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On Wed, Apr 20, 2016 at 11:07 PM, Mike Frysinger <vapier@g.o> wrote: |
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> On 20 Apr 2016 13:52, Leno Hou wrote: |
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> > Authored-by: Linda Jiang <linda.qj25@×××××.com> |
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> > --- |
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> > eclass/toolchain-binutils.eclass | 1 + |
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> > 1 file changed, 1 insertion(+) |
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> |
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> when you submit a patch that is not extremely obvious, you must provide |
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> details/justification in the commit message. otherwise we're forced to |
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> try and guess what/why it is you want to do things, and ultimately we |
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> tend to start of just saying "no". |
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> |
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Sorry, We describes details/justification in Gentoo Bugzilla#580614 |
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<https://bugs.gentoo.org/show_bug.cgi?id=580614>. Explain here again. |
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1) When use CHOST="powerpc64le-unknown-linux-gnu" (active host?) to build |
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binutils. there is no birch support. |
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See current supported emulations#powerpc64le-unknown-linux-gnu-ld -V |
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leno@localhost ~ $ powerpc64le-unknown-linux-gnu-ld -V |
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GNU ld (Gentoo 2.25.1 p1.1) 2.25.1 |
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|
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Supported emulations: |
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|
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elf64lppc |
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elf32lppc |
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elf32lppclinux |
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|
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elf32lppcsim |
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|
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But we want elf64ppc for building grub2. If we there is no elf64ppc |
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emulation, we can't compiling grub2 and grub2-install |
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for ppc64le platform. |
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2) Following are the emulations what we want |
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|
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leno@localhost ~ $ powerpc64le-unknown-linux-gnu-ld -V |
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|
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GNU ld (Gentoo 2.25.1 p1.1) 2.25.1 |
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|
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Supported emulations: |
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|
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elf64lppc |
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|
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elf32lppc |
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|
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elf32lppclinux |
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|
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elf32lppcsim |
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|
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elf32ppclinux |
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elf32ppc |
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elf32ppcsim |
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elf64ppc |
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3) Linda Jiang found that *--enable-targets=all *make on sense to build the |
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above emulations what we want. |
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But *--enable-targets="powerpc-linux-gnu" *built the targets we want. |
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If there is no other arch-specific |
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handled like this, Is there another can handle this case? where is the |
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file you attached ? |
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and indeed, when i query a default ppc64 linker, it says it already |
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> supports both 32bit & 64bit targets: |
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> $ powerpc64-unknown-linux-gnu-ld --help | grep supported |
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> powerpc64-unknown-linux-gnu-ld: supported targets: elf64-powerpc |
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> elf64-powerpcle elf32-powerpc elf32-powerpcle aixcoff-rs6000 |
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> aixcoff64-rs6000 aix5coff64-rs6000 elf64-little elf64-big elf32-little |
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> elf32-big plugin srec symbolsrec verilog tekhex binary ihex |
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> powerpc64-unknown-linux-gnu-ld: supported emulations: elf64ppc elf32ppc |
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> elf32ppclinux elf32ppcsim |
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> |
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> it would have to of course in order for biarch support (which works) |
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> which is how we build 64-bit kernels in a 32-bit userland. |
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> -mike |
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> |
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