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Re: How to uninstall pre-installed previous version and install new
- From: Syed Ahsan Ali Bokhari <ahsan dot pmd at gmail dot com>
- To: Jonathan Wakely <jwakely dot gcc at gmail dot com>
- Cc: Ãngel GonzÃlez <keisial at gmail dot com>, gcc-help <gcc-help at gcc dot gnu dot org>
- Date: Wed, 6 Aug 2014 15:11:00 +0500
- Subject: Re: How to uninstall pre-installed previous version and install new
- Authentication-results: sourceware.org; auth=none
- References: <CAOjP03VxDgEAwMGHZoTbGiKbZgE+eNAsOz7rGt9jbFKS=36_og at mail dot gmail dot com> <CAH6eHdQdE=VNB0G1u_bFkC6_8cE34=idAB3jegSVZ4+7EamaaQ at mail dot gmail dot com> <53E0A4B6 dot 1090007 at gmail dot com> <CAOjP03X4u8Q8eDzarSXL6ebxR3ZxZJ2B3aS2vFenomQ1Ddop-g at mail dot gmail dot com> <CAH6eHdRRxKCit_3wJ31CtZU0GhLTi-StbwMoQy-oa4txPZyYNA at mail dot gmail dot com> <CAOjP03WdV9Km2Y6aRscTJjxSuf4eSt3b12V0ftF_wTT7oyW80g at mail dot gmail dot 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