1 |
This is a testing request aimed at all arches that have differing |
2 |
kernel/userspace bit counts. My short list so far is: |
3 |
- ppc64 - 64/32 (tested myself, but more testing needed) |
4 |
- sparc64 - 64/32 |
5 |
- mips64 - 64/32 [1] |
6 |
|
7 |
Other possibles (they should be theoretically capable of it, but the |
8 |
profile is marked broken, or doesn't exist in Gentoo presently): |
9 |
- s390x - 64/31 |
10 |
- amd64 - 64/32 (the profile is marked as broken) |
11 |
- superh - 64/32 |
12 |
- hppa - 64/32 |
13 |
|
14 |
Additionally, I'd like some testing under pure 32, pure 64, and multilib |
15 |
systems, just to be 100% certain it doesn't break existing |
16 |
functionality. I have tested x86 myself, and had reports that pure ppc64 |
17 |
work fine. |
18 |
|
19 |
This patch uses multilib.eclass to bring linux-mod support much further |
20 |
forward in allowing kernel modules in the portage tree to be built on |
21 |
64/32 split systems. |
22 |
|
23 |
It would be nice to have this in 2006.1 (I suspect catalyst/genkernel |
24 |
could probably benefit greatly from it). |
25 |
|
26 |
There's two parts to it: |
27 |
1. get-KERNEL_CC support and usage in linux-mod.eclass |
28 |
2. Profile changes: Each user needs to define KERNEL_ABI, and then |
29 |
CHOST_*, CFLAGS_*, LDFLAGS_* for the value of KERNEL_ABI. |
30 |
For a platform with a biarch compiler, you'd use CFLAGS_xxxx64="-m64" |
31 |
(or 32), and LDFLAGS_xxxx64="-m TARGETNAME". |
32 |
For a platform with two separate compilers (kgcc64), but a single |
33 |
binutils, use the same LDFLAGS, but instead of CFLAGS, do |
34 |
CHOST_xxxx64="......." instead. |
35 |
|
36 |
Example for ppc64 with 32-bit userland. |
37 |
+KERNEL_ABI="ppc64" |
38 |
+LDFLAGS_ppc64="-m elf64ppc" |
39 |
+CHOST_ppc64="powerpc64-unknown-linux-gnu" |
40 |
|
41 |
Now the bug with the patch: |
42 |
Bug 133382: |
43 |
http://bugs.gentoo.org/show_bug.cgi?id=133382 |
44 |
|
45 |
Test cases (some of them may not compile if built into your kernel): |
46 |
sys-block/iscsitarget-0.4.13 |
47 |
net-wireless/zd1211-80 |
48 |
x11-base/x11-drm-20060608 |
49 |
sys-fs/cowloop-2.15-r1 |
50 |
sys-fs/fuse |
51 |
|
52 |
Notes. |
53 |
1. Mips: with your triple ABI stuff, you might want to look very closely |
54 |
at this. |
55 |
|
56 |
-- |
57 |
Robin Hugh Johnson |
58 |
E-Mail : robbat2@g.o |
59 |
GnuPG FP : 11AC BA4F 4778 E3F6 E4ED F38E B27B 944E 3488 4E85 |