Compile Tesseract 3.05 - Leptonica 1.76 for iOS 10 and Xcode 8.3 on OSX (10.13)

#!/bin/sh

GLOBAL_OUTDIR="`pwd`/dependencies"
LOCAL_OUTDIR="./outdir"
LEPTON_LIB="`pwd`/leptonica-1.76.0"
TESSERACT_LIB="`pwd`/tesseract-3.05.02"
# OPENCV_LIB = "`pwd`/opencv_3.4.1_5"

IOS_BASE_SDK="10.3"
IOS_DEPLOY_TGT="8.0"

export CXX=`xcrun -find c++`
export CC=`xcrun -find cc`

export LD=`xcrun -find ld`
export AR=`xcrun -find ar`
export AS=`xcrun -find as`
export NM=`xcrun -find nm`
export RANLIB=`xcrun -find ranlib`

XCODE_DEVELOPER_PATH=/Applications/Xcode.app/Contents/Developer
XCODETOOLCHAIN_PATH=$XCODE_DEVELOPER_PATH/Toolchains/XcodeDefault.xctoolchain
SDK_IPHONEOS_PATH=$(xcrun --sdk iphoneos --show-sdk-path)
SDK_IPHONESIMULATOR_PATH=$(xcrun --sdk iphonesimulator --show-sdk-path)

export PATH="$XCODETOOLCHAIN_PATH/usr/bin:$PATH"

declare -a archs
archs=(arm7 arm7s arm64 i386 x86_64)

declare -a arch_name
arch_names=(arm-apple-darwin7 arm-apple-darwin7s arm-apple-darwin64 i386-apple-darwin x86_64-apple-darwin)

setenv_all() {
    # Add internal libs
    export CFLAGS="$CFLAGS -I$GLOBAL_OUTDIR/include -L$GLOBAL_OUTDIR/lib -Qunused-arguments"

    export LDFLAGS="-L$SDKROOT/usr/lib/"

    export CPPFLAGS=$CFLAGS
    export CXXFLAGS=$CFLAGS
}

setenv_arm7() {
    unset DEVROOT SDKROOT CFLAGS CPP CXXCPP LDFLAGS CPPFLAGS CXXFLAGS

    export SDKROOT=$SDK_IPHONEOS_PATH

    export CFLAGS="-arch armv7 -pipe -no-cpp-precomp -isysroot $SDKROOT -miphoneos-version-min=$IOS_DEPLOY_TGT -I$SDKROOT/usr/include/"

    setenv_all
}

setenv_arm7s() {
    unset DEVROOT SDKROOT CFLAGS CPP CXXCPP LDFLAGS CPPFLAGS CXXFLAGS

    export SDKROOT=$SDK_IPHONEOS_PATH

    export CFLAGS="-arch armv7s -pipe -no-cpp-precomp -isysroot $SDKROOT -miphoneos-version-min=$IOS_DEPLOY_TGT -I$SDKROOT/usr/include/"

    setenv_all
}

setenv_arm64() {
    unset DEVROOT SDKROOT CFLAGS CPP CXXCPP LDFLAGS CPPFLAGS CXXFLAGS

    export SDKROOT=$SDK_IPHONEOS_PATH

    export CFLAGS="-arch arm64 -pipe -no-cpp-precomp -isysroot $SDKROOT -miphoneos-version-min=$IOS_DEPLOY_TGT -I$SDKROOT/usr/include/"

    setenv_all
}

setenv_i386() {
    unset DEVROOT SDKROOT CFLAGS CPP CXXCPP LDFLAGS CPPFLAGS CXXFLAGS

    export SDKROOT=$SDK_IPHONESIMULATOR_PATH

    export CFLAGS="-arch i386 -pipe -no-cpp-precomp -isysroot $SDKROOT -miphoneos-version-min=$IOS_DEPLOY_TGT"

    setenv_all
}

setenv_x86_64() {
    unset DEVROOT SDKROOT CFLAGS CPP CXXCPP LDFLAGS CPPFLAGS CXXFLAGS

    export SDKROOT=$SDK_IPHONESIMULATOR_PATH

    export CFLAGS="-arch x86_64 -pipe -no-cpp-precomp -isysroot $SDKROOT -miphoneos-version-min=$IOS_DEPLOY_TGT"

    setenv_all
}

create_outdir_lipo() {
    for file in `find $LOCAL_OUTDIR/i386 -name "lib*.a"`; do
        lib_arm7=`echo $file | sed "s/i386/arm7/g"`
        lib_arm7s=`echo $file | sed "s/i386/arm7s/g"`
        lib_arm64=`echo $file | sed "s/i386/arm64/g"`
        lib_x86_64=`echo $file | sed "s/i386/x86_64/g"`
        lib_i386=`echo $file`
        lib=`echo $file | sed "s/i386//g"`
        xcrun -sdk iphoneos lipo -arch armv7s $lib_arm7s -arch armv7 $lib_arm7 -arch arm64 $lib_arm64 -arch i386 $lib_i386 -arch x86_64 $lib_x86_64 -create -output $lib
    done
}

merge_libfiles() {
    DIR=$1
    LIBNAME=$2

    cd $DIR
    for i in `find . -name "lib*.a"`; do
        $AR -x $i
    done
    $AR -r $LIBNAME *.o
    rm -rf *.o __*
    cd -
}


#######################
# LEPTONLIB
#######################
cd $LEPTON_LIB
rm -rf $LOCAL_OUTDIR

for n in "${!archs[@]}"
do
    mkdir -p "$LOCAL_OUTDIR/${archs[$n]}"
    make clean 2> /dev/null
    make distclean 2> /dev/null
    eval "setenv_${archs[$n]}"
    ./configure --host="${arch_names[$n]}" --enable-shared=no --disable-programs --without-zlib --without-libpng --without-jpeg --without-giflib --without-libtiff
    make -j12
    cp -rvf src/.libs/lib*.a "$LOCAL_OUTDIR/${archs[$n]}"
done

create_outdir_lipo
mkdir -p $GLOBAL_OUTDIR/include/leptonica && find ./ -name '*.h' -exec cp {} $GLOBAL_OUTDIR/include/leptonica/  \;
mkdir -p $GLOBAL_OUTDIR/lib && cp -rvf $LOCAL_OUTDIR/lib*.a $GLOBAL_OUTDIR/lib
cd ..


#######################
# TESSERACT-OCR
#######################
cd $TESSERACT_LIB
rm -rf $LOCAL_OUTDIR

for n in "${!archs[@]}"
do
    mkdir -p "$LOCAL_OUTDIR/${archs[$n]}"
    make clean 2> /dev/null
    make distclean 2> /dev/null
    eval "setenv_${archs[$n]}"
    bash autogen.sh
    LIBLEPT_HEADERSDIR=$GLOBAL_OUTDIR/include ./configure --host="${arch_names[$n]}" --enable-shared=no
    make -j12
    for i in `find . -name "lib*.a" | grep -v $LOCAL_OUTDIR`; do cp -rvf $i "$LOCAL_OUTDIR/${archs[$n]}"; done
    merge_libfiles "$LOCAL_OUTDIR/${archs[$n]}" libtesseract_all.a
done

create_outdir_lipo

mkdir -p $GLOBAL_OUTDIR/include/tesseract && find ./ -name '*.h' -exec cp {} $GLOBAL_OUTDIR/include/tesseract/  \;
mkdir -p $GLOBAL_OUTDIR/lib && cp -rvf $LOCAL_OUTDIR/lib*.a $GLOBAL_OUTDIR/lib
make clean 2> /dev/null
make distclean 2> /dev/null
cd ..

echo "Finished!"