I am currently building under cygwin for the Virtex-4. Yes, it's likely
more of a pain, but its doable. But any way you slice it, its not
instantaneous to get a build environment up and running.
Anyway, here's what I'm using right now:
crosstool 0.42 (gcc3.4.1, glibc2.3.3) (possibly patched)
Linux 2.6.24-rc8-xlnx (git.xilinx.com)
- with patch for building under cygwin:
http://lkml.org/lkml/2007/2/22/421
- A missing elf.h file, not in my cygwin distribution.
Also a pain with cygwin is the NFS server - I had difficulty getting it
to work with more recent cygwin install, and have been unable to
downgrade it. Finally, with no loopback device in cygwin, if you want
to create initrd's, you have to do this on a Linux box. But this is now
less of an issue in 2.6 with initramfs.
-bri
Phil Hochstetler wrote:
I'm setting up a new development environment to get a working port of
Linux on the Xilinx Virtex-4 chip (I have a Xilinx ML403 board). I'm
looking for the quickest way to get a working development environment
for the 2.6 kernel without paying thousands of $$ (what happened to
MontaVista?). My first attempt was to use google and found lots of
resources. The problem is that much of the info is dated or makes
assumptions about your environment. I read Grants write-up at
http://wiki.secretlab.ca/index.php/Linux_on_Xilinx_Virtex. Because I
want to use Windows XP SP2 as the host if possible, I went down the
path of installing the current Cygwin and was able to create cross
tools (gcc 4.1) successfully. The problem I am having is that the
Linux build process requires a newer gcc than 3.4.4-3 which is what
Cygwin provides. I have used the EDK to build a bsp package
successfully so that is not a problem. I tried to compile the
2.6.24.2 mainline kernel but it fails to compile using the Cygwin
tools (it never gets as far as using them).
I guess what I am looking for is advise on the lowest risk, easiest to
set up environment to setup that will just work. Also advise on which
kernel to use. I don't need a detailed tutorial but a high level
direct that is known to work. I am thinking of using either the
secret lab tree or the Xilinx tree as recommended in Grants wiki
page. Should I just forget using XP and install a Linux (x86
processor so I must use cross tools)? If so, what is the recommend
distro and what version?
Thanks for all your sharing of experience. I hope to contribute back
as soon as I can.
--phil
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Brian Silverman
Concept X, LLC
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