libwebp/iosbuild.sh

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#!/bin/bash
#
# This script generates 'WebP.framework'. An iOS app can decode WebP images
# by including 'WebP.framework'.
#
# Run ./iosbuild.sh to generate 'WebP.framework' under the current directory
# (previous build will be erased if it exists).
#
# This script is inspired by the build script written by Carson McDonald.
# (http://www.ioncannon.net/programming/1483/using-webp-to-reduce-native-ios-app-size/).
set -e
# Extract the latest SDK version from the final field of the form: iphoneosX.Y
declare -r SDK=$(xcodebuild -showsdks \
| grep iphoneos | sort | tail -n 1 | awk '{ print substr($NF, 9)}'
)
declare -r OLDPATH=${PATH}
# Add iPhoneOS-V6 to the list of platforms below if you need armv6 support.
# Note that iPhoneOS-V6 support is not available with the iOS6 SDK.
declare -r PLATFORMS="iPhoneSimulator iPhoneOS-V7 iPhoneOS-V7s"
declare -r SRCDIR=$(dirname $0)
declare -r TOPDIR=$(pwd)
declare -r BUILDDIR="${TOPDIR}/iosbuild"
declare -r TARGETDIR="${TOPDIR}/WebP.framework"
declare -r DEVELOPER=$(xcode-select --print-path)
declare -r PLATFORMSROOT="${DEVELOPER}/Platforms"
declare -r LIPO=$(xcrun -sdk iphoneos${SDK} -find lipo)
LIBLIST=''
if [[ -z "${SDK}" ]]; then
echo "iOS SDK not available"
exit 1
elif [[ ${SDK} < 4.0 ]]; then
echo "You need iOS SDK version 4.0 or above"
exit 1
else
echo "iOS SDK Version ${SDK}"
fi
rm -rf ${BUILDDIR}
rm -rf ${TARGETDIR}
mkdir -p ${BUILDDIR}
mkdir -p ${TARGETDIR}/Headers/
[[ -e ${SRCDIR}/configure ]] || (cd ${SRCDIR} && sh autogen.sh)
for PLATFORM in ${PLATFORMS}; do
if [[ "${PLATFORM}" == "iPhoneOS-V7s" ]]; then
PLATFORM="iPhoneOS"
ARCH="armv7s"
elif [[ "${PLATFORM}" == "iPhoneOS-V7" ]]; then
PLATFORM="iPhoneOS"
ARCH="armv7"
elif [[ "${PLATFORM}" == "iPhoneOS-V6" ]]; then
PLATFORM="iPhoneOS"
ARCH="armv6"
else
ARCH="i386"
fi
ROOTDIR="${BUILDDIR}/${PLATFORM}-${SDK}-${ARCH}"
mkdir -p "${ROOTDIR}"
export DEVROOT="${PLATFORMSROOT}/${PLATFORM}.platform/Developer"
export SDKROOT="${DEVROOT}/SDKs/${PLATFORM}${SDK}.sdk"
export CFLAGS="-arch ${ARCH} -pipe -isysroot ${SDKROOT}"
export CXXFLAGS=${CFLAGS}
export LDFLAGS="-arch ${ARCH} -pipe -isysroot ${SDKROOT}"
export PATH="${DEVROOT}/usr/bin:${OLDPATH}"
${SRCDIR}/configure --host=${ARCH}-apple-darwin --prefix=${ROOTDIR} \
--disable-shared --enable-static \
--enable-libwebpdecoder --enable-swap-16bit-csp
# run make only in the src/ directory to create libwebpdecoder.a
cd src/
make
make install
LIBLIST+=" ${ROOTDIR}/lib/libwebpdecoder.a"
make clean
cd ..
export PATH=${OLDPATH}
done
cp -a src/webp/* ${TARGETDIR}/Headers/
${LIPO} -create ${LIBLIST} -output ${TARGETDIR}/WebP