[cfe-users] error: unknown target CPU 'pentium-m'

Anonymous User via cfe-users cfe-users at lists.llvm.org
Tue Oct 2 10:36:36 PDT 2018

I found this info:


which suggests running:

$ llc --version
(to show supported architectures)

$ llc -march=ARCH -mattr=help
(to list "available CPUs" and "available features")

So I found for my case:

$ llc -march=x86 -mattr=help
Available CPUs for this target:
pentium-m      - Select the pentium-m processor.

And I modified my script to use:

CFLAGS='-O3 -march=x86 -mtune=pentium-m'

Unfortunately clang complains again:

error: unknown target CPU 'x86'
note: valid target CPU values are: (same old list)

I hope someone can shed some light on all this. There
seem to be others complaining from the lack of info.


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