构建iOS6.0 ARMv7处理器的FFMPEG库 [英] Building FFMPEG library for iOS6.0 ARMv7 Processor
问题描述
警告：
我刚刚被其他用户通知，有一些法律问题围绕着使用FFMPEG的iOS，留下链接这里是 http：// multinc .com / 2009/08/24 / compatible-between-the-iphone-app-store-and-the-lgpl /
I was just informed by another user that there are some legal issues revolving around using FFMPEG for iOS, leaving the link here http://multinc.com/2009/08/24/compatibility-between-the-iphone-app-store-and-the-lgpl/
我清理了有一点问题，当我第一次写信的时候我很慌张。现在我可以在休息一会儿后更清楚。
I cleaned up my question a little bit, when I wrote it the first time I was flustered. Now I can be more clear after taking a small break.
编辑：了解到必须为ARMv7，ARMv7s和iOS6.0
learned that you have to build for ARMv7, ARMv7s and iOS6.0
我试图在XCode 4.5.1项目中使用FFMPEG库。我正在为ARMv7构建它。我正在寻找的是确切的过程和一些解释。我明白这不是一个很好的记录问题。但是我知道其他pople与我一样的问题。
I'm trying to use the FFMPEG library in an XCode 4.5.1 project. And I'm trying to build it for ARMv7. What I'm looking for is the exact process, and some explanation. I understand that this is not a well documented problem. But I know that other pople have had the same problem as me.
我能够做的。
我已经能够构建库进行测试。
I have been able to build the library for testing.
1）我已经能够克隆ffmpeg。对于初学者，这将通过使用ffmpeg源创建一个目录来开始。 （对于写这篇文章的人来说，这样做）
1) I have been able to clone ffmpeg. For beginners this will get you started by creating a directory with the ffmpeg source. (Kudos to the guys who wrote it)
git clone git：//source.ffmpeg.org/ffmpeg.git ffmpeg
git clone git://source.ffmpeg.org/ffmpeg.git ffmpeg
2）我已经能够编写一个没有任何错误的配置文件。我们稍后再回到这一部分。这是我附加的命令./configure
2) I have been able to write a config file that doesn't have any errors. We will go back to this part later. This is the command I attach to ./configure
./ configure
--disable-doc
- disable-ffmpeg
--disable-ffplay
--disable-ffserver
--enable-cross-compile
--arch = arm
--target-os = darwin
--cc = / Applications / Xcode.app / Contents / Developer / Platforms / iPhoneOS.platform / Developer / usr / llvm-gcc-4.2 / bin / arm-apple-darwin10-llvm-gcc-4.2
./configure --disable-doc --disable-ffmpeg --disable-ffplay --disable-ffserver --enable-cross-compile --arch=arm --target-os=darwin --cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/bin/arm-apple-darwin10-llvm-gcc-4.2
- as ='gas-preprocessor / gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/ llvm-gcc-4.2 / bin / arm-apple-darwin10-llvm-gcc-4.2'
--as='gas-preprocessor/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/bin/arm-apple-darwin10-llvm-gcc-4.2'
- sysroot = / applications / xcode.app / contents /平台/ iPhoneOS.platform / Developer / SDKs / iPhoneOS6.0.sdk
--sysroot=/applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk
- cpu = cortex-a8
--extra-ldflags =' - arch = armv7 -isysroot /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk'
--enable-pic --disable-bzlib --disable-gpl --D isable-shared --enable-static --disable-mmx --disable-debug --disable-neon --extra-cflags =' - pipe -Os -gdwarf-2 -isysroot /applications/xcode.app/contents/Developer /Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk
-m $ {thumb_opt：-no-thumb} -mthumb-interwork'
--cpu=cortex-a8 --extra-ldflags='-arch=armv7 -isysroot /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk' --enable-pic --disable-bzlib --disable-gpl --disable-shared --enable-static --disable-mmx --disable-debug --disable-neon --extra-cflags='-pipe -Os -gdwarf-2 -isysroot /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk -m${thumb_opt:-no-thumb} -mthumb-interwork'
这些是需要注意的事情。
These are some things to note.
- 我不得不下载（ https://github.com/yuvi/gas-preprocessor ）将文件gas-preprocessor.pl复制到/ usr / local /完事。设置读取写入权限（777）
- 确保使用正确的GCC编译器：/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr /llvm-gcc-4.2/bin/arm-apple-darwin10-llvm-gcc-4.2
- 确保使用正确的SDK：/applications/xcode.app/contents/开发者/平台/ iPhoneOS.platform / Developer / SDKs / iPhoneOS6.0.sdk
- - extra-cflags = - arch armv7原因：错误：无法识别的命令行选项-arch
- I had to download ( https://github.com/yuvi/gas-preprocessor ) copy the file gas-preprocessor.pl at /usr/local/bin. Set permissions to read write (777)
- Make sure I'm using the right GCC compiler: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/bin/arm-apple-darwin10-llvm-gcc-4.2
- Make sure I'm using the right SDK: /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk
- --extra-cflags="-arch armv7" causes: error: unrecognized command line option "-arch"
这里是问题。
我可以包括这样的图书馆
I can include the library like so
libavcodec / avcodec.h
libavcodec/avcodec.h
但是当我开始编写编码器时。我收到这个警告和无数错误。
But when I started to write the encoder. I received this warning, and countless errors.
