"Couldn't load python3.5m: findLibrary returned null" on older versions of Android #866

kmonson · 2016-08-15T02:13:37Z

When I try to run my APK on older versions of Android (<4.x) I'm getting a crash with this error: "Couldn't load python3.5m: findLibrary returned null"

I'm using the new python-for-android toolchain checked out a few days ago.

I get a popup on the device that says it's an "SDL Error"

logcat: http://pastebin.com/A0EJ8dQG
buildozer: http://pastebin.com/WCbU96TM (I did add python2 to the list of requirements but it did not help)

I also changed the Kivy recipe to use stable as opposed to master. I didn't think that was the problem.

Tested on a Kindle Fire HD (3.x fails), LG Volt (4.4 fails, but for a different reason much later in the startup process after kivy started).

Uninstalling and reinstalling the app did not help.

It looks python-for-android/pythonforandroid/bootstraps/sdl2/build/src/org/kivy/android/PythonUtil.java in the function loadLibraries it is failing to find either python2.7 or python3.5m.

If this all sounds familiar it's a similar problem to #645. In fact before I updated p4a I was at revision 084ddec which @kived had just checked in to fix #645. I was able to build a working version of my app with that revision. After I pulled the latest revision (9d457e3) I immediately started seeing this problem.

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kmonson · 2016-08-20T19:05:07Z

I tried the same APK on my LG Volt (Android 4.4) and it works.

Fak3 · 2016-09-16T12:38:52Z

I have this problem too. App works on android 4.2.2 (JIAYU G2F), but fails on android 4.2.1 (ISA A19)

Fak3 · 2016-09-16T13:52:28Z

I added some extra logging to the /src/org/kivy/android/PythonUtil.java:

    for (String lib : getLibraries()) {
              try {
                System.loadLibrary(lib);
            } catch(UnsatisfiedLinkError e) {
                Log.v("Loading the library normally failed: %s", Log.getStackTraceString(e));
                throw e;
            }
        }

And got "cannot locate 'getsid'":

V/python  (19087): extracting include/python2.7/pyconfig.h
V/PythonActivity(19087): About to do super onCreate
D/dalvikvm(19087): Trying to load lib /data/data/org.spbelect.paradox/lib/libSDL2.so 0x41af47e0
D/dalvikvm(19087): Added shared lib /data/data/org.spbelect.paradox/lib/libSDL2.so 0x41af47e0
D/dalvikvm(19087): Trying to load lib /data/data/org.spbelect.paradox/lib/libSDL2_image.so 0x41af47e0
D/dalvikvm(19087): Added shared lib /data/data/org.spbelect.paradox/lib/libSDL2_image.so 0x41af47e0
D/dalvikvm(19087): No JNI_OnLoad found in /data/data/org.spbelect.paradox/lib/libSDL2_image.so 0x41af47e0, skipping init
D/dalvikvm(19087): Trying to load lib /data/data/org.spbelect.paradox/lib/libSDL2_mixer.so 0x41af47e0
D/dalvikvm(19087): Added shared lib /data/data/org.spbelect.paradox/lib/libSDL2_mixer.so 0x41af47e0
D/dalvikvm(19087): No JNI_OnLoad found in /data/data/org.spbelect.paradox/lib/libSDL2_mixer.so 0x41af47e0, skipping init
D/dalvikvm(19087): Trying to load lib /data/data/org.spbelect.paradox/lib/libSDL2_ttf.so 0x41af47e0
D/dalvikvm(19087): Added shared lib /data/data/org.spbelect.paradox/lib/libSDL2_ttf.so 0x41af47e0
D/dalvikvm(19087): No JNI_OnLoad found in /data/data/org.spbelect.paradox/lib/libSDL2_ttf.so 0x41af47e0, skipping init
D/dalvikvm(19087): Trying to load lib /data/data/org.spbelect.paradox/lib/libpython2.7.so 0x41af47e0
W/System.err(19087): Cannot load library: reloc_library[1322]:   103 cannot locate 'getsid'...

