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ARMv7 emake failing on emerge: package sys-libs/db-5.3.28-r2
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nelsonwcf
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PostPosted: Tue Mar 21, 2017 1:27 am    Post subject: ARMv7 emake failing on emerge: package sys-libs/db-5.3.28-r2 Reply with quote

Hi,

I've been trying to update my BananaPi for 2 weeks now but a package is causing emerge to fail every time. I've already tried to mask it to see if I could move forward but it seems necessary for many packages including Python.

Could this be a portage tree problem? Any simple way to fix it? I've posted the emerge --info in the link below.

http://pastebin.com/n4Bhqb8B

Thank you in advance.

Nelson
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fedeliallalinea
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PostPosted: Tue Mar 21, 2017 6:42 am    Post subject: Reply with quote

You can post build.log of package that fail with wgetpaste?
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NeddySeagoon
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PostPosted: Tue Mar 21, 2017 11:34 am    Post subject: Reply with quote

Moved from Portage & Programming to Gentoo on Alternative Architectures.

Its an ARM board
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nelsonwcf
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PostPosted: Tue Mar 21, 2017 11:58 pm    Post subject: Reply with quote

fedeliallalinea wrote:
You can post build.log of package that fail with wgetpaste?


Definitely. Here it is: https://paste.pound-python.org/show/sqJcUzPtVdRjf99tz5rT/

Thanks in advance.

Best,
Nelson
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fedeliallalinea
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PostPosted: Wed Mar 22, 2017 6:48 am    Post subject: Reply with quote

Code:
/var/tmp/portage/sys-libs/db-5.3.28-r2/work/db-5.3.28/lang/sql/generated/sqlite3.c:20038:3: error: #error SQLite will not work correctly with the -ffast-math option of GCC.

Remove -ffast-math CLFAGS on your make.conf
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nelsonwcf
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PostPosted: Wed Mar 22, 2017 10:27 pm    Post subject: Reply with quote

fedeliallalinea wrote:
Code:
/var/tmp/portage/sys-libs/db-5.3.28-r2/work/db-5.3.28/lang/sql/generated/sqlite3.c:20038:3: error: #error SQLite will not work correctly with the -ffast-math option of GCC.

Remove -ffast-math CLFAGS on your make.conf


Awesome. It fixed it. A question, though: I have been using these flags for more than a year and I never had problems before (together with -O3). Why would this specific version of this package cause problems with this -ffast-math?

Thank you,
Nelson
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Hu
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PostPosted: Thu Mar 23, 2017 1:27 am    Post subject: Reply with quote

Per info gcc:
info '(gcc.info)Optimize Options':
`-ffast-math'

...

     This option is not turned on by any `-O' option besides `-Ofast'
     since it can result in incorrect output for programs that depend
     on an exact implementation of IEEE or ISO rules/specifications for
     math functions. It may, however, yield faster code for programs
     that do not require the guarantees of these specifications.
Presumably, the authors require some of the guarantees of those standards. The authors believe, whether or not correctly, that removing those guarantees causes their program to break, so they included a specific check to disallow building the program with -ffast-math.
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