Scripts for building Gdal into a static library for iOS, build-gdal-combined-lib.sh will build a single lib with armv7 armv7s arm64 and simulator slices

build-gdal-combined-lib.sh

#!/bin/bash
PREFIX=`pwd`/install/
rm -rf $PREFIX
mkdir $PREFIX
LOG=./log
rm -rf $LOG
mkdir $LOG

if [ -e ${PREFIX} ]
then
	echo removing ${PREFIX}
	rm -rf ${PREFIX}
fi

mkdir ${PREFIX}

for f in "armv7" "armv7s" "arm64"; do
echo Building $f
./build_gdal_ios.sh -p ${PREFIX} -a $f device 2>&1 | tee "${LOG}/${f}.txt"
done

echo Building simulator
for f in "i386" "x86_64"; do
echo Building $f
./build_gdal_ios.sh -p ${PREFIX} -a $f simulator 2>&1 | tee "${LOG}/simulator.txt"
done


SDK_VERSION=8.3

lipo \
${PREFIX}/i386/iphonesimulator${SDK_VERSION}.sdk/lib/libgdal.a \
${PREFIX}/x86_64/iphonesimulator${SDK_VERSION}.sdk/lib/libgdal.a \
${PREFIX}/armv7/iphoneos${SDK_VERSION}.sdk/lib/libgdal.a \
${PREFIX}/armv7s/iphoneos${SDK_VERSION}.sdk/lib/libgdal.a \
${PREFIX}/arm64/iphoneos${SDK_VERSION}.sdk/lib/libgdal.a \
-output ${PREFIX}/libgdal.a \
-create | tee $LOG/lipo.txt

lipo \
${PREFIX}/i386/iphonesimulator${SDK_VERSION}.sdk/lib/libproj.a \
${PREFIX}/x86_64/iphonesimulator${SDK_VERSION}.sdk/lib/libproj.a \
${PREFIX}/armv7/iphoneos${SDK_VERSION}.sdk/lib/libproj.a \
${PREFIX}/armv7s/iphoneos${SDK_VERSION}.sdk/lib/libproj.a \
${PREFIX}/arm64/iphoneos${SDK_VERSION}.sdk/lib/libproj.a \
-output ${PREFIX}/libproj.a \
-create | tee $LOG/lipo-proj.txt

#create zipfile for cocoapods distribution
cd ${PREFIX}
mkdir GDAL
cp libgdal.a ${PREFIX}/libproj.a GDAL
cp arm64/iphoneos8.3.sdk/include/*.h GDAL
zip gdal.zip GDAL/*

build_gdal_ios.sh

#!/bin/bash
set -u

default_iphoneos_version=8.3
default_architecture=armv7

export IPHONEOS_DEPLOYMENT_TARGET="${IPHONEOS_DEPLOYMENT_TARGET:-$default_iphoneos_version}"
DEFAULT_ARCHITECTURE="${DEFAULT_ARCHITECTURE:-$default_architecture}"
DEFAULT_PREFIX="${HOME}/Desktop/iOS_GDAL"


usage ()
    {
cat >&2 << EOF
    Usage: ${0} [-h] [-p prefix] [-a arch] target [configure_args]
        -h  Print help message
        -p  Installation prefix (default: \$HOME/Documents/iOS_GDAL...)
        -a  Architecture target for compilation (default: armv7)

    The target must be "device" or "simulator".  Any additional arguments
    are passed to configure.

    The following environment variables affect the build process:

        IPHONEOS_DEPLOYMENT_TARGET  (default: $default_iphoneos_version)
        DEFAULT_PREFIX  (default: $default_prefix)
EOF
    }

prefix="${DEFAULT_PREFIX}"

while getopts ":hp:a:" opt; do
        case $opt in
        h  ) usage ; exit 0 ;;
        p  ) prefix="$OPTARG" ;;
        a  ) DEFAULT_ARCHITECTURE="$OPTARG" ;;
        \? ) usage ; exit 2 ;;
        esac
done
shift $(( $OPTIND - 1 ))

if (( $# < 1 )); then
    usage
    exit 2
fi

target=$1
shift

case $target in

        device )
        arch="${DEFAULT_ARCHITECTURE}"
        platform=iphoneos
        extra_cflags=" "
        ;;

        simulator )
        arch="${DEFAULT_ARCHITECTURE}"
        platform=iphonesimulator
        extra_cflags="-D__IPHONE_OS_VERSION_MIN_REQUIRED=${IPHONEOS_DEPLOYMENT_TARGET%%.*}0000"
        ;;

