dnsdist: Remove autotools

[pieterlexis]

Short description

As part of removing some technical debt, this PR removes the possibility to build dnsdist using autotools.

Draft PR to iron out all the CI issues.

Checklist

I have:

• read the CONTRIBUTING.md document
• read and accepted the Developer Certificate of Origin document, including the AI Policy, and added a "Signed-off-by" to my commits
• compiled this code
• tested this code
• included documentation (including possible behaviour changes)
• documented the code
• added or modified regression test(s)
• added or modified unit test(s)

[omoerbeek]

From build_and_test_all.yml:

env:
  ...
  BUILDER_VERSION: '0.0.0-git1'
  ...

The codeql-analysis.yml workflow does not seem to have anything like that.

[pieterlexis]

I wonder why the codeql one does not have that and it does work for the autotools build.

[rgacogne]

Ah, looks like we might have to add python-yaml to the oss-fuzz environment, or perhaps disable YAML support there?

[pieterlexis]

Ah, looks like we might have to add python-yaml to the oss-fuzz environment, or perhaps disable YAML support there?

I think we should keep yaml in the fuzz build, should we ever want to fuzz the parser?

[rgacogne]

That requires building the Rust-based static library, so we need a Rust compiler. So perhaps it makes sense to not do that for now, and cross that bridge if we decide to fuzz serde (which would probably not happen in dnsdist anyway)?

[pieterlexis]

you're right, let's disable it.

[rgacogne]

google/oss-fuzz#15546 will help with the fuzzing issues, and I opened pieterlexis#18 to simplify a bit the handling of dnsdist's fuzzing targets.

[coveralls]

Coverage Report for CI Build 26573471660

Coverage increased (+4.0%) to 71.023%

Details

• Coverage increased (+4.0%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 104 coverage regressions across 15 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

104 previously-covered lines in 15 files lost coverage.

Top 10 Files by Coverage Loss	Lines Losing Coverage	Coverage
pdns/snmp-agent.cc	32	63.64%
pdns/dnsdistdist/dnsdist-snmp.cc	28	55.29%
pdns/recursordist/test-syncres_cc1.cc	8	80.08%
pdns/dnsdistdist/dnsdist-carbon.cc	7	59.8%
modules/godbcbackend/sodbc.cc	4	69.31%
pdns/auth-secondarycommunicator.cc	4	58.03%
pdns/communicator.cc	3	63.46%
pdns/dnsdistdist/dnsdist-healthchecks.cc	3	54.55%
pdns/iputils.cc	3	58.52%
pdns/logging.cc	3	80.23%

---

Coverage Stats

Relevant Lines:	170516
Covered Lines:	132676
Line Coverage:	77.81%
Relevant Branches:	81426
Covered Branches:	46262
Branch Coverage:	56.81%
Branches in Coverage %:	Yes
Coverage Strength:	6331574.7 hits per line

---

💛 - Coveralls

[rgacogne]

Wonderful!