Finally, i solved it. Now after compilation, i am getting the correct 
version of leptonica and tesseract.

*Tesseract version 4.00.00alphaleptonica version leptonica-1.74*

I uninstalled libleptonica-dev and libtesseract-dev and again compiled. It 
ran with correct output.
Thanks everyone in this group :)

On Monday, 20 March 2017 17:58:13 UTC+6, zdenop wrote:
>
>
> On Mon, Mar 20, 2017 at 12:19 PM, Kazi Moinul Hossain <[email protected] 
> <javascript:>> wrote:
>
>> I uninstalled all the previous leptonica and tesseract, installed all the 
>> new stuffs. When i am typing tesseract -v, it is showing properly the 
>> leptonica and tesseract version. 
>> But When i am typing, tesseract sample.tif sample, it is showing 
>> "Illegeal instruction (core dumped)".
>> Ultimately, i became unable to compile the C++ program as mentioned here 
>> before.After compilation command, it is showing, "fatal error: baseapi.h: 
>> No such file or directory"
>> What could be the soultion? Please help
>>
>
> IMO there is only one solution if you want to start programming - take 
> some course and learn something about your OS and programming - if you are 
> not able to handle error  like "fatal error: baseapi.h: No such file or 
> directory" by yourself, you are in troubles.
>
> If are serious about programming you should also learn how to debug 
> program e.g. find where (and maybe why) there is " illegal instruction(core 
> dumped)".
>
> Unless your tesseract installation is not working properly (at least with 
> images in test folder) do not even think about trying your compile own 
> program. There could be several reason for it, but you do not provide 
> details, so it is no possibility to guide you.
>
>
> On Friday, 17 March 2017 19:41:20 UTC+6, shree wrote:
>>>
>>> sudo apt-get remove libleptonica-dev libleptonica
>>>
>>>
>>> ShreeDevi
>>> ____________________________________________________________
>>> भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
>>>
>>> On Fri, Mar 17, 2017 at 7:09 PM, ShreeDevi Kumar <[email protected]> 
>>> wrote:
>>>
>>>> try 
>>>>
>>>> sudo apt-get remove libleptonica-dev
>>>>
>>>> ShreeDevi
>>>> ____________________________________________________________
>>>> भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
>>>>
>>>> On Fri, Mar 17, 2017 at 6:06 PM, Kazi Moinul Hossain <
>>>> [email protected]> wrote:
>>>>
>>>>> how can i uninstall old leptonica fully? I am attempting with "sudo 
>>>>> apt-get autoremove leptonica" and it is showing "unable to locate package"
>>>>>
>>>>> On Friday, 17 March 2017 17:56:13 UTC+6, shree wrote:
>>>>>
>>>>>> I use the following batch files in the folders where I have cloned 
>>>>>> tesseract and leptonica.
>>>>>>
>>>>>> 1. leptonica
>>>>>>
>>>>>> #!/bin/bash
>>>>>> git pull origin
>>>>>> ./autobuild
>>>>>> #./configure --disable-dependency-tracking 
>>>>>> ./configure
>>>>>> make
>>>>>> sudo make install
>>>>>> sudo ldconfig
>>>>>> cd prog
>>>>>> make
>>>>>> cd ..
>>>>>>
>>>>>> 2. tesseract
>>>>>>
>>>>>> #!/bin/bash
>>>>>> ./autogen.sh
>>>>>> ./configure 
>>>>>> LDFLAGS="-L/usr/local/lib" CFLAGS="-I/usr/local/include" make
>>>>>> sudo make install
>>>>>> sudo ldconfig
>>>>>> make training
>>>>>> sudo make training-install
>>>>>>
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