Fak3 · 2016-09-16T14:12:26Z

My suspicion is that older android versions did not implement getsid(). Maybe building python with -DHAVE_GETSID=0 cflag will wix it. I don't have much time to do this now unfortunately.

inclement · 2016-09-16T18:02:44Z

Thanks for this interesting debugging information. I don't have versions of android to easily test it so it would be great if you're able to check that flag (although if necessary I guess it can be checked using emulators).

ecdsa · 2016-10-03T10:22:12Z

I confirm this, on android 2.3.3

ecdsa · 2016-10-04T08:05:54Z

If this does not get fixed, I think buildozer should increase the minimum version of android required when it creates the APK

…lier devices) closes #866

rnixx · 2016-12-09T13:10:43Z

@Fak3 -DHAVE_GETSID=0 did not help (Android 4.2.1)

pat1 · 2017-04-27T17:35:19Z

I use a Samsumg GT-I9070 android 4.1.2 and today git for buildozer and python-for-android
in buildozer.spec:

android.api = 19
android.minapi = 13
android.sdk = 24
android.ndk = 10e

and rin the command:
buildozer android_new debug deploy run
with python 2

In PythonUtil.java I have commented out the code about catch(UnsatisfiedLinkError e)
and I get error loading libsqlite3.so
So I have added in getLibraries()

	    "crypto1.0.2h",
	    "ssl1.0.2h",
	    "sqlite3",
before    
            "python2.7",

now I get this error:

D/dalvikvm( 8099): Trying to load lib /mnt/asec/org.test.rmap-2/lib/libSDL2.so 0x41d88a50
D/dalvikvm( 8099): Added shared lib /mnt/asec/org.test.rmap-2/lib/libSDL2.so 0x41d88a50
D/dalvikvm( 8099): Trying to load lib /mnt/asec/org.test.rmap-2/lib/libSDL2_image.so 0x41d88a50
D/dalvikvm( 8099): Added shared lib /mnt/asec/org.test.rmap-2/lib/libSDL2_image.so 0x41d88a50
D/dalvikvm( 8099): No JNI_OnLoad found in /mnt/asec/org.test.rmap-2/lib/libSDL2_image.so 0x41d88a50, skipping init
D/dalvikvm( 8099): Trying to load lib /mnt/asec/org.test.rmap-2/lib/libSDL2_mixer.so 0x41d88a50
D/dalvikvm( 8099): Added shared lib /mnt/asec/org.test.rmap-2/lib/libSDL2_mixer.so 0x41d88a50
D/dalvikvm( 8099): No JNI_OnLoad found in /mnt/asec/org.test.rmap-2/lib/libSDL2_mixer.so 0x41d88a50, skipping init
D/dalvikvm( 8099): Trying to load lib /mnt/asec/org.test.rmap-2/lib/libSDL2_ttf.so 0x41d88a50
D/dalvikvm( 8099): Added shared lib /mnt/asec/org.test.rmap-2/lib/libSDL2_ttf.so 0x41d88a50
D/dalvikvm( 8099): No JNI_OnLoad found in /mnt/asec/org.test.rmap-2/lib/libSDL2_ttf.so 0x41d88a50, skipping init
D/dalvikvm( 8099): Trying to load lib /mnt/asec/org.test.rmap-2/lib/libcrypto1.0.2h.so 0x41d88a50
D/dalvikvm( 8099): Added shared lib /mnt/asec/org.test.rmap-2/lib/libcrypto1.0.2h.so 0x41d88a50
D/dalvikvm( 8099): No JNI_OnLoad found in /mnt/asec/org.test.rmap-2/lib/libcrypto1.0.2h.so 0x41d88a50, skipping init
D/dalvikvm( 8099): Trying to load lib /mnt/asec/org.test.rmap-2/lib/libssl1.0.2h.so 0x41d88a50
D/dalvikvm( 8099): Added shared lib /mnt/asec/org.test.rmap-2/lib/libssl1.0.2h.so 0x41d88a50
D/dalvikvm( 8099): No JNI_OnLoad found in /mnt/asec/org.test.rmap-2/lib/libssl1.0.2h.so 0x41d88a50, skipping init
D/dalvikvm( 8099): Trying to load lib /mnt/asec/org.test.rmap-2/lib/libsqlite3.so 0x41d88a50
D/dalvikvm( 8099): Added shared lib /mnt/asec/org.test.rmap-2/lib/libsqlite3.so 0x41d88a50
D/dalvikvm( 8099): No JNI_OnLoad found in /mnt/asec/org.test.rmap-2/lib/libsqlite3.so 0x41d88a50, skipping init
D/dalvikvm( 8099): Trying to load lib /mnt/asec/org.test.rmap-2/lib/libpython2.7.so 0x41d88a50
W/System.err( 8099): Cannot load library: reloc_library[1306]:  1703 cannot locate 'wait4'...
W/ResourceType( 8099): Failure getting entry for 0x010802c8 (t=7 e=712) in package 0 (error -75)

