1#!/bin/bash 2# 3# This script generates 'WebP.framework' and 'WebPDecoder.framework', 4# 'WebPDemux.framework' and 'WebPMux.framework'. 5# An iOS app can decode WebP images by including 'WebPDecoder.framework' and 6# both encode and decode WebP images by including 'WebP.framework'. 7# 8# Run ./iosbuild.sh to generate the frameworks under the current directory 9# (the previous build will be erased if it exists). 10# 11# This script is inspired by the build script written by Carson McDonald. 12# (https://www.ioncannon.net/programming/1483/using-webp-to-reduce-native-ios-app-size/). 13 14set -e 15 16# Set this variable based on the desired minimum deployment target. 17readonly IOS_MIN_VERSION=6.0 18 19# Extract the latest SDK version from the final field of the form: iphoneosX.Y 20readonly SDK=$(xcodebuild -showsdks \ 21 | grep iphoneos | sort | tail -n 1 | awk '{print substr($NF, 9)}' 22) 23# Extract Xcode version. 24readonly XCODE=$(xcodebuild -version | grep Xcode | cut -d " " -f2) 25if [[ -z "${XCODE}" ]]; then 26 echo "Xcode not available" 27 exit 1 28fi 29 30readonly OLDPATH=${PATH} 31 32# Add iPhoneOS-V6 to the list of platforms below if you need armv6 support. 33# Note that iPhoneOS-V6 support is not available with the iOS6 SDK. 34PLATFORMS="iPhoneSimulator iPhoneSimulator64" 35PLATFORMS+=" iPhoneOS-V7 iPhoneOS-V7s iPhoneOS-V7-arm64" 36readonly PLATFORMS 37readonly SRCDIR=$(dirname $0) 38readonly TOPDIR=$(pwd) 39readonly BUILDDIR="${TOPDIR}/iosbuild" 40readonly TARGETDIR="${TOPDIR}/WebP.framework" 41readonly DECTARGETDIR="${TOPDIR}/WebPDecoder.framework" 42readonly MUXTARGETDIR="${TOPDIR}/WebPMux.framework" 43readonly DEMUXTARGETDIR="${TOPDIR}/WebPDemux.framework" 44readonly SHARPYUVTARGETDIR="${TOPDIR}/SharpYuv.framework" 45readonly DEVELOPER=$(xcode-select --print-path) 46readonly PLATFORMSROOT="${DEVELOPER}/Platforms" 47readonly LIPO=$(xcrun -sdk iphoneos${SDK} -find lipo) 48LIBLIST='' 49DECLIBLIST='' 50MUXLIBLIST='' 51DEMUXLIBLIST='' 52 53if [[ -z "${SDK}" ]]; then 54 echo "iOS SDK not available" 55 exit 1 56elif [[ ${SDK%%.*} -gt 8 ]]; then 57 EXTRA_CFLAGS="-fembed-bitcode" 58elif [[ ${SDK%%.*} -le 6 ]]; then 59 echo "You need iOS SDK version 6.0 or above" 60 exit 1 61fi 62 63echo "Xcode Version: ${XCODE}" 64echo "iOS SDK Version: ${SDK}" 65 66if [[ -e "${BUILDDIR}" || -e "${TARGETDIR}" || -e "${DECTARGETDIR}" \ 67 || -e "${MUXTARGETDIR}" || -e "${DEMUXTARGETDIR}" \ 68 || -e "${SHARPYUVTARGETDIR}" ]]; then 69 cat << EOF 70WARNING: The following directories will be deleted: 71WARNING: ${BUILDDIR} 72WARNING: ${TARGETDIR} 73WARNING: ${DECTARGETDIR} 74WARNING: ${MUXTARGETDIR} 75WARNING: ${DEMUXTARGETDIR} 76WARNING: ${SHARPYUVTARGETDIR} 77WARNING: The build will continue in 5 seconds... 78EOF 79 sleep 5 80fi 81rm -rf ${BUILDDIR} ${TARGETDIR} ${DECTARGETDIR} \ 82 ${MUXTARGETDIR} ${DEMUXTARGETDIR} ${SHARPYUVTARGETDIR} 83mkdir -p ${BUILDDIR} ${TARGETDIR}/Headers/ ${DECTARGETDIR}/Headers/ \ 84 ${MUXTARGETDIR}/Headers/ ${DEMUXTARGETDIR}/Headers/ \ 85 ${SHARPYUVTARGETDIR}/Headers/ 86 87if [[ ! -e ${SRCDIR}/configure ]]; then 88 if ! (cd ${SRCDIR} && sh autogen.sh); then 89 cat << EOF 90Error creating configure script! 