[devin-ai-integration]

Related Issue(s)
Has Unit Tests (y/n)	y
Documentation Included (y/n)	n

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Change Description

• builder.py: get_cmake_args()'s needed-settings list derived from Build.CACHE_SETTING_MAP (was a byte-identical duplicate minus PROJECT_SOURCE_DIR); private join/split helper pair for the FPRIME_LIBRARY_LOCATIONS ;-separated form (join at get_cmake_args, splits at _load_settings_from_cache and cmake.get_include_locations); one _read_locations_file helper replacing the near-identical _load_build_cache_locations/_load_source_locations bodies.
• cmake.py _read_cache: memo now keyed by resolved build_dir and invalidated per-dir in both cmake_refresh_cache branches — previously the memo was returned regardless of which build dir produced it (real bug when one process touches normal + UT caches).

Rationale

Single source of truth for three verified duplications; fixes the latent cross-build-dir cache bug (WP4 of 9, stacked on #19). Emitted cmake args and exception messages unchanged.

Testing/Review Recommendations

New two-dir cache test in test_cmake.py proves per-dir caching. Suite: 161 passed; black clean. The fpp/common.py locs-file split intentionally stays (moves with fpp in WP8).

Future Work

WP5–WP9 of the series.

Pushed by Devin AI

Link to Devin session: https://nasa-jpl-demo.devinenterprise.com/sessions/bba39c1277854bf8a1fd63a094f20e24
Requested by: @thomas-bc-autobot

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[devin-ai-integration]

Original prompt from thomas.boyer.chammard

I want this session to be a large effort to make fprime-tools more maintainable and cleaner code/less technical debt. Please make a plan to study that and deliver a master plan. Allocate subagent to find areas that can be improved, then more subagents to study it in detail and make a plan, then iterate on the plan with other review agents until the review agent and planner agent agree on an approved plan. Once the approved plan is done, have other implementer agents implement the plan, and review agents that build and test the result. Iterate until everyone agrees the code is correct and an improvement. Use subagents, high importance goals:

• CLI and external APIs should ideally be left unchanged, or backwards compatibility layer left in
• The less line of code changes, the easier the review. But if lots of LOC for high value simplification, it is ok.

Let’s go! Don’t stop, keep iterating until my goals are met.

[devin-ai-integration]

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.