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[Octave-bug-tracker] [bug #51632] make global pkg paths always relative

From: Philip Nienhuis
Subject: [Octave-bug-tracker] [bug #51632] make global pkg paths always relative to OCTAVE_HOME, no need to pkg rebuild -global when path changes
Date: Sun, 17 Nov 2019 12:11:40 -0500 (EST)
User-agent: Mozilla/5.0 (Windows NT 6.1; rv:52.0) Gecko/20100101 Firefox/52.0

Follow-up Comment #58, bug #51632 (project octave):

Thanks for testing & pushing - I didn't expect it to happen that soon :-)

My current trick is copying over from my Windows partition / installed Octave
by a rule in binary-dist-rules.mk
Today I upgraded my desktop box to Mageia 7, reinstalled all build tools and
when running a fresh mxe-octave clone I saw:

[check requirements]
/bin/bash: octave: command not found
Warning - could not find native build version 6.0.0 of octave - some packages
may fail, but continuing

....so the mxe-octave build tools are already prepared to invoke Octave on
Linux in some way.
As most devs simply need a Linux build tree for Octave in the first place (to
create the dist archive needed for mxe-octave) I figure a simple rule in
Makefile.in could do the trick.

The octave_packages file is simply a text .mat file, ideally written by Octave
One doesn't even need a current Octave when cross-building dev Octave; if one
adds <mxe-octave>/.../mingw64/share/octave/6.0.0/m/pkg to the path the
installed Octave (on Linux) will use the most recent scripts.
"pkg rebuild" is a pretty straightforward function that merely scans the
package install directory (m-files) and adds the found package directories +
related lib/octave/<arch>/ package directories + other info to the packages
cellstruct. It doesn't run any of the functions so this is fairly safe.


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