Error with building Android NDK Project

Question

I wand build project in windows, I get same Errors:

 bash C:\linux\android-ndk1\ndk-build V=1 
 cygwin warning:
 MS-DOS style path detected: C:\dev\android\workspace4_android\FFWall
 Preferred POSIX equivalent is: /cygdrive/c/dev/android/workspace4_android/FFWall
 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
 Android NDK: ERROR:jni/Android.mk:bambuser-libavcore: LOCAL_SRC_FILES points to a missing file 
 /cygdrive/c/linux/android-ndk1/build/core/prebuilt-library.mk:43: *** Android NDK: Aborting . Stop.
 Android NDK: Check that jni/ffmpeg-android/build/ffmpeg/armeabi/lib/libavcore.so exists or that its path is correct 

Another way building:

C:\art\android-ndk\ndk-build V=1 
Cannot run program "C:\art\android-ndk\ndk-build": Launching failed
Error: Program "C:/art/android-ndk/ndk-build" is not found in PATH
PATH=[C:\Art\android-ndk;C:/Program Files/Java/jre7/bin/client;C:/Program Files/Java/jre7/bin;C:/Program Files/Java/jre7/lib/i386;C:\Program Files\PC Connectivity Solution\;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\MATLAB\R2011a\runtime\win32;C:\Program Files\MATLAB\R2011a\bin;C:\Program Files\MATLAB\R2007b\bin;C:\Program Files\MATLAB\R2007b\bin\win3;C:\dev\android\android-sdk-windows\tools;C:\cygwin\bin;C:/art/android-ndk/;C:\linux\android-ndk-r7b;C:\dev\android\eclipse] 

Why this happened?

Answer 1

From: http://developer.android.com/sdk/ndk/overview.html#reqs

Required development tools

• For all development platforms, GNU Make 3.81 or later is required. Earlier versions of GNU Make might work but have not been tested.
• A recent version of awk (either GNU Awk or Nawk) is also required.
• For Windows, Cygwin 1.7 or higher is required. The NDK will not work with Cygwin 1.5 installations.

Meaning, that you will have to install Cygwin. After that you can call the ndk-build like:

$ProjectPath> /cygdrive/c/myNdkPath/ndk-build

Please also check the "Getting Started" part of:

http://developer.android.com/sdk/ndk/index.html