忽略文件/Users/Jimmy/Development/source.ffmpeg/Library/libavutil.a，文件是为存档而构建的，而不是架构被链接（armv7s）：/Users/Jimmy/Development/source.ffmpeg/Library/libavutil.a
ignoring file /Users/Jimmy/Development/source.ffmpeg/Library/libavutil.a, file was built for archive which is not the architecture being linked (armv7s): /Users/Jimmy/Development/source.ffmpeg/Library/libavutil.a
这意味着我没有建立正确的二进制文件。
That means that I didn't build the right binary.
我正在寻找的是以前做过的人，我们所有人通过为iOS6.0和ARMv7构建FFMPEG和大多数事情来寻找。感谢一下。
推荐答案
这是我的工作配置在iOS 6上交叉编译 FFmpeg arch是 ARMv7
Here is my working Configure for cross-compiling FFmpeg on iOS 6 the arch is ARMv7
注意：您必须具有气体预处理器。在 / usr / local / bin / 中，请不要继续，直到你有 gas-preprocessor.pl
NOTE: You must have to have gas-preprocessor.pl inside /usr/local/bin/ please do not continue until you have gas-preprocessor.pl on your bin directory
-
从此处下载FFmpeg 1.0Angel
Download FFmpeg 1.0 "Angel" from here
解压缩并将其放在某个地方，即您的桌面文件夹
Unzip it and place it somewhere i.e. your Desktop folder
打开终端并浏览到解压缩的FFmpeg文件夹
复制并粘贴以下命令，（请耐心等待一段时间）
Copy and paste the following command, (be patient will take a while)
./configure --disable-doc --disable-ffmpeg - -disable-ffplay --disable-ffserver --enable-cross-compile --arch = arm --target-os = darwin --cc = / Applications / Xcode.app / Contents / Developer / Platforms / iPhoneOS.platform / Developer / usr / bin / gcc --as ='gas-preprocessor / gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc'--sysroot =应用程序/ Xcode.app /内容/开发/平台/ iPhoneOS.platform /开发人员/SDKs/iPhoneOS6.0.sdk --cpu = cortex-a8 --extra-cflags =' - arch armv7'--extra-ldflags =' - arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms /iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk'--enable-pic --enable-decoder = rawvideo --disable-asm
./configure --disable-doc --disable-ffmpeg --disable-ffplay --disable-ffserver --enable-cross-compile --arch=arm --target-os=darwin --cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc --as='gas-preprocessor/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk --cpu=cortex-a8 --extra-cflags='-arch armv7' --extra-ldflags='-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk' --enable-pic --enable-decoder=rawvideo --disable-asm
-
现在在终端
上输入以下命令make（稍等一点）一旦完成，在终端上输入
sudo make install（再次等待）Once it has finished now type on terminal
sudo make install(wait again)转到
/ usr / local / lib找到新鲜出炉的armv7libsGo to
/usr/local/libto find your freshly bakedarmv7libs享受！
Alex
这个armv7s配置是完全未经测试的，我真的不知道这是否会工作，我没有iPhone 5，所以我们需要一个人来测试最终的armv7s库
./ configure --disable-doc --disable-ffmpeg --disable-ffplay
--disable-ffserver --enable-cross-compile --arch = arm --target- os = darwin --cc = / Applications / Xcode.app / Contents / Developer / Platforms / iPhoneOS.platform / Developer / usr / bin / gcc
--as ='gas-preprocessor / gas-preprocessor.pl /应用程序/ Xcode.app / Contents / Developer / Platforms / iPhoneOS.platform / Developer / usr / bin / gcc'
--sysroot = / Applications / Xcode.app / Contents / Developer / Platforms / iPhoneOS.platform / Developer /SDKs/iPhoneOS6.0.sdk
--cpu = cortex-a8 --extra-cflags =' - arch armv7s'--extra-ldflags =' - arch armv7s -isysroot
/ Applications / Xcode .app / Contents / Developer / Platforms / iPhoneOS.platform / Developer / SDKs / iPhoneOS6.0.sdk'
--enable-pic --enable-decoder = rawvideo --disable-asm./configure --disable-doc --disable-ffmpeg --disable-ffplay --disable-ffserver --enable-cross-compile --arch=arm --target-os=darwin --cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc --as='gas-preprocessor/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk --cpu=cortex-a8 --extra-cflags='-arch armv7s' --extra-ldflags='-arch armv7s -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk' --enable-pic --enable-decoder=rawvideo --disable-asm
这篇关于构建iOS6.0 ARMv7处理器的FFMPEG库的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
