[Octave-bug-tracker] [bug #57251] cannot install packages on mac os catalina

[Trace Baker]

URL:
  <https://savannah.gnu.org/bugs/?57251>

                 Summary: cannot install packages on mac os catalina
                 Project: GNU Octave
            Submitted by: mtn_trace
            Submitted on: Sun 17 Nov 2019 07:30:38 PM UTC
                Category: Libraries
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Installation Failure
                  Status: None
             Assigned to: None
         Originator Name: mtn_trace
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.4.1
        Operating System: Mac OS

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Details:

Using Mac OS Catalina 10.15.1, Octave 4.4.1

Also fails on previously-working Octave 4.4.0

Attempting to install a package, ...



>> pwd
ans = /Users/trace/Downloads
>> ls
io-2.4.13.tar.gz        statistics-1.4.1.tar.gz
>> getenv('CXX')
ans = /usr/bin/cpp
>> pkg install io-2.4.13.tar.gz
configure: error: in
`/var/folders/rt/zwkxxgsn4zs5mvtcswyvxty40000gn/T/oct-t3QAgW/io-2.4.13/src':
configure: error: C++ compiler cannot create executables
See `config.log' for more details
checking for mkoctfile...
/Applications/Octave-4.4.1.app/Contents/Resources/usr/Cellar/octave-octave-app_4.4.1_0/4.4.1/bin/mkoctfile-4.4.1
checking for octave-config...
/Applications/Octave-4.4.1.app/Contents/Resources/usr/Cellar/octave-octave-app_4.4.1_0/4.4.1/bin/octave-config-4.4.1
checking whether the C++ compiler works... no

pkg: error running the configure script for io.
error: called from
    configure_make at line 82 column 9
    install at line 184 column 7
    pkg at line 437 column 9
>>



Cannot find config.log.




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