CODEWITHSUNDEEP
linuxoctave
Hanxue
Hanxue

Reputation: 12766

Check GNU Octave compile flag

I have GNU Octave installed across different operating systems, and would like to check the compile flag for them. Specifically on RPM-based systems, the Octave package is compiled with enable64=no, from https://copr.fedorainfracloud.org/coprs/g/scitech/octave5.1/

Is there a way to check what are the command line options for octave?

As a workaround, I can declare a large array, for example

octave:1> a = zeros (1024*1024*1024*3, 1, 'int8');
error: out of memory or dimension too large for Octave's index type

But I would prefer a more definitive way to check Octave's compile flags.

Upvotes: 2

Views: 203

Answers (2)

carandraug
carandraug

Reputation: 13091

You shouldn't be checking for compilation flags because you never know when they will change or what other flags may affect what you really care about. That is why __octave_config_info__ is a private function, meant for internal use only.

In your case, it seems that what you really care about is the max number of elements you can have in an array. In that case, you should use sizemax (largest value allowed for the size of an array):

octave> sizemax 
ans = 9223372036854775806

Upvotes: 2

Andy
Andy

Reputation: 8091

See

__octave_config_info__.ENABLE_64

and

__octave_config_info__.build_environment

Upvotes: 4

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