Experimental Physics and
Industrial Control System

"Zhijian Yin (ZY)" <[email protected]> · Fri, 14 Oct 2005 14:29:35 -0400

Hi, Ernest,
Just like you, I am trying to compile epics for a AMD64 linux box. I am
running Debian.
Compiling epics base stalls, because
$(EPICS)/base/startup/EpicsHostArch.pl(and EpicsHostArch shell script)
reports amd64 as "unsupported".
I found a quick and dirty fix is to add x86_64 to the cpu list for
x86-linux, i.e., change EpicsHostArch script to
case $sysname in

Linux )

os=linux

cpu=`uname -m`

case $cpu in i386 | i486 | i586 | i686 | x86_64 ) ###
added x86_64

cpu=x86
And change the related lines in EpicsHostArch.pl to
sub GetEpicsHostArch { # no args

$arch=$Config{'archname'};

if ($arch =~ /sun4-solaris/) { return "solaris-sparc";

} elsif ($arch =~ m/i86pc-solaris/) { return "solaris-x86";

} elsif ($arch =~ m/sun4-sunos/) { return "sun4-68k";

} elsif ($arch =~ m/i[3-6]86-linux/) { return "linux-x86";

} elsif ($arch =~ m/x86_64/) { return
"linux-x86"; ####this is a newly added line

} elsif ($arch =~ m/MSWin32-x86/) { return "win32-x86";

} elsif ($arch =~ m/cygwin/) { return "cygwin-x86";

} elsif ($arch =~ m/PA-RISC1.1/) { return "hpux-parisc";

} elsif ($arch =~ m/darwin/) { return "darwin-ppc";

} else { return "unsupported"; }

}

The idea is to have 'uname -m' (which reports as x86_64 for AMD64) as
linux-x86 for epics. 
Recompilation works fine. Since it uses x86_64 libs, the build is 64bit.
A better way probably is as what you suggested, add x86_64 as a seperate
architecture. I think you can just copy the linux-x86 files.

ZY

Ernest L. Williams Jr. wrote:
Hi,
I have an AMD64 linux box running redhat linux and want to build both a
32-bit and 64-bit version of EPICS BASE.
Before we get started, I wanted to check the community for EPICS running
on AMD64 natively.  Is anyone doing this?
I would like to start with just building EPICS R3.14 natively against an
ADM64 Opteron architecture.  Not interested in cross-compiling yet (i.e.
let's forget about vxWorks for now).
Of course, we will need new configuration files in
"<EPICS_BASE/configure/os>"
I supposed they would look like so:
================================================
CONFIG.Common.linux-x86_64
CONFIG.Common.linux-x86_64-debug
CONFIG.linux-x86_64.Common
CONFIG.linux-x86_64-debug.Common
CONFIG.linux-x86_64-debug.linux-x86_64-debug
CONFIG.linux-x86_64.linux-x86_64
CONFIG.linux-x86_64.linux-x86_64-debug
CONFIG_SITE.Common.linux-x86_64
CONFIG_SITE.linux-x86_64.Common
CONFIG_SITE.linux-x86_64-debug.linux-x86_64-debug
CONFIG_SITE.linux-x86_64.linux-x86_64
CONFIG_SITE.linux-x86_64.UnixCommon
=================================================
Thanks,
Ernest L. Williams Jr.
SNS Control Systems Group
ORNL

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System