[FFmpeg-user] trouble with ffmpeg build script execution

[sidharth]

hello community.
Dear sir/madam,
      A very thanks and appreciation for such great thing you have 
developed. I am trying to build ffmpeg from last few days but 
unfortunately am unable to do. i am following this tutorial 
"https://www.packtpub.com/sites/default/files/downloads/Developing_Multimedia_Applications_with_NDK.pdf" 
but always when its come to execute build_android.sh its showing me 
following lines .I am following this tutorial up to the point correctly 
and also have tried so many other solutions but the problem is the still 
same.

at terminal following is the log..
and i am using  ubantu 14.04LTS

igniva-andriod-05 at ignivaandriod05:~/Android/Sdk/ndk_bundle/sources/ffmpeg-2.8.2$ 
cd /home/igniva-andriod-05/Android/Sdk/ndk_bundle/sources/ffmpeg-2.8.2/
igniva-andriod-05 at ignivaandriod05:~/Android/Sdk/ndk_bundle/sources/ffmpeg-2.8.2$ 
chmod +x build_android.sh
igniva-andriod-05 at ignivaandriod05:~/Android/Sdk/ndk_bundle/sources/ffmpeg-2.8.2$ 
./build_android.sh
./build_android.sh: line 1: #!/bin/bash: No such file or directory
./build_android.sh: line 5: linux-x86: command not found
./configure: line 1: #!/bin/sh: No such file or directory
/home/Android/Sdk/ndk_bundle/toolchains/arm-linux-androideabi-4.8/prebuilt//bin/arm-linux-androideabi-gcc 
is unable to create an executable file.
C compiler test failed.

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user at ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "config.log" produced by configure as this will help
solve the problem.
Makefile:2: config.mak: No such file or directory
Makefile:62: /common.mak: No such file or directory
Makefile:104: /libavutil/Makefile: No such file or directory
Makefile:104: /library.mak: No such file or directory
Makefile:106: /doc/Makefile: No such file or directory
Makefile:189: /tests/Makefile: No such file or directory
make: *** No rule to make target `/tests/Makefile'.  Stop.
Makefile:2: config.mak: No such file or directory
Makefile:62: /common.mak: No such file or directory
Makefile:104: /libavutil/Makefile: No such file or directory
Makefile:104: /library.mak: No such file or directory
Makefile:106: /doc/Makefile: No such file or directory
Makefile:189: /tests/Makefile: No such file or directory
make: *** No rule to make target `/tests/Makefile'.  Stop.
Makefile:2: config.mak: No such file or directory
Makefile:62: /common.mak: No such file or directory
Makefile:104: /libavutil/Makefile: No such file or directory
Makefile:104: /library.mak: No such file or directory
Makefile:106: /doc/Makefile: No such file or directory
Makefile:189: /tests/Makefile: No such file or directory
make: *** No rule to make target `/tests/Makefile'.  Stop.
igniva-andriod-05 at ignivaandriod05:~/Android/Sdk/ndk_bundle/sources/ffmpeg-2.8.2$ 

..

Can you please help me in finding the exact issue i am stucked 
at...greatfull to you and many thanks in advance.
regards.
siddharth.