For decades, software portability has been a holy grail. The classic tools—autotools, CMake find_package, or Java’s “WORA” (Write Once, Run Anywhere)—were reactive. They told you at compile time if something was missing. The old guard of portability analyzers (e.g., ldd, depends.exe, scanelf) answered one question: “Does this binary have unresolved symbols?”
| Tool | Old Style | New Portability Analyzer |
|------|-----------|--------------------------|
| scan-build / Clang Static Analyzer | Finds memory bugs | + Predicts cross-target behavioral differences |
| abi-compliance-checker | Binary API/ABI changes only | + Semantic & environmental variance |
| Docker / podman | Tests one container at a time | + Matrix-driven differential analysis |
| Valgrind | Runtime error detection | + Cross-environment replay & comparison |
| Cross (Rust) | Cross-compiles | + Behavioral verification on emulated targets | portability analyzer new
| Metric | Description | |--------|-------------| | P-Score (0–100) | Overall portability likelihood across defined environment matrix. | | Coverage Gap | % of target environments not testable due to missing deps or arch. | | API Risk Index | Number of non-portable calls, weighted by cross-platform variance. | | Behavioral Stability | % of execution traces that produce identical observable outcomes. | | Remediation Effort | Estimated developer hours to achieve P-Score ≥90. | Beyond “Write Once, Run Anywhere”: The New Generation