Red Hat Bugzilla – Bug 1280387
[dssp]: remove hardcoded -O3 from makefile
Last modified: 2016-01-30 13:21:01 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 , 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.
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.
dssp-2.2.1-7.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-3eb79d5265
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
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.