iosbuild.sh

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