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not appel to build the ndk-build

I been trying for while to to build NDK by cygwin however is always giving me this message and i don't know what am i messing

 

 

$ ndk-builddirname: extra operand `Files/Android/android-ndk-r8b-windows/android-ndk-r8b/ndk-build'Try `dirname --help' for more information.ERROR: You are using a non-Cygwin compatible Make program.Currently using: C:/cygwin/bin/makeTo solve the issue, follow these steps:1. Ensure that the Cygwin 'make' package is installed.   NOTE: You will need GNU Make 3.81 or later!2. Define the GNUMAKE environment variable to point to it, as in:     export GNUMAKE=/usr/bin/make3. Call 'ndk-build' again.

I'm sure from the packege is the same as the one given in the guid 3.82-2 , however my NDK is version 8b as i can't get link for r7 .

so guys dose any one know what is the problem ? thanks alot