Build tesseract v3 libraries for all iOS architectures

build_tesseract.sh

#!/bin/sh
# build.sh

GLOBAL_OUTDIR="`pwd`/dependencies"
LOCAL_OUTDIR="./outdir"
LEPTON_LIB="`pwd`/leptonica-1.71"
TESSERACT_LIB="`pwd`/tesseract-ocr"

IOS_BASE_SDK="7.1"
IOS_DEPLOY_TGT="7.1"

setenv_all()
{
	# Add internal libs
	export CFLAGS="$CFLAGS -I$GLOBAL_OUTDIR/include -L$GLOBAL_OUTDIR/lib"
	
	export CXX="/usr/bin/llvm-g++"
	export CC="/usr/bin/llvm-gcc"

	export LD=$DEVROOT/usr/bin/ld
	export AR=$DEVROOT/usr/bin/ar
	export AS=$DEVROOT/usr/bin/as
	export NM=$DEVROOT/usr/bin/nm
	export RANLIB=$DEVROOT/usr/bin/ranlib
	export LDFLAGS="-L$SDKROOT/usr/lib/"
	
	export CPPFLAGS=$CFLAGS
	export CXXFLAGS=$CFLAGS
}

setenv_arm7()
{
	unset DEVROOT SDKROOT CFLAGS CC LD CPP CXX AR AS NM CXXCPP RANLIB LDFLAGS CPPFLAGS CXXFLAGS
	
	export DEVROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer
	export SDKROOT=$DEVROOT/SDKs/iPhoneOS$IOS_BASE_SDK.sdk
	
	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 CC LD CPP CXX AR AS NM CXXCPP RANLIB LDFLAGS CPPFLAGS CXXFLAGS
	
	export DEVROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer
	export SDKROOT=$DEVROOT/SDKs/iPhoneOS$IOS_BASE_SDK.sdk
	
	export CFLAGS="-arch armv7s -pipe -no-cpp-precomp -isysroot $SDKROOT -miphoneos-version-min=$IOS_DEPLOY_TGT -I$SDKROOT/usr/include/"
	
	setenv_all
}

setenv_i386()
{
	unset DEVROOT SDKROOT CFLAGS CC LD CPP CXX AR AS NM CXXCPP RANLIB LDFLAGS CPPFLAGS CXXFLAGS
	
	export DEVROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer
	export SDKROOT=$DEVROOT/SDKs/iPhoneSimulator$IOS_BASE_SDK.sdk
	unset DEVROOT
	
	export CFLAGS="-arch i386 -pipe -no-cpp-precomp -isysroot $SDKROOT -miphoneos-version-min=$IOS_DEPLOY_TGT"
	
	setenv_all
}

create_outdir_lipo()
{
	for lib_i386 in `find $LOCAL_OUTDIR/i386 -name "lib*.a"`; do
		lib_arm7=`echo $lib_i386 | sed "s/i386/arm7/g"`
		lib_arm7s=`echo $lib_i386 | sed "s/i386/arm7s/g"`
		lib=`echo $lib_i386 | sed "s/i386//g"`
		xcrun -sdk iphoneos lipo -arch armv7s $lib_arm7s -arch armv7 $lib_arm7 -arch i386 $lib_i386 -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 -
}
# Build tesseract v3.x for all iOS architectures
# Adapted from http://tinsuke.wordpress.com/2011/11/01/how-to-compile-and-use-tesseract-3-01-on-ios-sdk-5/

#######################
# LEPTONLIB
#######################
cd $LEPTON_LIB
rm -rf $LOCAL_OUTDIR
mkdir -p $LOCAL_OUTDIR/arm7 $LOCAL_OUTDIR/i386 $LOCAL_OUTDIR/arm7s

make clean 2> /dev/null
make distclean 2> /dev/null
setenv_arm7
./configure --host=arm-apple-darwin7 --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/arm7
read

make clean 2> /dev/null
make distclean 2> /dev/null
setenv_arm7s
./configure --host=arm-apple-darwin7s --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/arm7s
read

make clean 2> /dev/null
make distclean 2> /dev/null
setenv_i386
./configure --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/i386
read

create_outdir_lipo
mkdir -p $GLOBAL_OUTDIR/include/leptonica && cp -rvf src/*.h $GLOBAL_OUTDIR/include/leptonica
mkdir -p $GLOBAL_OUTDIR/lib && cp -rvf $LOCAL_OUTDIR/lib*.a $GLOBAL_OUTDIR/lib
cd ..
read


#######################
# TESSERACT-OCR (v3)
#######################
cd $TESSERACT_LIB
rm -rf $LOCAL_OUTDIR
mkdir -p $LOCAL_OUTDIR/arm7 $LOCAL_OUTDIR/i386 $LOCAL_OUTDIR/arm7s


make clean 2> /dev/null
make distclean 2> /dev/null
setenv_arm7
bash autogen.sh
./configure --host=arm-apple-darwin7 --enable-shared=no LIBLEPT_HEADERSDIR=$GLOBAL_OUTDIR/include/
make -j12
for i in `find . -name "lib*.a" | grep -v arm`; do cp -rvf $i $LOCAL_OUTDIR/arm7; done
merge_libfiles $LOCAL_OUTDIR/arm7 libtesseract_all.a
read

make clean 2> /dev/null
make distclean 2> /dev/null
setenv_arm7s
bash autogen.sh
./configure --host=arm-apple-darwin7s --enable-shared=no LIBLEPT_HEADERSDIR=$GLOBAL_OUTDIR/include/
make -j12
for i in `find . -name "lib*.a" | grep -v arm`; do cp -rvf $i $LOCAL_OUTDIR/arm7s; done
merge_libfiles $LOCAL_OUTDIR/arm7s libtesseract_all.a
read

make clean 2> /dev/null
make distclean 2> /dev/null
setenv_i386
bash autogen.sh
./configure --enable-shared=no LIBLEPT_HEADERSDIR=$GLOBAL_OUTDIR/include/
make -j12
for i in `find . -name "lib*.a" | grep -v arm`; do cp -rvf $i $LOCAL_OUTDIR/i386; done
merge_libfiles $LOCAL_OUTDIR/i386 libtesseract_all.a
read

create_outdir_lipo
mkdir -p $GLOBAL_OUTDIR/include/tesseract
tess_inc=( api/apitypes.h api/baseapi.h ccmain/thresholder.h ccstruct/publictypes.h ccutil/errcode.h
           ccutil/genericvector.h ccutil/helpers.h ccutil/host.h ccutil/ndminx.h ccutil/ocrclass.h
           ccutil/platform.h ccutil/tesscallback.h ccutil/unichar.h )
for i in "${tess_inc[@]}"; do
   cp -rvf $i $GLOBAL_OUTDIR/include/tesseract
done
mkdir -p $GLOBAL_OUTDIR/lib && cp -rvf $LOCAL_OUTDIR/lib*.a $GLOBAL_OUTDIR/lib
make clean 2> /dev/null
make distclean 2> /dev/null
rm -rf $LOCAL_OUTDIR
cd ..

echo "Finished!"