Build Configuration Checks

Compile-time feature validation from noxtls_check_config.h.

Purpose

noxtls_check_config.h enforces consistency between feature flags set by build profiles (for example NOXTLS_FEATURE_TLS, NOXTLS_FEATURE_PKC, NOXTLS_FEATURE_AES_GCM) and stops invalid combinations at compile time using #error.

What It Validates

• Feature toggles are boolean (0 or 1)
• Core dependencies (for example TLS requires certs, PKC, encryption, hash, DRBG)
• Algorithm dependencies (for example AES mode/key-size flags require AES core)
• PKC dependencies (ECDSA and ECDH require ECC; X25519/X448/ED25519 require PKC)
• Profile constraints (for example crypto-only profile disables TLS/certs)

How To Use

• Set feature flags through CMake options/profile selection.
• Include noxtls_check_config.h in builds to fail fast on invalid combinations.
• Resolve any #error output by enabling required dependencies or disabling incompatible features.