Build Opus Codec for iOS

项目中需要使用Opus Codec for iOS， 在github 上找了一个不错的脚本，  对其稍作修改， 编译非常顺利。 如下为脚本代码。 

#!/bin/bash

VERSION="1.1.2" #Opus Version
SDKVERSION="9.2"
MINIOSVERSION="7.0"

# by default, we won't build for debugging purposes
if [ "${DEBUG}" == "true" ]; then
echo "Compiling for debugging ..."
OPT_CFLAGS="-O0 -fno-inline -g"
OPT_LDFLAGS=""
OPT_CONFIG_ARGS="--enable-assertions --disable-asm"
else
OPT_CFLAGS="-Ofast -flto -g"
OPT_LDFLAGS="-flto"
OPT_CONFIG_ARGS=""
fi

ARCHS="i386 x86_64 armv7 armv7s arm64"
DEVELOPER=`xcode-select -print-path`
cd "`dirname \"$0\"`"
REPOROOT=$(pwd)

OUTPUTDIR="${REPOROOT}/out"
mkdir -p ${OUTPUTDIR}/include
mkdir -p ${OUTPUTDIR}/lib
BUILDDIR="${REPOROOT}/build"

echo $REPOROOT
echo $OUTPUTDIR
echo $BUILDDIR

SRCDIR=$REPOROOT
INTERDIR="${BUILDDIR}/built"
mkdir -p $INTERDIR

set +e
CCACHE=`which ccache`
if [ $? == "0" ]; then
echo "Building with ccache: $CCACHE"
CCACHE="${CCACHE} "
else
echo "Building without ccache"
CCACHE=""
fi

set -e
export ORIGINALPATH=$PATH
for ARCH in ${ARCHS}
do
if [ "${ARCH}" == "i386" ] || [ "${ARCH}" == "x86_64" ]; then
PLATFORM="iPhoneSimulator"
EXTRA_CFLAGS="-arch ${ARCH}"
EXTRA_CONFIG=""
else
PLATFORM="iPhoneOS"
EXTRA_CFLAGS="-arch ${ARCH}"
EXTRA_CONFIG="--host=arm-apple-darwin"
fi
mkdir -p "${INTERDIR}/${PLATFORM}${SDKVERSION}-${ARCH}.sdk"
./configure --enable-float-approx --disable-shared --enable-static --with-pic --disable-extra-programs --disable-doc ${EXTRA_CONFIG} \
--prefix="${INTERDIR}/${PLATFORM}${SDKVERSION}-${ARCH}.sdk" \
LDFLAGS="$LDFLAGS ${OPT_LDFLAGS} -fPIE -miphoneos-version-min=${MINIOSVERSION} -L${OUTPUTDIR}/lib" \
CFLAGS="$CFLAGS ${EXTRA_CFLAGS} ${OPT_CFLAGS} -fPIE -miphoneos-version-min=${MINIOSVERSION} -I${OUTPUTDIR}/include -isysroot ${DEVELOPER}/Platforms/${PLATFORM}.platform/Developer/SDKs/${PLATFORM}${SDKVERSION}.sdk" \
# Build the application and install it to the fake SDK intermediary dir
# we have set up. Make sure to clean up afterward because we will re-use
# this source tree to cross-compile other targets.
make -j4
make install
make clean
done

########################################
echo "Build library..."
# These are the libs that comprise libopus.
OUTPUT_LIBS="libopus.a"
for OUTPUT_LIB in ${OUTPUT_LIBS}; do
INPUT_LIBS=""
for ARCH in ${ARCHS}; do
if [ "${ARCH}" == "i386" ] || [ "${ARCH}" == "x86_64" ];
then
PLATFORM="iPhoneSimulator"
else
PLATFORM="iPhoneOS"
fi
INPUT_ARCH_LIB="${INTERDIR}/${PLATFORM}${SDKVERSION}-${ARCH}.sdk/lib/${OUTPUT_LIB}"
if [ -e $INPUT_ARCH_LIB ]; then
INPUT_LIBS="${INPUT_LIBS} ${INPUT_ARCH_LIB}"
fi
done
# Combine the three architectures into a universal library.
if [ -n "$INPUT_LIBS" ]; then
lipo -create $INPUT_LIBS \
-output "${OUTPUTDIR}/lib/${OUTPUT_LIB}"
else
echo "$OUTPUT_LIB does not exist, skipping (are the dependencies installed?)"
fi
done
for ARCH in ${ARCHS}; do
if [ "${ARCH}" == "i386" ] || [ "${ARCH}" == "x86_64" ];
then
PLATFORM="iPhoneSimulator"
else
PLATFORM="iPhoneOS"
fi
cp -R ${INTERDIR}/${PLATFORM}${SDKVERSION}-${ARCH}.sdk/include/* ${OUTPUTDIR}/include/
if [ $? == "0" ]; then
# We only need to copy the headers over once. (So break out of forloop
# once we get first success.)
break
fi
done
####################
echo "Building done."
echo "Cleaning up..."
rm -fr ${INTERDIR}

echo "Done."



Reference：  

     很棒的Opus iOS编译脚本，上面的代码大多从次复制。    https://github.com/chrisballinger/Opus-iOS