並安裝demo：
aven-mac-pro:vlc-android aven$ ls -al vlc-android/build/outputs/apk/
total 53856
drwxr-xr-x 4 aven staff 136 Aug 1 12:34 .
drwxr-xr-x 4 aven staff 136 Aug 1 12:34 ..
-rw-r--r-- 1 aven staff 13785101 Aug 1 12:34 VLC-Android-1.5.0-ARMv7.apk
-rw-r--r-- 1 aven staff 13783961 Aug 1 12:34 vlc-android-vanilla-ARMv7-debug-unaligned.apk
aven-mac-pro:vlc-android aven$ adb install vlc-android/build/outputs/apk/VLC-Android-1.5.0-ARMv7.apk
5836 KB/s (13785101 bytes in 2.306s)
pkg: /data/local/tmp/VLC-Android-1.5.0-ARMv7.apk
Success
檢驗成果
運行demo，功能還是很強大的，基本上就是一個完善的播放器，還支持一些實用的功能，比如倍速播放；
