Unable to build using instructions in README.md

[FabianFrank]

I have ANDROID_HOME and ANDROID_NDK_ROOT set correctly. make init succeeds without errors or warnings. However, make fails with the following error:

make[1]: Leaving directory `XXX/android-database-sqlcipher/jni'
ant release && \
    cd XXX/android-database-sqlcipher/bin/classes && \
    jar -cvf sqlcipher.jar .
Buildfile: build.xml does not exist!
Build failed

Using your provided binaries is not a solution, as they contain dependencies like Guava, making them a dealbreaker. Also the issues with DART due to JNI signatures make it look like I will have to build myself in any case to fix these locally (will send PR).

[FabianFrank]

Turns out it was because I didn't have android-7 installed. The error message is very hard to see, since it's at the top of thousands of lines of output. It would be nice to clearly document the requirement and/or abort execution after this error.

[developernotes]

Hi @FabianFrank

We will update the README to include an additional reference to the Android environment configuration for those building from source. Thanks!

[FabianFrank]

Thank you for doing this. 👍

[timolehto]

Thanks for this info.