CMake/Modules/CMakeCCompilerId.c.in

#ifdef __cplusplus
# error "A C++ compiler has been selected for C."
#endif

#if defined(__18CXX)
# define ID_VOID_MAIN
#endif
#if defined(__CLASSIC_C__)
/* cv-qualifiers did not exist in K&R C */
# define const
# define volatile
#endif

@CMAKE_C_COMPILER_ID_CONTENT@

/* Construct the string literal in pieces to prevent the source from
   getting matched.  Store it in a pointer rather than an array
   because some compilers will just produce instructions to fill the
   array rather than assigning a pointer to a static array.  */
char const* info_compiler = "INFO" ":" "compiler[" COMPILER_ID "]";
#ifdef SIMULATE_ID
char const* info_simulate = "INFO" ":" "simulate[" SIMULATE_ID "]";
#endif

#ifdef __QNXNTO__
char const* qnxnto = "INFO" ":" "qnxnto[]";
#endif

#if defined(__CRAYXE) || defined(__CRAYXC)
char const *info_cray = "INFO" ":" "compiler_wrapper[CrayPrgEnv]";
#endif

@CMAKE_C_COMPILER_ID_PLATFORM_CONTENT@
@CMAKE_C_COMPILER_ID_ERROR_FOR_TEST@

#if !defined(__STDC__) && !defined(__clang__)
# if defined(_MSC_VER) || defined(__ibmxl__) || defined(__IBMC__)
#  define C_DIALECT "90"
# else
#  define C_DIALECT
# endif
#elif __STDC_VERSION__ > 201710L
# define C_DIALECT "23"
#elif __STDC_VERSION__ >= 201710L
# define C_DIALECT "17"
#elif __STDC_VERSION__ >= 201000L
# define C_DIALECT "11"
#elif __STDC_VERSION__ >= 199901L
# define C_DIALECT "99"
#else
# define C_DIALECT "90"
#endif
const char* info_language_dialect_default =
  "INFO" ":" "dialect_default[" C_DIALECT "]";

/*--------------------------------------------------------------------------*/

#ifdef ID_VOID_MAIN
void main() {}
#else
# if defined(__CLASSIC_C__)
int main(argc, argv) int argc; char *argv[];
# else
int main(int argc, char* argv[])
# endif
{
  int require = 0;
  require += info_compiler[argc];
  require += info_platform[argc];
  require += info_arch[argc];
#ifdef COMPILER_VERSION_MAJOR
  require += info_version[argc];
#endif
#ifdef COMPILER_VERSION_INTERNAL
  require += info_version_internal[argc];
#endif
#ifdef SIMULATE_ID
  require += info_simulate[argc];
#endif
#ifdef SIMULATE_VERSION_MAJOR
  require += info_simulate_version[argc];
#endif
#if defined(__CRAYXE) || defined(__CRAYXC)
  require += info_cray[argc];
#endif
  require += info_language_dialect_default[argc];
  (void)argv;
  return require;
}
#endif