On Mon, Jun 16, 2008 at 10:38 AM, Barry Andrews [EMAIL PROTECTED] wrote:
http://www.redhat.com/rhel/server/details/#compatibility
So, I'm thinking this is not the full story because I also found this,
http://www.redhat.com/f/pdf/rhel/rhel5_whatsnew.pdf
I think there was a parsing part on your part when reading that (no
biggie.. it happens to everyone all the time). There is a HUGE
difference between:
Red Hat Enterprise Linux 5 includes compatibility libraries that
enable applications built on the versions 3 and 4 to run without
recompilation.
and
EL5 claims to be fully compatible with binaries that were built on EL4 and 3.
Fully compatible means that every library and binary would have a
'-compat' from previous versions. What EL-5 has is a subset of
commonly used compatibility libraries.
To answer your second question, Red Hat enterprise does not ship the
same version of perl in 3,4,5:
RHEL-3: perl-5.8.0-98.EL3
RHEL-4: perl-5.8.5-36.el4_6.3
RHEL-5: perl-5.8.8-10.el5_2.3
That would explain part fo the differences between library sizes and versions.
and it also talks about compatibility ( under the GCC 4.1 Compiler section
).
...enable applications that were previously certified on the versions 3 and
4...
Maybe the keyword here is certified
thanks,
Barry
On Mon, Jun 16, 2008 at 12:02 PM, Jos Vos [EMAIL PROTECTED] wrote:
On Mon, Jun 16, 2008 at 11:53:34AM -0400, Barry Andrews wrote:
EL5 claims to be fully compatible with binaries that were built on EL4
and
3.
Where is that claimed? I think this technically can't be true (at least
not in the generic way you put it here), as libraries are upgraded etc.
For applications only using glibc etc., for which there also exist
compatibility libraries and such, it can be true.
--
--Jos Vos [EMAIL PROTECTED]
--X/OS Experts in Open Systems BV | Phone: +31 20 6938364
--Amsterdam, The Netherlands| Fax: +31 20 6948204
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