Hi Rene,
I got a PI-3 for Christmas, and have been experimenting with a T2 cross
build.
Back in 2012, I was able to use the Ubuntu LTS release (with some
tweaks) to build T2 on both MIPS and x86, but now with the latest
Ubuntu, and the latest T2, it has gotten much more complicated.
I first tried an X86-64 build (generic minimum) but that got stuck at
stage 1 on glibc32. I went ahead and tried the raspberry pi target, and
that got to stage 1 gcc.
To get both builds, I had to apply some rather ugly hacks (like Barry
mentioned).
For now, I would like to document what I had to do on the Ubuntu build
machine, to get it to run T2. I will follow up in a separate email,
with the svn diffs of the T2 changes to get it as far as I did, and
after that I will send out info on the build failures for where I am
stuck now.
--------------------------------------------------------------------
Ubuntu 16.04 setup notes:
on the host, you will need to install: (apt-get install)
flex
gawk
texinfo (for makeinfo)
zstd for the new compression.
The Download script with the new compression will still fail because the
"file" command does not know how to identify zstd files. to fix this,
you must add the zst magic number to /etc/magic like this:
----------------------------------------------------------------------
root@Ubu-Dev-1:/opt/T2/t2-trunk# cat /etc/magic
# Magic local data for file(1) command.
# Insert here your local magic data. Format is described in magic(5).
# JLR add zstd
# zstd
#0 long 0xfd2fb528 zstd compressed data
0 long 0xfd2fb528 Zstandard compressed data
-----------------------------------------------------------------------------
At this point the Download & Build-Target scripts will work, but there
will be build failures, without doing some tweaks, which I will document
in the next email.
But some packages will still fail unless the following are installed:
squashfs-tools failed at stage 0 unless zlib1g-dev package was installed
on the host. I would think that it should pick up zlib.h from the T2
$root, but I am not sure of this.
I also had to install package libffi-dev so that glib stage 1 would
build. It was not picking it up from T2 fs, but was going to the host's fs.
Regards,
Jan Rovins.
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