4.11 branch RSB is broken with python3 on Linux

[Chris Johns]

With Ubuntu 20 the 4.11 RSB fails with:

(py) johnsy@radium:~/si/rtems/rsb/rtems$ ../source-builder/sb-set-builder --prefix=$HOME/si/rtems/4.11 --log=arm.txt 4.11/rtems-arm                                                                                        
../source-builder/sb/macros.py:233: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if key.startswith('%{') and key[-1] is '}':                                                  
../source-builder/sb/macros.py:269: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if c is '#' and not state.startswith('value'):                    
../source-builder/sb/macros.py:272: SyntaxWarning: "is" with a literal. Did you mean "=="?     
  if not (state is 'key' and len(token) == 0) and \                       
../source-builder/sb/macros.py:275: SyntaxWarning: "is" with a literal. Did you mean "=="?
  if state is 'key':                                                   
[blah blah blah]

[Chris Johns]

The module linux.py is also broken. The error is the lack of the dist module that effected master recently.

I am wondering if I should back port all the python code from master? It is clean and working on all hosts and is stable.

[Chris Johns]

GDB 7.9 does not build because that version of GDB only supports python2. I suggest we move to the same version of Python as master (9.1). The GDB version does not effect the target code.

[Chris Johns]

RTEMS tools is also suffering from the same problem in macros.py with python 3.8.2.

[Chris Johns <chrisj@…>]

In 1dcdcad/rtems-tools:

rtemstoolkit: Fix macro's use of 'is'

Updates #4111

[Chris Johns <chrisj@…>]

In af8c3926/rtems-tools:

rtemstoolkit/linux: Fix the host support

Updates #4111

[Chris Johns]

Updating gdb to 9.1 breaks 4.11/rtems-sparc because the SIS patches do not apply. I cannot see an easy way out of this because we are wedged between no Python2 support and the need to support packages for a long period. The sparc will stay with gdb 7.9 and I will disable python.

[Joel Sherrill]

Assuming it works as I expect, backporting RSB code from the master is fine to address this. All release branch dependencies should be in configuration files.

[Chris Johns <chrisj@…>]

In 158ad68/rtems-source-builder:

sb: Back port the RTEMS 5 and 6 RSB engine.

• Build GDb first as we do for RTEMS 5 and later

• Update GDB to 9.1 for all archs expect SPARC. The SIS patches only apply to 7.9. Disable Python for SPARC

Closes #4111