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Description of problem:

octave bindings with 5.1 fail to build with errors like:

BUILDSTDERR: /builddir/build/BUILD/plplot-5.14.0/fedora/bindings/octave/plplot_octaveOCTAVE_wrap.cxx: In function 'void SWIG_Octave_LinkGlobalValue(std::__cxx11::string)':
BUILDSTDERR: /builddir/build/BUILD/plplot-5.14.0/fedora/bindings/octave/plplot_octaveOCTAVE_wrap.cxx:2274:3: error: 'symbol_table' has not been declared
BUILDSTDERR:    symbol_table::mark_global(name);
BUILDSTDERR:    ^~~~~~~~~~~~

Upstream swig has support for 5.1 now.  I'm not sure what the best course here will be.  Will there be a swig 4 module stream soon?  Are the octave support patches easily back-ported?  What about a swig4 package in EPEL?

Version-Release number of selected component (if applicable):
swig-3.0.12-18.module+el8+2480+72897362.x86_64

Created attachment 1621374 [details]
Support for Octave 4.4

Created attachment 1621375 [details]
Support for Octave 5.1

Created attachment 1621376 [details]
Adapt OCTAVE_LDFLAGS for Octave 5.1

It will be easier to backport the octave patches than create stream for SWIG 4.0.

I attached all necessary patches.

Octave is not supported by RHEL and I don't have any experience with it. 

Could you please provide me any small example how to test that it works properly after the fix?

Easiest would be to simply rebuild the current octave package from Fedora master.

Thank you for the report. 

Please contact Red Hat support that helps you escalate this issue.

The support of new octave will be added by module swig:4.0.

*** This bug has been marked as a duplicate of bug 1853639 ***