Comments (12)
Could it be because you're trying to link to the Anaconda version of python? This should not be related to llvm at all.
Can you try using a non-Anaconda python installation?
from lightfm.
You can also try #24 and see if that solves your issue.
from lightfm.
Ok, #24 fixed part of the problem, however I had to modify the CXX flags to get it to compile:
- '-march=native',
+ '-march=corei7',
Otherwise gcc complains about unknown asm instructions (e.g. no such instruction: vmovsd 16(%rdi), %xmm0
).
It's a bit odd since native architecture should be detected as corei7 I presume.
from lightfm.
Are you using the anaconda python distribution? I can only suppose that could be part of the problem.
from lightfm.
Yes I do.
Trying to compile with the brew python (2.7.9) in the path instead of the Anaconda one still triggers the "no such instruction" error.
So it seems that the error may be more related to something else (cpu architecture detection maybe?).
The gcc command with brew python:
gcc-4.9 -fno-strict-aliasing -fno-common -dynamic -I/usr/local/include -I/usr/local/opt/sqlite/include -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/usr/local/Cellar/python/2.7.9/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c lightfm/lightfm_fast.c -o build/temp.macosx-10.9-x86_64-2.7/lightfm/lightfm_fast.o -fopenmp -march=native -ffast-math
Output of uname -a
:
Darwin 14.4.0 Darwin Kernel Version 14.4.0: Thu May 28 11:35:04 PDT 2015; root:xnu-2782.30.5~1/RELEASE_X86_64 x86_64
This is a MacBookAir under Yosemite.
At this point I managed to get past the issue and I believe it is likely related to a library or configuration you use, so maybe a sensible thing to do is to keep this thread for other users...
from lightfm.
Indeed, gcc
's native arch seems to be x86_64:
$ /usr/local/bin/gcc-4.9 -dumpmachine
x86_64-apple-darwin13.4.0
from lightfm.
I see. Could you have a look at #26?
It might fix the problem, according to http://stackoverflow.com/questions/9840207/how-to-use-avx-pclmulqdq-on-mac-os-x-lion/19342603#19342603
from lightfm.
with #26 same "no such instruction" error :(
from lightfm.
I got hold of a mac and will try to reproduce your problem.
from lightfm.
It is a problem with the Anaconda distribution. I have updated #26 to automatically drop -march=native
whenever we know we're dealing with anaconda. This should finally fix it!
from lightfm.
Yes it works on my setup 👍
from lightfm.
Perfect, thanks for your help!
from lightfm.
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