Hi,
I'm installing several AMD 64bit machines, and I've also installed 32bit compatibility for legacy programs.
But unfortunately, I've found a "strange" phenomenon: a pair of same name packages, one is i386 version and another is x86_64 version, can be installed at the same time without confliction, although they contains the same set of files, either exectible binaries and libraries or simple documents.
Let's give an example (mysql) listed below, bith mysql.i386 and mysql.x86_64 includes /usr/bin/mysql/ but are installed without confliction.
Then I got confused here (not FC4 OS). :) If I just run 'mysql' from command line, which version (i386, x86_64) of mysql will be run? If I remove one version, say mysql.x86_64, then the file /usr/bin/mysql will get deleted? or it just downgrade to 32bit version only? If the latter is the case, then where does FC4 Linux save the 32bit version binary?
My questions seems pretty riduclous because I'm a newbie to 64bit world. Plaese help.
I will be very appreciated if someone can give me some reference sites about this 32bit|64bit rpm introduction.
[user02@testserver01 ~]# rpm -q --queryformat '%{name}-%{version}-%{release}.%{arch}\n' mysql mysql-4.1.16-1.FC4.1.x86_64 mysql-4.1.16-1.FC4.1.i386 [user02@testserver01 ~]# rpm -ql mysql.x86_64 |head -5 /etc/ld.so.conf.d/mysql-x86_64.conf /etc/my.cnf /usr/bin/msql2mysql /usr/bin/mysql /usr/bin/mysql_config [user02@testserver01 ~]# rpm -ql mysql.i386 |head -5 /etc/ld.so.conf.d/mysql-i386.conf /etc/my.cnf /usr/bin/msql2mysql /usr/bin/mysql /usr/bin/mysql_config
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On Tue, 2006-02-28 at 23:48 -0800, Robinson Tiemuqinke wrote:
Hi,
I'm installing several AMD 64bit machines, and I've also installed 32bit compatibility for legacy programs.
But unfortunately, I've found a "strange" phenomenon: a pair of same name packages, one is i386 version and another is x86_64 version, can be installed at the same time without confliction, although they contains the same set of files, either exectible binaries and libraries or simple documents.
Let's give an example (mysql) listed below, bith mysql.i386 and mysql.x86_64 includes /usr/bin/mysql/ but are installed without confliction.
Then I got confused here (not FC4 OS). :) If I just run 'mysql' from command line, which version (i386, x86_64) of mysql will be run? If I remove one version, say mysql.x86_64, then the file /usr/bin/mysql will get deleted? or it just downgrade to 32bit version only? If the latter is the case, then where does FC4 Linux save the 32bit version binary?
My questions seems pretty riduclous because I'm a newbie to 64bit world. Plaese help.
I will be very appreciated if someone can give me some reference sites about this 32bit|64bit rpm introduction.
[user02@testserver01 ~]# rpm -q --queryformat '%{name}-%{version}-%{release}.%{arch}\n' mysql mysql-4.1.16-1.FC4.1.x86_64 mysql-4.1.16-1.FC4.1.i386 [user02@testserver01 ~]# rpm -ql mysql.x86_64 |head -5 /etc/ld.so.conf.d/mysql-x86_64.conf /etc/my.cnf /usr/bin/msql2mysql /usr/bin/mysql /usr/bin/mysql_config [user02@testserver01 ~]# rpm -ql mysql.i386 |head -5 /etc/ld.so.conf.d/mysql-i386.conf /etc/my.cnf /usr/bin/msql2mysql /usr/bin/mysql /usr/bin/mysql_config
This is all normal, and is how Fedora supports multilib, allowing both 32- and 64-bit applications to run. When multiple different architecture (but otherwise identical) packages are installed, rpm will "prefer" the 64-bit ones for the duplicate files. So you'll be running the 64-bit version of mysql but will have 32-bit mysql libraries available for use by 32-bit applications.
I don't know of any good up to date references for this unfortunately.
Paul.
-
Paul Howarth -
Robinson Tiemuqinke