Bug 1280387 - [dssp]: remove hardcoded -O3 from makefile
[dssp]: remove hardcoded -O3 from makefile
Product: Fedora
Classification: Fedora
Component: dssp (Show other bugs)
ppc64le Linux
unspecified Severity unspecified
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Assigned To: Dave Love
Fedora Extras Quality Assurance
Depends On: 1278026
Blocks: F-ExcludeArch-ppc64le/PPC64LETracker
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Reported: 2015-11-11 10:49 EST by Rafael Fonseca
Modified: 2016-01-30 13:21 EST (History)
1 user (show)

See Also:
Fixed In Version: dssp-2.2.1-7.fc23
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2016-01-30 13:21:01 EST
Type: Bug
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
remove -O3 from CFLAGS (1.76 KB, patch)
2015-11-11 10:49 EST, Rafael Fonseca
no flags Details | Diff

  None (edit)
Description Rafael Fonseca 2015-11-11 10:49:38 EST
Created attachment 1092800 [details]
remove -O3 from CFLAGS

Description of problem: dssp's makefile adds -O3 to CFLAGS, overwriting the -O2 used by optflags, thus making the compilation fail on ppc64le with an ICE (see #1278026). According to [1], using -O3 is discouraged.

Version-Release number of selected component (if applicable): 2.2.1-6

How reproducible: always on ppc64le.

Steps to Reproduce: ppc-koji build dssp.

Additional info: it also fails for F22 and F23. Patch attached.

[1] https://fedoraproject.org/wiki/Packaging:Guidelines#Compiler_flags
Comment 1 Dave Love 2015-12-13 11:02:50 EST
orion has approved adding recommended optimization flags to a computational
program, and it's pretty bad news for HPC use if you can't use -O3 on power8.
I've made an arch-specific mod in 2.2.1-7 so that it builds, and will keep this
open pending a gcc fix.
Comment 2 Fedora Update System 2016-01-21 11:45:53 EST
dssp-2.2.1-7.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-3eb79d5265
Comment 3 Fedora Update System 2016-01-21 23:56:07 EST
dssp-2.2.1-7.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-3eb79d5265
Comment 4 Fedora Update System 2016-01-30 13:20:59 EST
dssp-2.2.1-7.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

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