Firefox query

[Stéphane Graber]

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On 11/10/2011 04:05 PM, David Hopkins wrote:
> Simple question. On Lucid x86_64, is firefox running as a 64bit
> app? The firefox command is /usr/bin/firefox which seems to run
> firefox from /usr/lib/firefox-version.  On RHEL, the firefox script
> uses either lib64 or lib based on the output from uname -m so it
> clear that a 64 bit version is being used. I'm not certain that a
> 64 bit version is running on lucid though. both the 32 and 64 bit
> versions seem to exist.
> 
> Sincerely, Dave Hopkins

Back in Lucid multi-arch didn't exist in Ubuntu so firefox is
definitely 64bit on a 64bit system as there's no way to install the
32bit version on Ubuntu through the distro packages.

It's probably worth noting that the whole /lib32 and /lib64 is a
convention used on Red Hat systems but not on Debian based systems.

These directories may exist on an Ubuntu system but generally
shouldn't be used to know if a software is 32bit or 64bit.

The multi-arch way of doing that (since 11.04) is with
/lib/<arch-triplet/<library> for any library being Multi-Arch:same:

stgraber at castiana:~$ file /lib/i386-linux-gnu/libnih.so.1.0.0
/lib/i386-linux-gnu/libnih.so.1.0.0: ELF 32-bit LSB shared object,
Intel 80386, version 1 (SYSV), dynamically linked,
BuildID[sha1]=0xa182c87dc0fde63db8ca47f9d30291ee3d5eb541, stripped

https://wiki.ubuntu.com/MultiarchSpec


- -- 
Stéphane Graber
Ubuntu developer
http://www.ubuntu.com
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