# iOS测试分为模拟器测试和真机测试，处理器分为32位处理器，和64位处理器，
# 模拟器32位处理器测试需要i386架构，（iphone5,iphone5s以下的模拟器）
# 模拟器64位处理器测试需要x86_64架构，(iphone6以上的模拟器)
# 真机32位处理器需要armv7,或者armv7s架构，（iphone4真机/armv7,      ipnone5,iphone5s真机/armv7s）
# 真机64位处理器需要arm64架构。(iphone6,iphone6p以上的真机
# xcodebuild -showsdks //查看sdk版本
#
###########################################################################
#  Choose your libopus version and your currently-installed iOS SDK version:
#
VERSION="1.3.1"
SDKVERSION="15.0"
MINIOSVERSION="8.0"

###########################################################################
#
# Don't change anything under this line!
#
###########################################################################

# 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


# No need to change this since xcode build will only compile in the
# necessary bits from the libraries we create
ARCHS="x86_64 arm64"

DEVELOPER=`xcode-select -print-path`
#DEVELOPER="/Applications/Xcode.app/Contents/Developer"

cd "`dirname \"$0\"`"
REPOROOT=$(pwd)

# Where we'll end up storing things in the end
OUTPUTDIR="${REPOROOT}/dependencies"
mkdir -p ${OUTPUTDIR}/include
mkdir -p ${OUTPUTDIR}/lib


BUILDDIR="${REPOROOT}/build"

# where we will keep our sources and build from.
SRCDIR="${BUILDDIR}/src"
mkdir -p $SRCDIR
# where we will store intermediary builds
INTERDIR="${BUILDDIR}/built"
mkdir -p $INTERDIR

########################################

cd $SRCDIR

# Exit the script if an error happens
set -e

if [ ! -e "${SRCDIR}/opus-${VERSION}.tar.gz" ]; then
    echo "Downloading opus-${VERSION}.tar.gz"
    curl -LO http://downloads.xiph.org/releases/opus/opus-${VERSION}.tar.gz
fi
echo "Using opus-${VERSION}.tar.gz"

tar zxf opus-${VERSION}.tar.gz -C $SRCDIR
cd "${SRCDIR}/opus-${VERSION}"

set +e # don't bail out of bash script if ccache doesn't exist
CCACHE=`which ccache`
if [ $? == "0" ]; then
    echo "Building with ccache: $CCACHE"
    CCACHE="${CCACHE} "
else
    echo "Building without ccache"
    CCACHE=""
fi
set -e # back to regular "bail out on error" mode

export ORIGINALPATH=$PATH

for ARCH in ${ARCHS}
do
    if [ "${ARCH}" == "i386" ] || [ "${ARCH}" == "x86_64" ]; then
        PLATFORM="iPhoneSimulator"
        EXTRA_CFLAGS="-arch ${ARCH}"
        EXTRA_CONFIG="--host=x86_64-apple-darwin"
    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 ${INTERDIR}
rm -fr "${SRCDIR}/opus-${VERSION}"
echo "Done."