build_zlib_iOS.sh

rm -rf install_*
rm -rf output-*

${LIB_VERSION:=1.2.8}
${TARBALLDIR:=`pwd`}
${SRCDIR:=`pwd`}

LIB_TARBALL=$TARBALLDIR/zlib-$LIB_VERSION.tar.gz
LIB_SRC=$SRCDIR/zlib-${LIB_VERSION}

if [ ! -s $LIB_TARBALL ]; then
	echo "Downloading zlib ${LIB_VERSION}"
	curl -L -o $LIB_TARBALL http://sourceforge.net/projects/libpng/files/zlib/${LIB_VERSION}/zlib-${LIB_VERSION}.tar.gz
fi

[ -f "$LIB_TARBALL" ] || abort "Source tarball missing."

echo Unpacking zlib into $SRCDIR...

[ -d $SRCDIR ]    || mkdir -p $SRCDIR
[ -d $LIB_SRC ] || ( cd $SRCDIR; tar xfj $LIB_TARBALL )
[ -d $LIB_SRC ] && echo "    ...unpacked as $LIB_SRC"

cd $LIB_SRC

# build simulator

export CFLAGS="-Ofast -mios-version-min=5.0 -fembed-bitcode"
export LDFLAGS="-flto"
export CC="xcrun -sdk iphonesimulator clang -arch i386"

./configure --prefix=`pwd`/install_i386   
make clean && make -j8 && make install

export CFLAGS="-Ofast -mios-version-min=5.0"
export LDFLAGS="-flto"
export CC="xcrun -sdk iphonesimulator clang -arch x86_64"

./configure --prefix=`pwd`/install_x86_64   
make clean && make -j8 && make install

# build armv7

export CFLAGS="-Ofast -mios-version-min=5.0"
export LDFLAGS="-flto"
export CC="xcrun -sdk iphoneos clang -arch armv7"

./configure --prefix=`pwd`/install_armv7
make clean && make -j8 && make install

# build armv7s

export CFLAGS="-Ofast -mios-version-min=5.0"
export LDFLAGS="-flto"
export CC="xcrun -sdk iphoneos clang -arch armv7s"

./configure --prefix=`pwd`/install_armv7s
make clean && make -j8 && make install

# build armv7s

export CFLAGS="-Ofast -mios-version-min=5.0"
export LDFLAGS="-flto"
export CC="xcrun -sdk iphoneos clang -arch arm64"

./configure --prefix=`pwd`/install_arm64
make clean && make -j8 && make install

# build universal
mkdir -p output-ios
xcrun lipo -create $(find install_*/lib -name "libz.a") -o output-ios/libz.a
cp -r install_armv7/include output-ios/.