Re: How to uninstall pre-installed previous version and install new

[Syed Ahsan Ali Bokhari <ahsan.pmd@gmail.com>]

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?

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