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Switch CodeQL C/C++ analysis to build-mode: none to improve file coverage from ~3.01k to all ~3.35k C files in the repository. This leverages GitHub's generally available no-build scanning for C/C++ (announced Oct 2025). Changes: - Add build-mode: none for c-cpp language in CodeQL init step - Remove build step and related setup (no longer needed) - Keep dependency installation to ensure headers are available - Python and Actions scanning unchanged Trade-offs: - Generated code (flex/bison in build directories) won't be scanned - Slightly less accurate for complex macro-heavy code (acceptable given header availability) This addresses issue OSGeo#6529.
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For reference, that is what I tried a couple months ago: echoix#569 |
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Motivation
CodeQL C/C++ scanning can now be performed without builds (GA as of Oct 2025). The current setup uses a build step, runs only on Linux, and analyzes ~3.01k out of ~3.35k C files (~340 files missing). This change improves coverage by scanning all source files without requiring a build.
See: #6529
What Changed
build-mode: nonefor C/C++ language in CodeQL init stepWhy This Approach
Trade-offs
lib/db/sqlpandraster/r.mapcalc) are in build directories, not source. This is acceptable as they're generated code.Validation
How to Verify
After merge, check the CodeQL status page:
References
Addresses #6529