How to uninstall pre-installed previous version and install new

[Raghunath Lolur]

Yes, the same holds for LD_LIBRARY_PATH also.

In fact, a program/library will be searched in the order of sequence
of path specified from left to right in its corresponding environment
variable.


Regards,
Raghunath Lolur.

On Wed, Aug 6, 2014 at 6:21 PM, Syed Ahsan Ali Bokhari
<ahsan.pmd@gmail.com> wrote:
> Thank you Kyrill. Now the new path is being read. Does the same hold
> for LD_LIBRARY_PATH?
>
> On Wed, Aug 6, 2014 at 3:23 PM, Kyrill Tkachov <kyrylo.tkachov@arm.com> wrote:
>>
>> On 06/08/14 11:11, Syed Ahsan Ali Bokhari wrote:
>>>
>>> I have set following paths in .bashrc to correspond to the latest
>>> installation of gcc
>>> export PATH=$PATH:/opt/gcc-4.9.1/bin
>>> export
>>> LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/gcc-4.9.1/lib:/opt/gcc-4.9.1/lib64
>>>
>>> but still on run time the previous binaries/libraries are being found
>>>
>>> [rcm@rcm ~]$ which gcc
>>> /usr/bin/gcc
>>>
>>> How to handle this?
>>
>>
>> PATH is usually read left to right, so you'd want to add your new path to
>> the beginning like so:
>>
>> export PATH=/opt/gcc-4.9.1/bin:$PATH
>>
>> Kyrill
>>
>>
>>
>>> On Wed, Aug 6, 2014 at 8:16 AM, Syed Ahsan Ali Bokhari
>>> <ahsan.pmd@gmail.com> wrote:
>>>>
>>>> Well explained Jonathan
>>>> Thanks
>>>>
>>>> On Tue, Aug 5, 2014 at 10:10 PM, Jonathan Wakely <jwakely.gcc@gmail.com>
>>>> wrote:
>>>>>
>>>>> On 5 August 2014 17:54, Syed Ahsan Ali Bokhari wrote:
>>>>>>
>>>>>> Yes I did that before, I removed the gcc and when I tried to build a
>>>>>> new gcc from source it crashed complaining that no C compiler is
>>>>>> present. Isn't it weird that installation of C compiler needs C
>>>>>> compiler as a pre-requisite.?
>>>>>
>>>>> You don't need a compiler to install a C compiler, you need a compiler
>>>>> to *compile* a C compiler, just like you need a compiler to compile
>>>>> any program.
>>>>>
>>>>> If you just want to install gcc you use 'yum' or 'rpm' to do that,
>>>>> instead of compiling it yourself.
>>>>>
>>>>> If you want to compile gcc, obviously you need a compiler of some kind.
>>>>>
>>>>> It might seem weird but it's not, it's quite normal.
>>>>> http://en.wikipedia.org/wiki/Bootstrapping_%28compilers%29
>>>>
>>>>
>>>>
>>>> --
>>>>   Syed Ahsan Ali Bokhari
>>>>   Electronic Engineer
>>>>   Research & Development Division
>>>>   Pakistan Meteorological Department H-8/2, Islamabad.
>>>>   Phone # off +92519250361
>>>>   Cell # +923155145014
>>>>   Fax # +92519250368
>>>>   www.pmd.gov.pk
>>>
>>>
>>>
>>
>>
>
>
>
> --
>  Syed Ahsan Ali Bokhari
>  Electronic Engineer
>  Research & Development Division
>  Pakistan Meteorological Department H-8/2, Islamabad.
>  Phone # off +92519250361
>  Cell # +923155145014
>  Fax # +92519250368
>  www.pmd.gov.pk