Every NDK build is a full rebuild [duplicate]

Question

Possible Duplicate:
Prevent ndk-build from automatically cleaning module

Android project with an NDK library. NDK r8c. Compiling under Cygwin (it's an old project).

A bunch of C++ and C files, and some .a libraries linked via LOCAL_LDLIBS.

Since some time ago, I'm noticing that every NDK build goes over all source files. Even if I call the ndk-build twice in a row, there's a full rebuild on second try. There's nothing to the effect in the .mk files that I can see, and the command I invoke to build is a vanilla $NDKPATH/ndk-build. There's no -B option anywhere.

The only wrinkle is this: on every build, NDK says the following:

/cygdrive/c/android-ndk-r8c/build/core/add-application.mk:128: Android NDK: WARNING:
APP_PLATFORM android-9 is larger than android:minSdkVersion 3 in
/cygdrive/d/AppPath/AndroidManifest.xml

What's going on, please? Can I somehow see based on what file dates is make making a decision to rebuild it all?

Answer 1

There is a known bug in r8c that causes full rebuilds even without any source code changes. See this bug report.

The suggested fix (not mine) is to change line 289 of build/core/definitions.mk from

$1: $$(__ndk_file_dir)

to

$1: | $$(__ndk_file_dir)