I think the title is pretty self explanatory :) Is it possible, under RHEL (v 5) to install 2 instances of the same packages with 32 bit support for one and 64 bits support for the other one?
Obviously, the running host has a 64 bit kernel and has the compatibility libraries required. (in this case, we would need a 64 bits JDK and a 32 bits one). If yes, are there any special rpm flag to use (change of installation directory for instance)?
Thanks in advance,
Yes.
Just install your x86_64 and your i386/i686 packages using the rpm command in the same manner as usual.
There are plenty of instances of mixed-architecture packages that need to coexist. Look at glibc or from one of my other systems... Note the two entries.
[root@LAX ~]# rpm -qi zlib
Name : zlib Relocations: (not relocatable)
Version : 1.2.3 Vendor: CentOS
Release : 27.el6 Build Date: Wed Dec 7 09:54:41 2011
Install Date: Fri Nov 30 12:50:28 2012 Build Host: c6b18n1.dev.centos.org
Group : System Environment/Libraries Source RPM: zlib-1.2.3-27.el6.src.rpm
Size : 152225 License: zlib and Boost
Signature : RSA/SHA1, Thu Dec 8 13:48:00 2011, Key ID 0946fca2c105b9de
Packager : CentOS BuildSystem <http://bugs.centos.org>
URL : http://www.gzip.org/zlib/
Summary : The zlib compression and decompression library
Description :
Zlib is a general-purpose, patent-free, lossless data compression
library which is used by many different programs.
Name : zlib Relocations: (not relocatable)
Version : 1.2.3 Vendor: CentOS
Release : 27.el6 Build Date: Wed Dec 7 09:51:15 2011
Install Date: Fri Nov 30 13:58:46 2012 Build Host: c6b18n1.dev.centos.org
Group : System Environment/Libraries Source RPM: zlib-1.2.3-27.el6.src.rpm
Size : 139037 License: zlib and Boost
Signature : RSA/SHA1, Thu Dec 8 13:47:42 2011, Key ID 0946fca2c105b9de
Packager : CentOS BuildSystem <http://bugs.centos.org>
URL : http://www.gzip.org/zlib/
Summary : The zlib compression and decompression library
Description :
Zlib is a general-purpose, patent-free, lossless data compression
library which is used by many different programs.
As said, you can use rpm command in the traditional way to get the work done. If you are installing by yum it would be a little different. Either you have to specify the 32 bit architecture package specifically like yum install <32_bit_package>.
Or you can edit the `/etc/yum.conf' file and put the line
multilib_policy=all
And it should be done. In numerous instances, I had to install 32 bit and 64 bit glibc or gcc packages and it works.
