1#!/bin/bash 2# 3# This script generates 'WebP.framework' and 'WebPDecoder.framework'. An iOS 4# app can decode WebP images by including 'WebPDecoder.framework' and both 5# encode and decode WebP images by including 'WebP.framework'. 6# 7# Run ./iosbuild.sh to generate the frameworks under the current directory 8# (the previous build will be erased if it exists). 9# 10# This script is inspired by the build script written by Carson McDonald. 11# (http://www.ioncannon.net/programming/1483/using-webp-to-reduce-native-ios-app-size/). 12 13set -e 14 15# Extract the latest SDK version from the final field of the form: iphoneosX.Y 16readonly SDK=$(xcodebuild -showsdks \ 17 | grep iphoneos | sort | tail -n 1 | awk '{print substr($NF, 9)}' 18) 19# Extract Xcode version. 20readonly XCODE=$(xcodebuild -version | grep Xcode | cut -d " " -f2) 21if [[ -z "${XCODE}" ]]; then 22 echo "Xcode not available" 23 exit 1 24fi 25 26readonly OLDPATH=${PATH} 27 28# Add iPhoneOS-V6 to the list of platforms below if you need armv6 support. 29# Note that iPhoneOS-V6 support is not available with the iOS6 SDK. 30PLATFORMS="iPhoneSimulator iPhoneSimulator64" 31PLATFORMS+=" iPhoneOS-V7 iPhoneOS-V7s iPhoneOS-V7-arm64" 32readonly PLATFORMS 33readonly SRCDIR=$(dirname $0) 34readonly TOPDIR=$(pwd) 35readonly BUILDDIR="${TOPDIR}/iosbuild" 36readonly TARGETDIR="${TOPDIR}/WebP.framework" 37readonly DECTARGETDIR="${TOPDIR}/WebPDecoder.framework" 38readonly DEVELOPER=$(xcode-select --print-path) 39readonly PLATFORMSROOT="${DEVELOPER}/Platforms" 40readonly LIPO=$(xcrun -sdk iphoneos${SDK} -find lipo) 41LIBLIST='' 42DECLIBLIST='' 43 44if [[ -z "${SDK}" ]]; then 45 echo "iOS SDK not available" 46 exit 1 47elif [[ ${SDK%%.*} -gt 8 ]]; then 48 EXTRA_CFLAGS="-fembed-bitcode" 49elif [[ ${SDK} < 6.0 ]]; then 50 echo "You need iOS SDK version 6.0 or above" 51 exit 1 52else 53 echo "iOS SDK Version ${SDK}" 54fi 55 56rm -rf ${BUILDDIR} ${TARGETDIR} ${DECTARGETDIR} 57mkdir -p ${BUILDDIR} ${TARGETDIR}/Headers/ ${DECTARGETDIR}/Headers/ 58 59if [[ ! -e ${SRCDIR}/configure ]]; then 60 if ! (cd ${SRCDIR} && sh autogen.sh); then 61 cat <<EOT 62Error creating configure script! 63This script requires the autoconf/automake and libtool to build. MacPorts can 64be used to obtain these: 65http://www.macports.org/install.php 66EOT 67 exit 1 68 fi 69fi 70 71for PLATFORM in ${PLATFORMS}; do 72 ARCH2="" 73 if [[ "${PLATFORM}" == "iPhoneOS-V7-arm64" ]]; then 74 PLATFORM="iPhoneOS" 75 ARCH="aarch64" 76 ARCH2="arm64" 77 elif [[ "${PLATFORM}" == "iPhoneOS-V7s" ]]; then 78 PLATFORM="iPhoneOS" 79 ARCH="armv7s" 80 elif [[ "${PLATFORM}" == "iPhoneOS-V7" ]]; then 81 PLATFORM="iPhoneOS" 82 ARCH="armv7" 83 elif [[ "${PLATFORM}" == "iPhoneOS-V6" ]]; then 84 PLATFORM="iPhoneOS" 85 ARCH="armv6" 86 elif [[ "${PLATFORM}" == "iPhoneSimulator64" ]]; then 87 PLATFORM="iPhoneSimulator" 88 ARCH="x86_64" 89 else 90 ARCH="i386" 91 fi 92 93 ROOTDIR="${BUILDDIR}/${PLATFORM}-${SDK}-${ARCH}" 94 mkdir -p "${ROOTDIR}" 95 96 DEVROOT="${DEVELOPER}/Toolchains/XcodeDefault.xctoolchain" 97 SDKROOT="${PLATFORMSROOT}/" 98 SDKROOT+="${PLATFORM}.platform/Developer/SDKs/${PLATFORM}${SDK}.sdk/" 99 CFLAGS="-arch ${ARCH2:-${ARCH}} -pipe -isysroot ${SDKROOT} -O3 -DNDEBUG" 100 CFLAGS+=" -miphoneos-version-min=6.0 ${EXTRA_CFLAGS}" 101 102 set -x 103 export PATH="${DEVROOT}/usr/bin:${OLDPATH}" 104 ${SRCDIR}/configure --host=${ARCH}-apple-darwin --prefix=${ROOTDIR} \ 105 --build=$(${SRCDIR}/config.guess) \ 106 --disable-shared --enable-static \ 107 --enable-libwebpdecoder --enable-swap-16bit-csp \ 108 CFLAGS="${CFLAGS}" 109 set +x 110 111 # run make only in the src/ directory to create libwebp.a/libwebpdecoder.a 112 cd src/ 113 make V=0 114 make install 115 116 LIBLIST+=" ${ROOTDIR}/lib/libwebp.a" 117 DECLIBLIST+=" ${ROOTDIR}/lib/libwebpdecoder.a" 118 119 make clean 120 cd .. 121 122 export PATH=${OLDPATH} 123done 124 125cp -a ${SRCDIR}/src/webp/{decode,encode,types}.h ${TARGETDIR}/Headers/ 126${LIPO} -create ${LIBLIST} -output ${TARGETDIR}/WebP 127 128cp -a ${SRCDIR}/src/webp/{decode,types}.h ${DECTARGETDIR}/Headers/ 129${LIPO} -create ${DECLIBLIST} -output ${DECTARGETDIR}/WebPDecoder 130