12-16-2007
Quote:
Originally Posted by
this213
Next, why would you want to create 32-bit objects on a 64-bit platform?
32 bit programs are smaller and faster for programs that don't need more than 2Gig of memory. Most 64 bit processers (DEC Alpha excepted) support both 32bit and 64bit binaries, and most 64 bit operating systems support different memory models simultaneously on a process by process basis.
I've generally found that compilers on 64 bit systems build 32 bit code by default and require additional switches to produce 64 bit code. The linkers are normally able to work out what memory model the code is and will reject attempts to link code with differing models.
7 More Discussions You Might Find Interesting
1. AIX
I've been trying to compile an application that works on AIX 5L in 32 bit mode on an AIX 5L 64 bit mode machine. In doing so I get a lot of undefined symbol errors.
Below is a sample of what the output looks like.....
%make -f makefile_hl7 all
cc... (3 Replies)
Discussion started by: morrisey
3 Replies
2. Red Hat
Hi all,
I'm looking to cover a corner case for an upcoming test cycle. Is there a way to boot a RedHat Advanced Server 4 (update 3) installed on a Power PC machine to use a 32 bit kernel? This would be similar to what is done here -> https://www.unix.com/aix/26204-aix-platform.html
I've done... (0 Replies)
Discussion started by: philrau
0 Replies
3. Linux
Hi,
I am using 32 bit machine, and I want to compile 64 bit application on 32-bit machine.
So please tell me is it possible or not?
Regards
Mandar (7 Replies)
Discussion started by: Mandar123
7 Replies
4. UNIX for Advanced & Expert Users
Hi.
I need to migrate the whole unix environment from a Unix mp-ras 32 bit to a Linux Suse 64 bit.
1) can i use cpio to copy the data?
2) can i just copy the users from unix to linux or do i have to create them by hand
3) are there any other concerns i should worry about?
thanx (1 Reply)
Discussion started by: mrodrig
1 Replies
5. UNIX for Advanced & Expert Users
Hi,
I am compiling Qt-4.7 for 32-bit on 64-bit (x86_64) Ubuntu 8.04 desktop. I have installed all the 32-bit libraries (/lib32 and /usr/lib32) through getlibs and "apt-get install ia32-libs". But I am getting the following error while configuring the qt project as:
./configure -platform... (2 Replies)
Discussion started by: royalibrahim
2 Replies
6. UNIX for Dummies Questions & Answers
Hello everyone. This is an awesome forum. Glad to have joined! :)
I use Linux mostly, even for Desktop usage. I just love everything about it, all the way down to how the font looks while browsing. Its just so sleek and sexy.
But I also boot Windows for those programs I just need that only... (23 Replies)
Discussion started by: insomnia
23 Replies
7. Red Hat
Hi,
I am new to Linux OS. My question is that "is it possible to install 32 Bit application on 64 Bit OS?"
I have the following Redhat OS on VMware workstation.
OS - Red Hat Enterprise Linux Server release 6.2 | 2.6.32-220.el6.x86_64
While installing the application I am getting the... (2 Replies)
Discussion started by: poga
2 Replies
SETARCH(8) System Administration SETARCH(8)
NAME
setarch - change reported architecture in new program environment and set personality flags
SYNOPSIS
setarch <arch> [options] [program [arguments]]
arch [options] [program [arguments]]
DESCRIPTION
setarch This utility currently only affects the output of uname -m. For example, on an AMD64 system, running 'setarch i386 program' will
cause 'program' to see i686 (or other relevant arch) instead of x86_64 as machine type. It also allows to set various personality options.
The default program is /bin/sh.
OPTIONS
-v, --verbose
Be verbose.
-h, --help
Display help (it is also displayed when setarch takes no arguments).
-V, --version
Output version information and exit.
--uname-2.6
Causes the program to see a kernel version number beginning with 2.6.
-3, --3gb
Specifies that processes should use a maximum of 3GB of address space on systems where it is supported (ADDR_LIMIT_3GB).
--4gb Ignored (for backward compatibility only).
--list List architectures that can be set.
-B, --32bit
Turns on ADDR_LIMIT_32BIT.
-F, --fdpic-funcptrs
Userspace function pointers point to descriptors (turns on FDPIC_FUNCPTRS).
-I, --short-inode
Turns on SHORT_INODE.
-L, --addr-compat-layout
Changes the way virtual memory is allocated (turns on the ADDR_COMPAT_LAYOUT).
-R, --addr-no-randomize
Disables randomization of the virtual address space (turns on ADDR_NO_RANDOMIZE).
-S, --whole-seconds
Turns on WHOLE_SECONDS.
-T, --sticky-timeouts
Turns on STICKY_TIMEOUTS.
-X, --read-implies-exec
Turns on READ_IMPLIES_EXEC.
-Z, --mmap-page-zero
Turns on MMAP_PAGE_ZERO.
EXAMPLES
setarch ppc32 rpmbuild --target=ppc --rebuild foo.src.rpm
setarch ppc32 -v -vL3 rpmbuild --target=ppc --rebuild bar.src.rpm
setarch ppc32 --32bit rpmbuild --target=ppc --rebuild foo.src.rpm
AUTHOR
Elliot Lee <sopwith@redhat.com>
Jindrich Novy <jnovy@redhat.com>
AVAILABILITY
The setarch command is part of the util-linux package and is available from Linux Kernel Archive <ftp://ftp.kernel.org/pub/linux/utils
/util-linux/>.
util-linux September 2011 SETARCH(8)