Clearly Scope and Specify What SDK, NDK and API Versions Are Supported by Makefile-Android

[gerickson]

At first glance, a developer might be led to believe that Makefile-Android supports any arbitrary version of NDK, SDK, and API.

However, such is not the case. Makefile-Android and/or supporting documentation should clearly specify what NDK, SDK, and API versions are supported.

[gerickson]

/cc/ @robszewczyk

[gerickson]

With checkout c1e02de, I ran a somewhat old version of the NDK with:

% make -f Makefile-Android ANDROID_HOME=/usr/local/android/android-sdk-macosx ANDROID_NDK_HOME=/usr/local/android/android-ndk-r10 JAVA_HOME=/usr ANDROID_API=13

which fails with some C++11 issues.

[gerickson]

With checkout 50e179b, and NDK r12b, I was able to get a little farther with:

% make -f Makefile-Android ANDROID_HOME=/usr/local/android/android-sdk-macosx ANDROID_NDK_HOME=/usr/local/android/android-ndk-r12b JAVA_HOME=/usr

where I then run into an issue about :

  CXX      ../../src/inet/libInetLayer_a-InetFaultInjection.o
In file included from /Users/gerickson/Source/github.com/openweave/openweave-core/src/inet/../../src/inet/InetLayer.cpp:69:0:
/Users/gerickson/Source/github.com/openweave/openweave-core/third_party/android/platform-libcore/android-platform-libcore/luni/src/main/native/ifaddrs-android.h:21:19: fatal error: cstring: No such file or directory
 #include <cstring>
                   ^
compilation terminated.
make[4]: *** [Makefile:895: ../../src/inet/libInetLayer_a-InetLayer.o] Error 1
make[4]: *** Waiting for unfinished jobs….

[gerickson]

With checkout 50e179b, and NDK r16b, I was able to get a little farther with:

% make -f Makefile-Android ANDROID_HOME=/usr/local/android/android-sdk-macosx ANDROID_NDK_HOME=/usr/local/android/android-ndk-r12b JAVA_HOME=/usr

where I then run into an issue Java, which is more about macOS than Android:

Making all in device-manager/java
  CXX      libWeaveDeviceManager_la-WeaveDeviceManager-JNI.lo
  CXX      libWeaveDeviceManager_la-PairingCodeUtils-JNI.lo
  CXX      libWeaveDeviceManager_la-AndroidBleApplicationDelegate.lo
  CXX      libWeaveDeviceManager_la-AndroidBlePlatformDelegate.lo
  MKDIR         bin
  JAVAC   
Unable to find a $JAVA_HOME at "/usr", continuing with system-provided Java...
warning: [options] bootstrap class path not set in conjunction with -source 6
warning: [options] source value 6 is obsolete and will be removed in a future release
warning: [options] target value 1.6 is obsolete and will be removed in a future release
warning: [options] To suppress warnings about obsolete options, use -Xlint:-options.

So, it would seem NDKr16b is good.