Feature & Capability Checks

Xmake can probe the target toolchain at configure time for:

• Does a compiler flag work? (check_cflags, check_cxxflags)
• Does a C/C++ function exist? (has_cfuncs, has_cxxfuncs)
• Does a type exist? (has_ctypes, has_cxxtypes)
• Does an include exist? (has_cincludes, has_cxxincludes)
• Does an arbitrary snippet compile? (check_csnippets, check_cxxsnippets)
• Does a C++ feature work? (has_features("cxx_constexpr"), …)
• Is a tool/program on PATH? (find_tool, find_program)
• Is a library findable? (find_package)

Use these to branch configuration on capability instead of hard-coding if is_plat(...).

In an option (the declarative form)

Options have a short-hand for capability probes — if the probe succeeds, the option is automatically enabled.