diff options
| author | Corinna Vinschen <corinna@vinschen.de> | 2023-08-02 17:52:27 +0300 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2023-08-02 17:56:24 +0300 |
| commit | 290b56a87947620f171f65190616116fc1e0082c (patch) | |
| tree | c0448d91b686953d262b622adb5ea3b2049f3411 /newlib | |
| parent | 8fbbc668a01db50c3735d396f6e021940f7b3834 (diff) | |
sys/features.h: Define _ISOC2X_SOURCE and __ISO_C_VISIBLE
Add feature test for C2X code. Add matching definitions
_ISOC2X_SOURCE for requesting sources and __ISO_C_VISIBLE
to be used in headers.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Diffstat (limited to 'newlib')
| -rw-r--r-- | newlib/libc/include/sys/features.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/newlib/libc/include/sys/features.h b/newlib/libc/include/sys/features.h index 45476ce4a..a7d4bc52d 100644 --- a/newlib/libc/include/sys/features.h +++ b/newlib/libc/include/sys/features.h @@ -87,6 +87,9 @@ extern "C" { * _ISOC11_SOURCE or gcc -std=c11 or g++ -std=c++11 * ISO C11 * + * _ISOC2x_SOURCE or gcc -std=c2x or g++ -std=c++20 + * ISO C11 + * * _ATFILE_SOURCE (implied by _POSIX_C_SOURCE >= 200809L) * "at" functions * @@ -114,6 +117,8 @@ extern "C" { #define _ISOC99_SOURCE 1 #undef _ISOC11_SOURCE #define _ISOC11_SOURCE 1 +#undef _ISOC2X_SOURCE +#define _ISOC2X_SOURCE 1 #undef _POSIX_SOURCE #define _POSIX_SOURCE 1 #undef _POSIX_C_SOURCE @@ -215,6 +220,11 @@ extern "C" { * g++ -std=c++11 or newer (on by default since GCC 6), or with * _ISOC11_SOURCE. * + * __ISO_C_VISIBLE >= 2020 + * ISO C2x; enabled with gcc -std=c2x or newer, + * g++ -std=c++20 or newer, or with + * _ISOC2X_SOURCE. + * * __ATFILE_VISIBLE * "at" functions; enabled by default, with _ATFILE_SOURCE, * _POSIX_C_SOURCE >= 200809L, or _XOPEN_SOURCE >= 700. @@ -261,7 +271,10 @@ extern "C" { #define __GNU_VISIBLE 0 #endif -#if defined(_ISOC11_SOURCE) || \ +#if defined(_ISOC2X_SOURCE) || \ + (__STDC_VERSION__ - 0) > 201710L || (__cplusplus - 0) >= 202002L +#define __ISO_C_VISIBLE 2020 +#elif defined(_ISOC11_SOURCE) || \ (__STDC_VERSION__ - 0) >= 201112L || (__cplusplus - 0) >= 201103L #define __ISO_C_VISIBLE 2011 #elif defined(_ISOC99_SOURCE) || (_POSIX_C_SOURCE - 0) >= 200112L || \ |