HOW TO INSTALL DUAL VERSION GCC

dear all,

i need to have dual version of GCC in my Fedora-6 i386 PC, i use gcc 3.4 for making other cross-compiler., which i use it.

now i am in need of GCC 4.1.2 or latest to be installed in PC.., but i am worry on issuing

since this overwrite the existing gcc 3.4, which is to be preserved., help me on this.

Is there any way to inform the yum.. where to install the software (i mean what folder or installation path ... ),

Also in which directory they (yum or rpm)will install the software by default.

Also can you give small note on need of source RPM which i found in sites,

Much of Thanks in advance.

after tired on searching this topic, i posted to you all, sorry if it is duplicated again..

best regards,
nilathinesh

What is the output of:
# rpm -qa | grep gcc

FC6 comes with 2 compilers, one is packaged 'gcc' (version 4.1.1 I think) the other 'compat-gcc-34'. The second does not come automatically installed.
http://www.mjmwired.net/resources/mj...-fc6.html#gcc3

If you install run 'yum update gcc' this will update the 'gcc' package (from ver 4.1.1 to 4.1.2).
If you run 'yum update compat-gcc-34' this will update the 3.4 version of the compiler.

The fedora updates for FC6 have gcc-4.1.2-13.fc6

I do think you will lose your version 3.4 compiler since it is a different package.

As a test run 'yum update gcc' - DO NOT HIT 'YES'
Just let it run and it will tell you EXACTLY what it will replace or update, if everything looks good then you can hit yes, otherwise hit no and NOTHING will be altered.

if your distribution is not set up to provide multiple gcc and many are not you will have to install the other ones you need from source in --prefix=/opt/gccxxx or wherever and use the bootstrap call on the compile

i got the output as

libgcc-4.1.2-13.fc6
gcc-4.1.2-13.fc6
compat-gcc-34-3.4.6-4

on issuing the command "# rpm -qa | grep gcc"

and thanks for your information and the link.. mjmwired, i issued the command

yum install gcc-4.1.2

and it installed the the gcc-4.1.2 in /usr/bin, also previously i installed the gcc3.4 manually myself without knowing about the default existence of compact gcc-34..

now i am able to use both without problem. thanks once again..

now, thanks studioj, for your information on installing from the source..

but can you please explain about the "use the bootstrap call on the compile", thanks again..


can you give answer for my other questions too..,

1) Is there any way to inform the yum.. where to install the software (i mean what folder or installation path ... )

2) need of RPM source..is it same as like normal source..!

again..

i found little on bootstrapping...

bootstrapping options "bootstrap" or "bootstrap-lean"

These will compile the compiler, then recompile it twice with itself. This means that the compiler will get the benefit of its optimisation, and will also provide some degree of testing.

thanks