What about 'wait4' ?

pat1 · 2017-04-27T22:38:51Z

kivy/buildozer#92

…lier devices) closes kivy#866

ecdsa mentioned this issue Oct 4, 2016

SDL error couldn't load python3.5m on Android app spesmilo/electrum#1947

Closed

akshayaurora added a commit that referenced this issue Oct 9, 2016

load ssl and crypto libs before loading python, for (4.1.2 or ear…

c1659b8

…lier devices) closes #866

akshayaurora mentioned this issue Oct 10, 2016

load ssl and crypto libs before loading python, for (4.1.2 or ear… #903

Closed

mrhdias mentioned this issue Nov 23, 2016

My app crashed by raising error about Python3.5m, but i made apk by python2.7..!!! #933

Closed

pat1 pushed a commit to r-map/python-for-android that referenced this issue Feb 20, 2017

patch from kivy#866

85bade2

pat1 added a commit to r-map/python-for-android that referenced this issue Apr 28, 2017

see at kivy#866

ad68f05

inclement pushed a commit to inclement/python-for-android that referenced this issue Aug 31, 2017

load ssl and crypto libs before loading python, for (4.1.2 or ear…

1a42ce1

…lier devices) closes kivy#866

inclement mentioned this issue Sep 1, 2017

Fixed ssl, sqlite and crystax library loads on Android versions before ~4.4 #1106

Merged

inclement closed this as completed in #1106 Sep 23, 2017

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"Couldn't load python3.5m: findLibrary returned null" on older versions of Android #866

"Couldn't load python3.5m: findLibrary returned null" on older versions of Android #866

kmonson commented Aug 15, 2016 •

edited by tito

kmonson commented Aug 20, 2016

Fak3 commented Sep 16, 2016

Fak3 commented Sep 16, 2016

Fak3 commented Sep 16, 2016

inclement commented Sep 16, 2016

ecdsa commented Oct 3, 2016

ecdsa commented Oct 4, 2016

rnixx commented Dec 9, 2016

pat1 commented Apr 27, 2017

pat1 commented Apr 27, 2017

"Couldn't load python3.5m: findLibrary returned null" on older versions of Android #866

"Couldn't load python3.5m: findLibrary returned null" on older versions of Android #866

Comments

kmonson commented Aug 15, 2016 • edited by tito

kmonson commented Aug 20, 2016

Fak3 commented Sep 16, 2016

Fak3 commented Sep 16, 2016

Fak3 commented Sep 16, 2016

inclement commented Sep 16, 2016

ecdsa commented Oct 3, 2016

ecdsa commented Oct 4, 2016

rnixx commented Dec 9, 2016

pat1 commented Apr 27, 2017

pat1 commented Apr 27, 2017

kmonson commented Aug 15, 2016 •

edited by tito