Errors building Tesseract for Android on Mac

[codefully]

I have tried to build Tesseract for Android on a mac several times but keep getting errors. I followed the steps below:

curl -O https://tesseract-ocr.googlecode.com/files/tesseract-ocr-3.02.02.tar.gz

curl -O http://leptonica.googlecode.com/files/leptonica-1.69.tar.gz

tar -zxvf tesseract-ocr-3.02.02.tar.gz

tar -zxvf leptonica-1.69.tar.gz

rm -f tesseract-ocr-3.02.02.tar.gz

rm -f leptonica-1.69.tar.gz

mv tesseract-3.02.02 jni/com_googlecode_tesseract_android/src

mv leptonica-1.69 jni/com_googlecode_leptonica_android/src

ndk-build -j8

android update project --target 1 --path .

ant debug (release)

Whenever I get to the ndk-build -j8 step I get the following errors:

jni/com_googlecode_tesseract_android/src/dict/permdawg.cpp: In member function 'void tesseract::Dict::go_deeper_dawg_fxn(char const*, const BLOB_CHOICE_LIST_VECTOR&, int, const CHAR_FRAGMENT_INFO*, bool, WERD_CHOICE*, float*, float*, WERD_CHOICE*, int*, void*)':

jni/com_googlecode_tesseract_android/src/dict/permdawg.cpp:208:62: error: format not a string literal and no format arguments [-Werror=format-security]

Compile++ thumb  : tess <= states.cpp

cc1plus: some warnings being treated as errors

make: *** [obj/local/armeabi/objs/tess/src/dict/permdawg.o] Error 1

make: *** Waiting for unfinished jobs....

How can I solve this?

[Allistair]

When I did this I followed a tutorial that said you have to use an older version of the NDK - are you using the latest?

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[codefully]

I am using v9, or should I be using a version older than v9? The current version is 10.

[Allistair]

Here were my notes:

Leptonica & Tesseract native libraries

In order to use Tesseract with Android we must use the work of the tess-two fork project of the android-tools

First, Android NDK 10c must be installed. NDK is used to work with native C/C++ libraries on Android.

We obtained the NDK 10c bin and installed it on our Mac OS X development machine by extracting to /Applications. The path to the NDK was also added to the system environment variable PATH, i.e.

export PATH=$PATH:/Applications/android-ndk-r10c

Now tess-two was cloned:

git clone https://github.com/rmtheis/tess-two.git

And, moving into folder tess/tess-two, execution of ndk-build resulted in a src folder and a libs folder with Java sourcs and architecture-dependent folders with compiled libraries for liblept.so and libtess.so respectively.

To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/a2278ce9-645a-4186-88cc-7fd4f6319ec3%40googlegroups.com.

[codefully]

So once I am able to build tess-two I can use it as a library in my Tesseract project.

[Allistair]

Yes, here is more of my notes:

And, moving into folder tess/tess-two, execution of ndk-build resulted in a src folder and a libs folder with Java sourcs and architecture-dependent folders with compiled libraries for liblept.so and libtess.so respectively.

The src com folder was copied into the project main/java folder and the libs folder was copied to the project’s main folder and renamed jniLibs. Finally a synchronisation of the main folder was done in Android Studio.

To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/0aeab0fa-c0e6-4a24-959e-ff1e194d1fde%40googlegroups.com.