diff options
| author |  Chloe Kudryavtsev <code@toast.bunkerlabs.net> | 2023-05-13 12:43:58 -0400 |
|---|---|---|
| committer | Chloe Kudryavtsev <code@toast.bunkerlabs.net> | 2023-05-13 12:43:58 -0400 |
| commit | 71026ea3ecb33b923f513f1e36cedbd89d6b7dc4 (patch) | |
| tree | 164885af945a25fef0f63303263522848238285d /src/polyfill.h | |
| parent | better tests that also serve as temporary docs (diff) | |
add TM_GMTOFF and TM_ZONE
I might want to be able to write to them, but that seems very
error-prone.
Diffstat (limited to 'src/polyfill.h')
| -rw-r--r-- | src/polyfill.h | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/src/polyfill.h b/src/polyfill.h index 5fa72ac..ecc3a0d 100644 --- a/src/polyfill.h +++ b/src/polyfill.h @@ -18,5 +18,23 @@ const char *janet_optcbytes(const Janet *argv, int32_t argc, int32_t n, const ch static const int32_t CNAME##_sourceline_ = __LINE__; \ Janet CNAME (int32_t argc, Janet *argv) #endif // !defined(JANET_NO_SOURCEMAPS) - #endif // JANET_VERSION_MAJOR < 2 && JANET_VERSION_MINOR < 28 + +// === + +// public domain code from +// https://github.com/eggert/tz.git + +/* Infer TM_ZONE on systems where this information is known, but suppress + guessing if NO_TM_ZONE is defined. Similarly for TM_GMTOFF. */ +#if (defined __GLIBC__ \ + || defined __tm_zone /* musl */ \ + || defined __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ \ + || (defined __APPLE__ && defined __MACH__)) +# if !defined TM_GMTOFF && !defined NO_TM_GMTOFF +# define TM_GMTOFF tm_gmtoff +# endif +# if !defined TM_ZONE && !defined NO_TM_ZONE +# define TM_ZONE tm_zone +# endif +#endif |