all default latest experimental legacy sys bindist linux macos freebsd windows wasm gcc clang msvc static ndebug optimized relocatable gcc-4.9+ gcc-5+:gcc-4.9+ gcc-6+:gcc-5+ gcc-7+:gcc-6+ gcc-8+:gcc-7+ gcc-9+:gcc-8+ gcc-10+:gcc-9+ gcc-11+:gcc-10+ gcc-12+:gcc-11+ gcc-13+:gcc-12+ gcc-14+:gcc-13+ clang-3.7+ clang-3.8+:clang-3.7+ clang-3.9+:clang-3.8+ clang-4+:clang-3.9+ clang-5+:clang-4+ clang-6+:clang-5+ clang-7+:clang-6+ clang-8+:clang-7+ clang-9+:clang-8+ clang-10+:clang-9+ clang-11+:clang-10+ clang-12+:clang-11+ clang-13+:clang-12+ clang-14+:clang-13+ clang-15+:clang-14+ clang-16+:clang-15+ clang-17+:clang-16+ clang-18+:clang-17+ msvc-14+ msvc-14.1+:msvc-14+ msvc-14.2+:msvc-14.1+ msvc-14.3+:msvc-14.2+ msvc-15+:msvc-14.3+ msvc-15.1+:msvc-15+ msvc-15.2+:msvc-15.1+ msvc-15.3+:msvc-15.2+ msvc-15.4+:msvc-15.3+ msvc-15.5+:msvc-15.4+ msvc-15.6+:msvc-15.5+ msvc-15.7+:msvc-15.6+ msvc-15.8+:msvc-15.7+ msvc-15.9+:msvc-15.8+ msvc-16+:msvc-15.9+ msvc-16.1+:msvc-16+ msvc-16.2+:msvc-16.1+ msvc-16.3+:msvc-16.2+ msvc-16.4+:msvc-16.3+ msvc-16.5+:msvc-16.4+ msvc-16.6+:msvc-16.5+ msvc-16.7+:msvc-16.6+ msvc-16.8+:msvc-16.7+ msvc-16.9+:msvc-16.8+ msvc-16.10+:msvc-16.9+ msvc-16.11+:msvc-16.10+ msvc-17+:msvc-16.11+ msvc-17.1+:msvc-17+ msvc-17.2+:msvc-17.1+ msvc-17.3+:msvc-17.2+ msvc-17.4+:msvc-17.3+ msvc-17.5+:msvc-17.4+ msvc-17.6+:msvc-17.5+ msvc-17.7+:msvc-17.6+ msvc-17.8+:msvc-17.7+ msvc-17.9+:msvc-17.8+ msvc-17.10+:msvc-17.9+ host build2