Bug 550428 – linux-mod.eclass ignores configured kernel CROSS_COMPILE option

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Luke-Jr 2015-05-26 02:30:15 UTC]

Created attachment 403980 [details]
build.log

i686-pc-linux-gnu-ld: Relocatable linking with relocations from format elf64-x86-64 (/var/tmp/portage/net-firewall/xtables-addons-2.6/work/xtables-addons-2.6/extensions/compat_xtables.o) to format elf32-i386 (/var/tmp/portage/net-firewall/xtables-addons-2.6/work/xtables-addons-2.6/extensions/compat_xtables.ko) is not supported

My kernel has the necessary GNUmakefile for cross-compiling:
    ARCH=x86_64
    CROSS_COMPILE=x86_64-pc-linux-gnu-
    include Makefile

[Comment 1 Mike Gilbert 2015-05-29 01:33:51 UTC]

I think this would happen with any out-of-tree kernel module.

[Comment 2 Mike Pagano 2021-08-23 22:33:16 UTC]

Is this still an issue?

[Comment 3 Luke-Jr 2021-08-24 02:45:23 UTC]

Yes

[Comment 4 Mike Pagano 2021-09-02 19:49:32 UTC]

So right now linux-info ignore GNUMakefile .

I wrote a patch to address this.

[Comment 5 Mike Pagano 2021-09-04 20:49:18 UTC]

So, linux-info should not read GNUMakefile properly.

Can you test again, I commited the new eclass 3 hours ago as of this writing.

So hopefully,you'll have it on next sync.

[Comment 6 Mike Pagano 2021-09-04 20:49:36 UTC]

(In reply to Mike Pagano from comment #5)
> So, linux-info should not read GNUMakefile properly.
> 
> Can you test again, I commited the new eclass 3 hours ago as of this writing.
> 
> So hopefully,you'll have it on next sync.

Should not read / Should read

[Comment 7 Luke-Jr 2021-09-04 21:22:11 UTC]

This is an issue with the zfs-kmod ebuild itself, not the eclass

[Comment 8 Mike Gilbert 2021-09-04 22:45:01 UTC]

(In reply to Luke-Jr from comment #7)
> This is an issue with the zfs-kmod ebuild itself, not the eclass

Nobody made any mention of zfs-kmod in this bug. The original bug summary mentioned net-firewall/xtables-addons.

[Comment 9 Mike Gilbert 2021-09-04 23:44:59 UTC]

linux-mod_src_compile passes CROSS_COMPILE=${CHOST}- to make on the command line. Any definition of CROSS_COMPILE in GNUmakefile or Makefile will be overridden by the value on the command line.

Removing this command line setting would cause plain "gcc" to be used on most sytems, and this would cause failures on systems with sys-devel/gcc[-native-symlinks].

linux-mod.eclass really was not designed to allow you to use a separate toolchain for kernel builds.

[Comment 10 Luke-Jr 2021-09-05 02:03:49 UTC]

Sorry, I mixed this up with the new bug I filed :(

Ignore my zfs-kmod comments here.

[Comment 11 Mike Gilbert 2021-09-05 16:03:22 UTC]

Please give this PR a try.

https://github.com/gentoo/gentoo/pull/22225

[Comment 12 Larry the Git Cow 2021-09-06 20:18:53 UTC]

The bug has been closed via the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=328b6c7b4f2f6f9ef5b053688af3272a314667ad

commit 328b6c7b4f2f6f9ef5b053688af3272a314667ad
Author:     Mike Gilbert <[e-mail]>
AuthorDate: 2021-09-05 16:01:23 +0000
Commit:     Mike Gilbert <[e-mail]>
CommitDate: 2021-09-06 20:18:37 +0000

    linux-mod.eclass: set CROSS_COMPILE in the environment
    
    This allows it to be overriden in local Makefiles.
    
    Closes: https://bugs.gentoo.org/550428
    Closes: https://github.com/gentoo/gentoo/pull/22225
    Signed-off-by: Mike Gilbert <[e-mail]>

 eclass/linux-mod.eclass | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)