Building for android gives an error.

[TheIstere .]

Hello.

I am trying to build libreoffice for android.
Can someone help me to fix the following error?

...
[MAK] CustomTarget/android/source/done
creating liboSettings.gradle
[build PY ] native-code.cxx
/bin/sh: 1: /home/lexboss/Projects/libreoffice/solenv/bin/native-code.py:
not found
Makefile:15: recipe for target 'native-code.cxx' failed
make[2]: *** [native-code.cxx] Error 127
/home/lexboss/Projects/libreoffice/android/CustomTarget_lo_android.mk:17:
recipe for target
'/home/lexboss/Projects/libreoffice/workdir/CustomTarget/android/source/done'
failed
make[1]: ***
[/home/lexboss/Projects/libreoffice/workdir/CustomTarget/android/source/done]
Error 2
Makefile:282: recipe for target 'build' failed
make: *** [build] Error 2

I am on Ubuntu 18.04.2 LTS
My autogen.input is:
--with-distro=LibreOfficeAndroid
--with-android-sdk=/home/lexboss/Android/Sdk
--with-android-ndk=/home/lexboss/Android/android-ndk-r20
--with-jdk-home=/usr/lib/jvm/java-8-openjdk-amd64
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