mac os 下編譯ffmpeg

首先我的工作環境爲:mac os 10.7.5 + xcode4.4.1 + gcc4.2.1 + ffmpeg

1. 到https://github.com/gabriel/ffmpeg-iphone-build下載ffmpeg-iphone-build
2.先將gas-preprocessor.pl拷貝到/usr/sbin/目錄中。
3.到ffmpeg官網上下載ffmpeg源碼

4. 配置爲:

============================================================

#!/bin/sh

#  config.sh

#  firstLib

#

#  Created by  on 12-5-16.

#  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.

# http://blog.csdn.net/jjmm2035/article/details/5302300

#Mac OS/X simulate iphone

#./configure \

#--prefix=/Developer/ffmpeg \

#--disable-debug \

#--cc=/Developer/usr/bin/i686-apple-darwin11-gcc-4.2 \

#--enable-gpl \

#--enable-static \

#--disable-shared \

#--enable-swscale \

#--disable-ffmpeg \

#--disable-ffplay \

#--disable-ffserver \

#--enable-pthreads

#iPhone

./configure \

--enable-cross-compile \

--target-os=darwin \

--arch=arm \

--cpu=cortex-a8 \

--extra-cflags='-arch armv7' \

--extra-ldflags='-arch armv7' \

--enable-pic \

--enable-neon \

--prefix='dist' \

--cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \

--cross-prefix=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/ \

--as='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/iPhoneOS5.1.sdk \

--extra-cflags="-mfpu=neon -mfloat-abi=softfp" \

--extra-ldflags="-mfpu=neon -mfloat-abi=softfp" \

--extra-ldflags=-L/users/xpg-2007/xpg-work/x264-snapshot-20120531-2245/dist/lib \

--extra-cflags=-I/users/xpg-2007/xpg-work/x264-snapshot-20120531-2245/dist/include \

--extra-ldflags=-L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk/usr/lib/system \

--disable-ffmpeg \

--enable-libx264 \

--enable-gpl \

--disable-ffplay \

--disable-ffserver \

--disable-avfilter \

--disable-doc \

--disable-asm \

--disable-filters \

--disable-network \

--disable-bsfs \

--disable-indevs \

--disable-postproc \

--disable-stripping \

--disable-debug 

===============================================================

執行成功,在執行

make

就會在對應的目錄中生成*.a文件

複製到自己的XCODE工程中並引入*.a,還有不要忘了加入libbz2.1.0.dylib這個庫文件

以上是生成armv7的lib,如果要生成armv6的則修改爲-arch armv6既可.