Buildozer doesn't work with java under cygwin

Question

I'm trying to buildozer android debug deploy in my cygwin environment. So far it worked quite well, but upon trying to build, I run into the following error:

$ buildozer android debug deploy
# Check configuration tokens
# Ensure build layout
# Check configuration tokens
# Preparing build
# Check requirements for android
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/buildozer-0.15_dev-py2.7.egg/buildozer/targets/android.py", line 92, in check_requirements
self._set_win32_java_home()
File "/usr/lib/python2.7/site-packages/buildozer-0.15_dev-py2.7.egg/buildozer/targets/android.py", line 186, in _set_win32_java_home
    import _winreg
ImportError: No module named _winreg
# Install platform
# Apache ANT found at /home/Data/.buildozer/android/platform/apache-ant-1.8.4
# Android SDK found at /home/Data/.buildozer/android/platform/android-sdk-21
# Android NDK found at /home/Data/.buildozer/android/platform/android-ndk-r9c

ERROR: No suitable Java found. In order to properly use the Android Developer
Tools, you need a suitable version of Java JDK installed on your system.
We recommend that you install the JDK version of JavaSE, available here:
  http://www.oracle.com/technetwork/java/javase/downloads

You can find the complete Android SDK requirements here:
  http://developer.android.com/sdk/requirements.html

# Android packages installation done.
# Check application requirements
# Check garden requirements
# Compile platform
# Command failed: ./distribute.sh -m "kivy" -d "first_kivy_test"

What is funny, is that if I do java -version in cygwin it returns

java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)

so cygwin does know java. What am I missing here?

EDIT: Ok, I've tried to do the following in the android.py file of buildozer on line 92:

import cygwinreg as _winreg

But that just gave me the following error instead of the _winreg not recognized:

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/buildozer-0.15_dev-py2.7.egg/buildozer/targets/android.py", line 92, in check_requirements
self._set_win32_java_home()
  File "/usr/lib/python2.7/site-packages/buildozer-0.15_dev-py2.7.egg/buildozer/targets/android.py", line 191, in _set_win32_java_home
self.buildozer.environ['JAVA_HOME'] = java_home
  File "/usr/lib/python2.7/site-packages/cygwinreg-1.0-py2.7.egg/cygwinreg/__init__.py", line 146, in __exit__
self.Close()
NameError: global name 'self' is not defined

EDIT2:

I've managed to angle to this error:

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/buildozer-0.15_dev-py2.7.egg/buildozer/targets/android.py", line 92, in check_requirements
    self._set_win32_java_home()
  File "/usr/lib/python2.7/site-packages/buildozer-0.15_dev-py2.7.egg/buildozer/targets/android.py", line 187, in _set_win32_java_home
with _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE, r"SOFTWARE\JavaSoft\Java Development Kit") as jdk: #@UndefinedVariable
AttributeError: __exit__

EDIT 3:

I've already set the environment variable JAVA_HOME to my SDK path, so that cannot be the problem. I think it's a problem of winreg not being able to properly import that path.

EDIT 4: Through the help of a nice guy called Gavin Bravery I'm now no longer getting other errors than the java error. Current output on trying to

buildozer android debug deploy

is

# Check configuration tokens
# Ensure build layout
# Check configuration tokens
# Preparing build
# Check requirements for android
cygwin warning:
  MS-DOS style path detected: C:\Program Files (x86)\Java\jdk1.7.0_10/bin/javac.exe
  Preferred POSIX equivalent is: /cygdrive/c/Program Files     (x86)/Java/jdk1.7.0_10/bin/javac.exe
  CYGWIN environment variable option "nodosfilewarning" turns off this warning.
  Consult the user's guide for more details about POSIX paths:
    http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
# Install platform
# Apache ANT found at /home/Data/.buildozer/android/platform/apache-ant-1.8.4
# Android SDK found at /home/Data/.buildozer/android/platform/android-sdk-21
# Android NDK found at /home/Data/.buildozer/android/platform/android-ndk-r9c

ERROR: No suitable Java found. In order to properly use the Android Developer
Tools, you need a suitable version of Java JDK installed on your system.
We recommend that you install the JDK version of JavaSE, available here:
  http://www.oracle.com/technetwork/java/javase/downloads

You can find the complete Android SDK requirements here:
  http://developer.android.com/sdk/requirements.html


# Android packages installation done.
# Check application requirements
# Check garden requirements
# Compile platform
# Command failed: ./distribute.sh -m "kivy" -d "kivytest"

With a

export JAVA_HOME=$( cygpath "JAVA_HOME" )

I can circumvent the path warning, so its down to the "No suitable Java found." Error. Does anyone have an idea on that?

Answer 1

Which OS version are you trying to run this on? Occasionally cygwin shows strange behaviour on 32bit OS.