iOS OC音频转码MP3-LAME的编译_oc录音实现mp3

环境:Mac OS 10.13.4    Xcode 9.3 

1.下载最新LAME https://sourceforge.net/projects/lame/files/lame/,然后将下载好的文件夹改名为lame.然后在桌面新创建一个名字叫LAME文件夹将lame整个放到新建的文件夹里.

2.使用github上的一个shell脚本来进行编译出iOS版本库地址:https://github.com/kewlbear/lame-ios-build

3.将下载的build-lame.sh脚本放到LAME文件夹下和lame文件夹同级.

4.打开终端:

 (1)     cd ~/LAME 文件夹

 (2)     ./build-lame.sh

 (3)     如果你看到EACCES: permission denied这样的权限报错 执行 sudo chmod 777 ./build-lame.sh 再 执行 ./build-lame.sh

(4)  xcode-select: error: tool 'xcodebuild' requires Xcode, but active developer directory '/Library/Developer/CommandLineTools' is a command line tools instance 这个是因为xcode路径被改变.

解决:

到finder里的应用程序找到Xcode然后使用右键打开:Xcode->显示包内容->Contents->Developer 然后把Developer文件夹拖到终端查看当前路径然后执行:

sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer

再执行: ./build-lame.sh就行了

这样就看到了fat-lame文件夹下的.a和.h文件就是我们需要的了

(5)  找到存放libmp3lame.a的文件夹,执行 file libmp3lame.a

看到下面的信息就代表成功了:

libmp3lame.a: Mach-O universal binary with 5 architectures: [i386:current ar archive random library] [arm64]

libmp3lame.a (for architecture i386): current ar archive random library

libmp3lame.a (for architecture armv7): current ar archive random library

libmp3lame.a (for architecture armv7s): current ar archive random library

libmp3lame.a (for architecture x86_64): current ar archive random library

libmp3lame.a (for architecture arm64): current ar archive random library

自定义编译脚本:

用法:

1.cd 到lame文件夹

2.脚本放置于lame文件夹同级

3.执行../ceshi.sh就能得到支持armv7设备的库了

./configure \
--disable-shared \
--disable-frontend \
--host="arm-apple-darwin" \
--prefix="/Users/apple/Desktop/shells/lib/armv7" \
CC="xcrun -sdk iphoneos clang -arch armv7" \
CFLAGS="-arch armv7 -fembed-bitcode -miphoneos-version-min=7.0" \
LDFLAGS="-arch armv7 -fembed-bitcode -miphoneos-version-min=7.0" 
make clean
make -j8 
make install