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