91This script requires the autoconf/automake and libtool to build. MacPorts can 92be used to obtain these: 93https://www.macports.org/install.php 94EOF 95 exit 1 96 fi 97fi 98 99for PLATFORM in ${PLATFORMS}; do 100 ARCH2="" 101 if [[ "${PLATFORM}" == "iPhoneOS-V7-arm64" ]]; then 102 PLATFORM="iPhoneOS" 103 ARCH="aarch64" 104 ARCH2="arm64" 105 elif [[ "${PLATFORM}" == "iPhoneOS-V7s" ]]; then 106 PLATFORM="iPhoneOS" 107 ARCH="armv7s" 108 elif [[ "${PLATFORM}" == "iPhoneOS-V7" ]]; then 109 PLATFORM="iPhoneOS" 110 ARCH="armv7" 111 elif [[ "${PLATFORM}" == "iPhoneOS-V6" ]]; then 112 PLATFORM="iPhoneOS" 113 ARCH="armv6" 114 elif [[ "${PLATFORM}" == "iPhoneSimulator64" ]]; then 115 PLATFORM="iPhoneSimulator" 116 ARCH="x86_64" 117 else 118 ARCH="i386" 119 fi 120 121 ROOTDIR="${BUILDDIR}/${PLATFORM}-${SDK}-${ARCH}" 122 mkdir -p "${ROOTDIR}" 123 124 DEVROOT="${DEVELOPER}/Toolchains/XcodeDefault.xctoolchain" 125 SDKROOT="${PLATFORMSROOT}/" 126 SDKROOT+="${PLATFORM}.platform/Developer/SDKs/${PLATFORM}${SDK}.sdk/" 127 CFLAGS="-arch ${ARCH2:-${ARCH}} -pipe -isysroot ${SDKROOT} -O3 -DNDEBUG" 128 CFLAGS+=" -miphoneos-version-min=${IOS_MIN_VERSION} ${EXTRA_CFLAGS}" 129 130 set -x 131 export PATH="${DEVROOT}/usr/bin:${OLDPATH}" 132 ${SRCDIR}/configure --host=${ARCH}-apple-darwin --prefix=${ROOTDIR} \ 133 --build=$(${SRCDIR}/config.guess) \ 134 --disable-shared --enable-static \ 135 --enable-libwebpdecoder --enable-swap-16bit-csp \ 136 --enable-libwebpmux \ 137 CFLAGS="${CFLAGS}" 138 set +x 139 140 # Build only the libraries, skip the examples. 141 make V=0 -C sharpyuv install 142 make V=0 -C src install 143 144 LIBLIST+=" ${ROOTDIR}/lib/libwebp.a" 145 DECLIBLIST+=" ${ROOTDIR}/lib/libwebpdecoder.a" 146 MUXLIBLIST+=" ${ROOTDIR}/lib/libwebpmux.a" 147 DEMUXLIBLIST+=" ${ROOTDIR}/lib/libwebpdemux.a" 148 SHARPYUVLIBLIST+=" ${ROOTDIR}/lib/libsharpyuv.a" 149 150 make clean 151 152 export PATH=${OLDPATH} 153done 154 155echo "LIBLIST = ${LIBLIST}" 156cp -a ${SRCDIR}/src/webp/{decode,encode,types}.h ${TARGETDIR}/Headers/ 157${LIPO} -create ${LIBLIST} -output ${TARGETDIR}/WebP 158 159echo "DECLIBLIST = ${DECLIBLIST}" 160cp -a ${SRCDIR}/src/webp/{decode,types}.h ${DECTARGETDIR}/Headers/ 161${LIPO} -create ${DECLIBLIST} -output ${DECTARGETDIR}/WebPDecoder 162 163echo "MUXLIBLIST = ${MUXLIBLIST}" 164cp -a ${SRCDIR}/src/webp/{types,mux,mux_types}.h \ 165 ${MUXTARGETDIR}/Headers/ 166${LIPO} -create ${MUXLIBLIST} -output ${MUXTARGETDIR}/WebPMux 167 168echo "DEMUXLIBLIST = ${DEMUXLIBLIST}" 169cp -a ${SRCDIR}/src/webp/{decode,types,mux_types,demux}.h \ 170 ${DEMUXTARGETDIR}/Headers/ 171${LIPO} -create ${DEMUXLIBLIST} -output ${DEMUXTARGETDIR}/WebPDemux 172 173echo "SHARPYUVLIBLIST = ${SHARPYUVLIBLIST}" 174cp -a ${SRCDIR}/sharpyuv/{sharpyuv,sharpyuv_csp}.h \ 175 ${SHARPYUVTARGETDIR}/Headers/ 176${LIPO} -create ${SHARPYUVLIBLIST} -output ${SHARPYUVTARGETDIR}/SharpYuv 177 178echo "SUCCESS" 179