================ @@ -1076,13 +1076,11 @@ Language and Target-Independent Features Freestanding Builds ------------------- Passing the ``-ffreestanding`` flag causes Clang to build for a freestanding -(rather than a hosted) environment. The ``__STDC_HOSTED__`` predefined macro -will expand to ``0`` in a freestanding environment. In such an environment, -execution of the program may happen without an operating system and so a -startup function (e.g., ``main``) may not be automatically called, though file -scope objects which need to run startup code (constructors in C++, -``__attribute__((constructor))``, etc) are executed via implementation-defined -means such as ``__cxx_global_var_init``. +(rather than a hosted) environment. The flag has the following effects: + +* the ``__STDC_HOSTED__`` predefined macro will expand to ``0``, +* builtin functions are disabled (``-fno-builtins``), and +* unwind tables are disabled (``fno-asynchronous-unwind-tables -fno-unwind-tables``) ---------------- jhuber6 wrote:
Mention the `main` symbol being treated as a normal function? https://github.com/llvm/llvm-project/pull/132232 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
