cmake/Tests/CompileFeatures/genex_test.c

#ifndef EXPECT_C_STATIC_ASSERT
#  error EXPECT_C_STATIC_ASSERT not defined
#endif
#ifndef EXPECT_C_FUNCTION_PROTOTYPES
#  error EXPECT_C_FUNCTION_PROTOTYPES not defined
#endif
#ifndef EXPECT_C_RESTRICT
#  error EXPECT_C_RESTRICT not defined
#endif

#if !HAVE_C_STATIC_ASSERT
#  if EXPECT_C_STATIC_ASSERT
#    error "Expect c_static_assert feature"
#  endif
#else
#  if !EXPECT_C_STATIC_ASSERT
#    error "Expect no c_static_assert feature"
#  endif
#endif

#if !HAVE_C_FUNCTION_PROTOTYPES
#  if EXPECT_C_FUNCTION_PROTOTYPES
#    error Expect c_function_prototypes support
#  endif
#else
#  if !EXPECT_C_FUNCTION_PROTOTYPES
#    error Expect no c_function_prototypes support
#  endif
#endif

#if !HAVE_C_RESTRICT
#  if EXPECT_C_RESTRICT
#    error Expect c_restrict support
#  endif
#else
#  if !EXPECT_C_RESTRICT
#    error Expect no c_restrict support
#  endif
#endif

int main()
{
}