SETARCH(8) Linux Programmer’s Manual 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.
OPTIONS
-v Be verbose.
-h, --help
Display help (it is also displayed when setarch takes no argu-
ments).
-3 Specifies that processes should use a maximum of 3GB of address
space on systems where it is supported (ADDR_LIMIT_3GB).
-B Turns on ADDR_LIMIT_32BIT.
-F Userspace function pointers point to descriptors (turns on
FDPIC_FUNCPTRS).
-I Turns on SHORT_INODE.
-L Changes the way virtual memory is allocated (turns on the
ADDR_COMPAT_LAYOUT).
-R Disables randomization of the virtual address space (turns on
ADDR_NO_RANDOMIZE).
-S Turns on WHOLE_SECONDS.
-T Turns on STICKY_TIMEOUTS.
-X Turns on READ_IMPLIES_EXEC.
-Z 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
AUTHOR
Elliot Lee <sopwith@redhat.com>
Jindrich Novy <jnovy@redhat.com>
BUGS
Report bugs via http://bugzilla.redhat.com/bugzilla/
setarch Oct 2004 SETARCH(8)