        * )
        echo No target found!!!
        usage
        exit 2

esac
if [ $arch = "arm64" ]
    then
    host="arm-apple-darwin"
else
    host="${arch}-apple-darwin"
fi

echo "building for host ${host}"

platform_dir=`xcrun -find -sdk ${platform} --show-sdk-platform-path`
platform_sdk_dir=`xcrun -find -sdk ${platform} --show-sdk-path`
prefix="${prefix}/${arch}/${platform}${IPHONEOS_DEPLOYMENT_TARGET}.sdk"

echo
echo library will be exported to $prefix

#setup compiler flags
export CC=`xcrun -find -sdk iphoneos gcc`
export CFLAGS="-Wno-error=implicit-function-declaration -arch ${arch} -pipe -Os -gdwarf-2 -isysroot ${platform_sdk_dir} ${extra_cflags}"
export LDFLAGS="-arch ${arch} -isysroot ${platform_sdk_dir}"
export CXX=`xcrun -find -sdk iphoneos g++`
export CXXFLAGS="${CFLAGS}"
export CPP=`xcrun -find -sdk iphoneos cpp`
export CXXCPP="${CPP}"

echo CFLAGS ${CFLAGS}

#set proj4 install destination
proj_prefix=$prefix
echo install proj to $proj_prefix

#download proj4 if necesary
if [ ! -e proj-4.8.0 ]
then
    echo proj4 missing, downloading
    wget http://download.osgeo.org/proj/proj-4.8.0.tar.gz
    tar -xzf proj-4.8.0.tar.gz
fi

#configure and build proj4
pushd proj-4.8.0

echo
echo "cleaning proj"
make clean

echo
echo "configure proj"
./configure \
    --prefix=${proj_prefix} \
    --enable-shared=no \
    --enable-static=yes \
    --host=$host \
    "$@" || exit

echo
echo "make install proj"
time make install || exit

popd

#download gdal if necesary
if [ ! -e gdal-1.11.2 ]
then
    wget http://download.osgeo.org/gdal/1.11.0/gdal-1.11.2.tar.gz
    tar -xzf gdal-1.11.2.tar.gz
fi

#configure and build gdal
cd gdal-1.11.2

echo "cleaning gdal"
make clean

echo
echo "configure gdal"
./configure \
    --prefix="${prefix}" \
    --host=$host \
    --disable-shared \
    --enable-static \
    --with-hide-internal-symbols \
    --with-unix-stdio-64=no \
    --with-geos=no \
    --without-pg \
    --without-grass \
    --without-libgrass \
    --without-cfitsio \
    --without-pcraster \
    --without-netcdf \
    --without-ogdi \
    --without-fme \
    --without-hdf4 \
    --without-hdf5 \
    --without-jasper \
    --without-kakadu \
    --without-grib \
    --without-mysql \
    --without-ingres \
    --without-xerces \
    --without-odbc \
    --without-curl \
    --without-idb \
    --without-sde \
    --with-sse=no \
    --with-avx=no \
    --with-static-proj4=${prefix} \
    --with-sqlite3=${platform_sdk_dir} \
    || exit

#echo '#include "cpl_config_extras.h"' >> port/cpl_config.h

echo
echo "building gdal"
time make

echo
echo "installing"
time make install

echo "Gdal build complete"

Note: the combined lib is 383mb, dont worry, it wont increase your app bundle by that much, probably only 10mb. It is also normal for it to take 45 minutes to build, thats why we have a static library for it.

what command should be enter in the terminal?

variable has incomplete type 'VSIStatBufL'
(aka 'stat64') how to fix it!

when i build there is a error
Unsupported architecture
please help me thanks。

@JesseCrocker why is it that the combined library is 380+ mb large (mine is actually 500+ mb all 5 combined), but it will only increase the app bundle by 10 mb? when i check the size of my app on my phone, it says 500mb!

@JesseCrocker works perfectly, thanks! I'm trying to modify the script to include GEOS support, but I can't figure out how. Do you happen to know how to do that?

getting this error?
Undefined symbols for architecture x86_64:
"_iconv", referenced from:
CPLRecodeIconv(char const*, char const*, char const*) in libgdal.a(cpl_recode_iconv.o)
CPLRecodeFromWCharIconv(wchar_t const*, char const*, char const*) in libgdal.a(cpl_recode_iconv.o)
"_iconv_close", referenced from:
CPLRecodeIconv(char const*, char const*, char const*) in libgdal.a(cpl_recode_iconv.o)
CPLRecodeFromWCharIconv(wchar_t const*, char const*, char const*) in libgdal.a(cpl_recode_iconv.o)
"_iconv_open", referenced from:
CPLRecodeIconv(char const*, char const*, char const*) in libgdal.a(cpl_recode_iconv.o)
CPLRecodeFromWCharIconv(wchar_t const*, char const*, char const*) in libgdal.a(cpl_recode_iconv.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[1]: *** [gdalinfo] Error 1
make: *** [apps-target] Error 2