[PATCH 04/39] Check Clang 12 for __builtin_complex

[Sam James]

"H.J. Lu" <hjl.tools@gmail.com> writes:

> Since __builtin_complex was added to Clang 12, support __builtin_complex
> for Clang 12.

Yes, done in 6c18f7db73a08f1ae39a76a86b414c5b0c24ee86, specifically for
glibc, it seems.

>
> Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
> ---
>  math/complex.h | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Reviewed-by: Sam James <sam@gentoo.org>

>
> diff --git a/math/complex.h b/math/complex.h
> index 29702f4ad4..96195387f1 100644
> --- a/math/complex.h
> +++ b/math/complex.h
> @@ -52,7 +52,8 @@ __BEGIN_DECLS
>  #undef I
>  #define I _Complex_I
>  
> -#if defined __USE_ISOC11 && __GNUC_PREREQ (4, 7)
> +#if defined __USE_ISOC11 \
> +    && (__GNUC_PREREQ (4, 7) || __glibc_clang_prereq (12, 0))
>  /* Macros to expand into expression of specified complex type.  */
>  # define CMPLX(x, y) __builtin_complex ((double) (x), (double) (y))
>  # define CMPLXF(x, y) __builtin_complex ((float) (x), (float) (y))