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thunderbird32
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PostPosted: Wed Sep 25, 2019 2:40 pm    Post subject: dev-libs/elfutils-0.176-r1: C compiler cannot create ... Reply with quote

[Moderator edit: Changed title to try to attract relevant answers. Original title was Unable to Emerge Gentoo-Sources, but the problem isn't about sys-kernel/gentoo-sources. Rather, the poster wanted sys-kernel/gentoo-sources and got a failure in a prerequisite package. -Hu]

Hello,

I'm attempting to install Gentoo on a Powermac G5, and am following the PPC64 handbook. I'm currently on the "Installing the sources" step on the Kernel page. When I attempt to run the command: "emerge --ask sys-kernel/gentoo-sources "
I get the error:
Code:

...
checking for powerpc64-unknown-linux-gnu-gcc... powerpc64-unknown-linux-gnu-gcc
checking whether the C compiler works... no
configure: error: in `/var/tmp/portage/dev-libs/elfutils-0.176-r1/work/elfutils-0.176-.ppc64':
configure: error: C compiler cannot create executables
See `config.log' for more details
...

See here for complete results (http://dpaste.com/241H6QN)

Here is the build log: http://dpaste.com/2HPQM42
The output of the command "emerge --info '=dev-libs/elfutils-0.176-r1::gentoo'" http://dpaste.com/32F82G2
and the output of the command "emerge -pqv '=dev-libs/elfutils-0.176-r1::gentoo'" http://dpaste.com/2TT8987

Any help would be greatly appreciated. Thank you!
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fedeliallalinea
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PostPosted: Wed Sep 25, 2019 3:06 pm    Post subject: Reply with quote

You are sure that -march=native works with ppc64? Try this configuration for G5
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thunderbird32
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PostPosted: Wed Sep 25, 2019 3:32 pm    Post subject: Reply with quote

I'm not sure, no. This is the first time I've done a PPC64 install. I'll try your recommendation and get back to you. Thank you!
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thunderbird32
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PostPosted: Wed Sep 25, 2019 3:50 pm    Post subject: Reply with quote

fedeliallalinea wrote:
You are sure that -march=native works with ppc64? Try this configuration for G5


That seems to have worked! The only thing I didn't change was the CHOST variable. I left that set to PPC64. Regardless it seems to be working as expected currently.
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fedeliallalinea
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PostPosted: Wed Sep 25, 2019 4:09 pm    Post subject: Reply with quote

thunderbird32 wrote:
That seems to have worked! The only thing I didn't change was the CHOST variable. I left that set to PPC64. Regardless it seems to be working as expected currently.

CHOST should never be changed
Code:
# WARNING: Changing your CHOST is not something that should be done lightly.
# Please consult http://www.gentoo.org/doc/en/change-chost.xml before changing.

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John R. Graham
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PostPosted: Wed Sep 25, 2019 6:06 pm    Post subject: Reply with quote

Moved from Installing Gentoo to Gentoo on PPC.

- John
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schwarzygesetzlos
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PostPosted: Fri Sep 27, 2019 3:06 pm    Post subject: Reply with quote

For ppc/ppc64 its -mcpu= instead of -march=.
See: https://gcc.gnu.org/onlinedocs/gcc-8.3.0/gcc/RS_002f6000-and-PowerPC-Options.html#RS_002f6000-and-PowerPC-Options
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