Support U24

[mfeit-internet2]

Title says it all.

TO-DO:

• Do a build with OWAMP present and make sure that all works
• Consolidate macros that determine whether or not to build iperf3.
• Build of pscheduler-tool-s3-benchmark doesn't work right because of missing dependency
• Convert all use of Python re to use raw strings (r'') to dodge invalid escape sequence warnings
• Upgrade jq to 1.7 (See Upgrade jq to 1.7 #1445)

[laeti-tia]

I just tested a build from the issue-1441 branch and see a possible problem with jq. Ubuntu 24 is shipping jq-1.7.1 which gets installed instead of our own 1.6.0 build. And I then get this error:

ERROR:  ImportError: /usr/lib/python3/dist-packages/_pyjq.cpython-312-x86_64-linux-gnu.so: undefined symbol: jv_is_integer_large

Should we force installing our 1.6.0 or should we build a newer 1.7.1 containing this missing function?

[mfeit-internet2]

Neither. The missing function was added as part of a patch to resolve #717 and #785. This will be covered by a jq upgrade in #1445.

[mfeit-internet2]

@laeti-tia If we specify 1.6 as a dependency, will that be installed even if 1.7 is available? I'm thinking we should just stick to 1.6 for the bugfix and save the upgrade for the next feature release.

[laeti-tia]

I also see these warnings under U24, not sure if it's something we should correct or if it's benign:

Setting up python3-pscheduler (5.1.1~a1.0~20240624164801-1) ...
/usr/lib/python3/dist-packages/pscheduler/mtu.py:13: SyntaxWarning: invalid escape sequence '\s'
  hop_match = re.compile("^\s*[0-9]+\??:")
/usr/lib/python3/dist-packages/pscheduler/ping.py:24: SyntaxWarning: invalid escape sequence '\s'
  "\s+from (.*):"
/usr/lib/python3/dist-packages/pscheduler/sinumber.py:30: SyntaxWarning: invalid escape sequence '\.'
  si_regex = re.compile('^(-?[0-9]+(\.[0-9]+)?)\s*([kmgtpezy][i]?)?$')

and some others on ping.py

[laeti-tia]

@laeti-tia If we specify 1.6 as a dependency, will that be installed even if 1.7 is available? I'm thinking we should just stick to 1.6 for the bugfix and save the upgrade for the next feature release.

We'll need to add an APT configuration file to make it work, because the version number is lower. That can be done with the following content in /etc/apt/preferences.d/99-perfsonar-jq:

Package: jq libjq1
Pin: release perfsonar-5.1*
Pin-Priority: 510

And use the latest changes pushed to the branch, see 0f55ab6

[mfeit-internet2]

With the completion of #1445, 5.2 will have jq 1.7, so the patch problem goes away and U24 can use the version provided by the distro.

There is now a functioning build on U24, so I'm calling this good.