c11 —
ANSI (2011) C compiler
  
    | c11 | [ -pedantic]
      [-pedantic-errors]
      [-D_ANSI_SOURCE] [options
      ...] | 
Calls the C compiler (cc) with the given options, using a
  C language environment compatible with the ISO/IEC 9899:2011
  (“ISO C11”) specification.
This includes alignment specification
    (_Alignas specifier, _Alignof
    operator), the _Noreturn function specifier,
    type-generic expressions using the _Generic keyword,
    multi-threading support, improved unicode handling, anonymous structures and
    unions, static assertions, exclusive create-and-open mode for
    fopen(3), the
    quick_exit(3) function
    performing minimal cleanup, macros for construction of complex values.
The following options are available:
  - -pedantic
- Issue extra warnings defined by ANSI for use of non-ANSI features.
- -pedantic-errors
- Issue errors instead of warnings that normally would be presented by
      -pedantic.
- -D_ANSI_SOURCE
- Tell the system header file set to use an ANSI-conformant
      "clean" namespace.
c11 is a NetBSD extension.
c11 first appeared in NetBSD
  8.0.
Since c11 is a shell wrapper script to
  cc, compile errors are prefixed by “cc:”.