LAME(http://lame.sourceforge.net/) is a library written in c language. It can convert PCM sound files to MP3 files. I use it to convert sound files to MP3 files on iPhone. T
For Xcode 6.1, iOS SDK 8.1, I use below shell script:
Support armv7, arm64, i686 and x86_64
#!/bin/bash
DEVELOPER=`xcode-select -print-path`
SDK_VERSION="8.1"
LAMEDIR="/Users/zuyuanzhou/Downloads/lame-3.99.5"
mkdir build
function build_lame()
{
make distclean
./configure \
CFLAGS="-isysroot ${DEVELOPER}/Platforms/${SDK}.platform/Developer/SDKs/${SDK}${SDK_VERSION}.sdk" \
CC="${DEVELOPER}/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch ${PLATFORM} -miphoneos-version-min=7.0 " \
CPP="${DEVELOPER}/Toolchains/XcodeDefault.xctoolchain/usr/bin/cpp" \
--prefix="$LAMEDIR" \
--host="$HOST" \
--disable-shared \
--enable-static \
--disable-decoder \
--disable-frontend
make -j4
cp "libmp3lame/.libs/libmp3lame.a" "build/libmp3lame-${PLATFORM}.a"
}
PLATFORM="i686"
SDK="iPhoneSimulator"
HOST="i686-apple-darwin14.1.0"
build_lame
PLATFORM="x86_64"
build_lame
PLATFORM="armv7"
SDK="iPhoneOS"
HOST="arm-apple-darwin9"
build_lame
PLATFORM="arm64"
build_lame
lipo -create build/* -output build/libmp3lame.a