(first some context, my question follows at the end of this mail)
A few weeks ago, there was a (animated) discussion on one of the mailing lists
(don’t remember exactly which one)) about howto transfer LFS from one machine
to another and the use of a package manager.
This threead was not only interesting from a technical viewpoint, but also to
learn about human behaviour on the Internet.
Anyway, this made me wonder if it would be possible to copy LFS-8.1, built on
an iMac G3, to a PowerMac-G3-Server.
Although both machines are based on the G3 PowerPC, they are quite different.
- the CPU is not exactly the same. The PowerMac has revision : 2.2 (pvr 0008
0202), while the iMac has revision : 2.2 (pvr 0008 0202)
- but most of all, the surrounding chipset is different. The
PowerMac-G3-Server uses mainly third party chips, while the iMac uses Apple
chips:
pol@PowerMac-G3:~$ lspci
9f08:00:00.0 Host bridge: Motorola MPC106 [Grackle] (rev 40)
9f08:00:0d.0 PCI bridge: Digital Equipment Corporation DECchip 21154 (rev 02)
9f08:00:10.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Rage 128 GL PCI
9f08:01:00.0 FireWire (IEEE 1394): Texas Instruments PCILynx/PCILynx2 IEEE 1394
Link Layer Controller (rev 02)
9f08:01:01.0 IDE interface: Silicon Image, Inc. PCI0646 (rev 07)
9f08:01:04.0 SCSI storage controller: Adaptec AHA-2940U2/U2W (rev 01)
9f08:01:05.0 Unassigned class [ff00]: Apple Inc. Paddington Mac I/O
9f08:01:06.0 USB controller: OPTi Inc. 82C861 OHCI USB Host (rev 10)
pol@iMac-G3:~$ lspci
0000:10:0b.0 Host bridge: Apple Inc. UniNorth PCI
0000:10:17.0 Unassigned class [ff00]: Apple Inc. KeyLargo Mac I/O (rev 02)
0000:10:18.0 USB controller: Apple Inc. KeyLargo USB
0000:10:19.0 USB controller: Apple Inc. KeyLargo USB
0001:20:0b.0 Host bridge: Apple Inc. UniNorth Internal PCI
0001:20:0e.0 FireWire (IEEE 1394): Apple Inc. UniNorth FireWire (rev 01)
0001:20:0f.0 Ethernet controller: Apple Inc. UniNorth GMAC (Sun GEM) (rev 01)
9f08:00:0b.0 Host bridge: Apple Inc. UniNorth AGP
9f08:00:10.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Rage
128 VR AGP
I started by making a backup of the LFS-partition on the iMac, transferred it
to the PowerMac and untarred it.
I could chroot in the LFS image on the Powermac to adapt the fstab table.
I updated the yaboot configuration, adding LFS, next to the host system
(Ubuntu-16.4.7-LTS).
I realised that the /home folder on the donor machine was on a separate
partition (but not on the recipient machine), so I had to transfer this
partition as well.
I booted into LFS and got the (meanwhile well-known) message
Kernel panic – not syncing : VFS : Unable to mount root fs on unknown - block
(0,0)
This means mostly that a driver is missing, needed to access the boot device.
More specifically, a driver that is not needed on the iMac with its Apple
chipset.
I recompiled several times the kernel, adding (non-Apple) SCSI drivers (and not
as a module!).
Finally, it looked like adding the “Future Domain 16xx SCSI/AHA-2920A support”
was a hit. The boot process continues, but gets an exception a bit further and
falls in the monitor.
At this point, I got stuck. I tried several other kernel configuration
options, even tried booting with INITRAMFS, but never came beyond the kernel
exception trap.
Then I thought that rebuilding GMP might help. The CPUs are not 100%
identical, so GMP was probably optimised for the iMac-G3, but not for the
PowerMac-G3.
However I got this configuration error:
checking C++ compiler g++ -m32 -O2 -pedantic -mcpu=750... no, std iostream
checking C++ compiler g++ -g -O2... no, std iostream
configure: error: C++ compiler not available, see config.log for details
and in config.log:
/* This test rejects OSF 5.1 Compaq C++ in its default pre-standard iostream
mode, since that mode puts cout in the global namespace, not "std". */
void someoutput (void) { std::cout << 123; }
int main (void) { return 0; }
configure:10650: result: no, std iostream
configure:10521: checking C++ compiler g++ -g -O2
Test compile:
configure:10535: g++ -g -O2 conftest.cc >&5
configure:10538: $? = 0
configure:10542: ./a.out || ./b.out || ./a.exe || ./a_out.exe || ./conftest
configure:10545: $? = 0
Test compile: namespace
configure:10575: g++ -g -O2 conftest.cc >&5
configure:10578: $? = 0
configure:10582: ./a.out || ./b.out || ./a.exe || ./a_out.exe || ./conftest
configure:10585: $? = 0
Test compile: std iostream
configure:10621: g++ -g -O2 conftest.cc >&5
In file included from /usr/include/c++/7.3.0/ext/string_conversions.h:41:0,
from /usr/include/c++/7.3.0/bits/basic_string.h:6349,
from /usr/include/c++/7.3.0/string:52,
from /usr/include/c++/7.3.0/bits/locale_classes.h:40,
from /usr/include/c++/7.3.0/bits/ios_base.h:41,
from /usr/include/c++/7.3.0/ios:42,
from /usr/include/c++/7.3.0/ostream:38,
from /usr/include/c++/7.3.0/iostream:39,
from conftest.cc:3:
/usr/include/c++/7.3.0/cstdlib:75:15: fatal error: stdlib.h: No such file or
directory
#include_next <stdlib.h>
^~~~~~~~~~
compilation terminated.
configure:10624: $? = 1
failed program was:
/* This test rejects g++ 2.7.2 which doesn't have <iostream>, only a
pre-standard iostream.h. */
#include <iostream>
/* This test rejects OSF 5.1 Compaq C++ in its default pre-standard iostream
mode, since that mode puts cout in the global namespace, not "std". */
void someoutput (void) { std::cout << 123; }
int main (void) { return 0; }
configure:10650: result: no, std iostream
configure:10666: error: C++ compiler not available, see config.log for details
while stdlin.h seems to exist (on both machines):
root [ /sources/gmp-6.1.2 ]# locate stdlib.h
/home/pol/freetype-2.8/include/freetype/config/ftstdlib.h
/sources/blfs/cpio-2.12/gnu/stdlib.h
/sources/linux-4.15.7/arch/powerpc/boot/stdlib.h
/usr/include/bash/include/ansi_stdlib.h
/usr/include/bits/stdlib.h
/usr/include/c++/7.3.0/stdlib.h
/usr/include/c++/7.3.0/tr1/stdlib.h
/usr/include/freetype2/freetype/config/ftstdlib.h
/usr/include/stdlib.h
/usr/share/doc/python-3.6.2/html/tutorial/stdlib.html
/usr/share/doc/python-3.6.4/html/tutorial/stdlib.html
I went back to the iMac, tried rebuilding GMP there, and got exactly the same
configuration error.
Now my question: why can’t I recompile GMP-6.1.2? I did it successfully back
in 2018, when I built LFS-8.1.
pvg
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