Cannot find plugin 'liblto_plugin.so' about lightfm

[maciejkula]

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?

[maciejkula]

You can also try #24 and see if that solves your issue.

[oddskool]

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.

[maciejkula]

Are you using the anaconda python distribution? I can only suppose that could be part of the problem.

[oddskool]

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...

[oddskool]

Indeed, gcc's native arch seems to be x86_64:

$ /usr/local/bin/gcc-4.9 -dumpmachine    
x86_64-apple-darwin13.4.0

[maciejkula]

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

[oddskool]

with #26 same "no such instruction" error :(

[maciejkula]

I got hold of a mac and will try to reproduce your problem.

[maciejkula]

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!

[oddskool]

Yes it works on my setup 👍

[maciejkula]

Perfect, thanks for your help!