Cannot binarize bitmap on device running Android L

[tasti]

I'm getting an error when running Leptonica:

07-31 12:52:33.406    6216-6753/com.domain.name E/art﹕ dlopen("/data/app-lib/com.domain.name-2/liblept.so", RTLD_LAZY) failed: dlopen failed: cannot locate symbol "__sfp" referenced by "liblept.so"...
07-31 12:52:33.408    6216-6753/com.domain.name E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #1
    Process: com.domain.name, PID: 6216
    java.lang.RuntimeException: An error occured while executing doInBackground()
            at android.os.AsyncTask$3.done(AsyncTask.java:300)
            at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
            at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
            at java.util.concurrent.FutureTask.run(FutureTask.java:242)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:818)
     Caused by: java.lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol "__sfp" referenced by "liblept.so"...
            at java.lang.Runtime.loadLibrary(Runtime.java:364)
            at java.lang.System.loadLibrary(System.java:610)
            at com.googlecode.leptonica.android.ReadFile.<clinit>(ReadFile.java:31)
            at com.domain.name.BinarizeImageTask.doInBackground(BinarizeImageTask.java:42)
            at com.domain.name.BinarizeImageTask.doInBackground(BinarizeImageTask.java:18)
            at android.os.AsyncTask$2.call(AsyncTask.java:288)
            at java.util.concurrent.FutureTask.run(FutureTask.java:237)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:818)

Where BinarizeImageTask.java:42 is Pix pix = ReadFile.readBitmap(bitmap);

This issue only happens on my Nexus 5 running Android L Developer Preview. All other devices work without any issues.

[rmtheis]

Thanks for the report. Did you build with version r10 of the NDK? And is running the tests sufficient to get this error?

[tasti]

Yes, I downloaded NDK r10 yesterday and built it on the latest commit on master. I haven't ran the tests, but I'll check it out and give you a heads up later today.

[tasti]

How do I run the tests on Android Studio?

Running it as an Android Test results in Empty test suite, and running it as a single JUnit test results in Error running PixTest: Class 'com.googlecode.leptonica.android.test.PixTest' not found in module 'tess-two-test'

[rmtheis]

You can run the tests on the command line:

curl -O https://tesseract-ocr.googlecode.com/files/tesseract-ocr-3.02.eng.tar.gz
tar xvf tesseract-ocr-3.02.eng.tar.gz
adb shell mkdir mnt/sdcard/tesseract
adb shell mkdir mnt/sdcard/tesseract/tessdata
adb push tesseract-ocr mnt/sdcard/tesseract
adb install tess-two-test/bin/tess-two-test.apk
adb shell am instrument -w -e package com.googlecode.tesseract.android.test \
com.googlecode.tesseract.android.test/android.test.InstrumentationTestRunner

[rmtheis]

The error also occurs on an emulator when running the unit tests:

com.googlecode.tesseract.android.test.TessBaseAPITest:
Error in testGetUTF8Text:
java.lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol "__sfp" referenced by "liblept.so"...
        at java.lang.Runtime.loadLibrary(Runtime.java:364)
        at java.lang.System.loadLibrary(System.java:610)
        at com.googlecode.tesseract.android.TessBaseAPI.<clinit>(TessBaseAPI.java:44)
        at com.googlecode.tesseract.android.test.TessBaseAPITest.testGetUTF8Text(TessBaseAPITest.java:101)
        at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191)
        at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176)
        at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:555)
        at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1763)

Error in testInit:
java.lang.UnsatisfiedLinkError: com.googlecode.tesseract.android.TessBaseAPI
        at com.googlecode.tesseract.android.test.TessBaseAPITest.testInit(TessBaseAPITest.java:49)
        at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191)
        at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176)
        at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:555)
        at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1763)

Error in testSetImage:
java.lang.UnsatisfiedLinkError: com.googlecode.tesseract.android.TessBaseAPI
        at com.googlecode.tesseract.android.test.TessBaseAPITest.testSetImage(TessBaseAPITest.java:63)
        at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191)
        at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176)
        at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:555)
        at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1763)

Test results for InstrumentationTestRunner=.E.E.E
Time: 0.217

FAILURES!!!
Tests run: 3,  Failures: 0,  Errors: 3

[tasti]

Confirmed, works on Android L. Thanks!