diff options
| author | Dag-Erling Smørgrav <des@FreeBSD.org> | 2022-12-14 00:43:10 +0000 |
|---|---|---|
| committer | Dag-Erling Smørgrav <des@FreeBSD.org> | 2022-12-14 00:43:10 +0000 |
| commit | cc16bfc34e07fede47a989d9552413c7b4d8e78e (patch) | |
| tree | ee1329d113b0e03780f359d2c31e5106b872353e /private.h | |
| parent | 5644220527212c50e368d67cdf927f7f854b03af (diff) | |
Import tzcode 2022fvendor/tzcode/tzcode2022f
Diffstat (limited to 'private.h')
| -rw-r--r-- | private.h | 110 |
1 files changed, 67 insertions, 43 deletions
diff --git a/private.h b/private.h index 9c31ec5434f2..18f6a055ad15 100644 --- a/private.h +++ b/private.h @@ -17,6 +17,15 @@ ** Thank you! */ +/* Define true, false and bool if they don't work out of the box. */ +#if __STDC_VERSION__ < 199901 +# define true 1 +# define false 0 +# define bool int +#elif __STDC_VERSION__ < 202311 +# include <stdbool.h> +#endif + /* ** zdump has been made independent of the rest of the time ** conversion package to increase confidence in the verification it provides. @@ -54,9 +63,25 @@ # define HAVE_GENERIC (201112 <= __STDC_VERSION__) #endif +#if !defined HAVE_GETRANDOM && defined __has_include +# if __has_include(<sys/random.h>) +# define HAVE_GETRANDOM true +# else +# define HAVE_GETRANDOM false +# endif +#endif +#ifndef HAVE_GETRANDOM +# define HAVE_GETRANDOM (2 < __GLIBC__ + (25 <= __GLIBC_MINOR__)) +#endif + +#if !defined HAVE_GETTEXT && defined __has_include +# if __has_include(<libintl.h>) +# define HAVE_GETTEXT true +# endif +#endif #ifndef HAVE_GETTEXT -# define HAVE_GETTEXT 0 -#endif /* !defined HAVE_GETTEXT */ +# define HAVE_GETTEXT false +#endif #ifndef HAVE_INCOMPATIBLE_CTIME_R # define HAVE_INCOMPATIBLE_CTIME_R 0 @@ -74,8 +99,8 @@ # define HAVE_POSIX_DECLS 1 #endif -#ifndef HAVE_STDBOOL_H -# define HAVE_STDBOOL_H (199901 <= __STDC_VERSION__) +#ifndef HAVE_SETENV +# define HAVE_SETENV 1 #endif #ifndef HAVE_STRDUP @@ -90,17 +115,23 @@ # define HAVE_SYMLINK 1 #endif /* !defined HAVE_SYMLINK */ +#if !defined HAVE_SYS_STAT_H && defined __has_include +# if !__has_include(<sys/stat.h>) +# define HAVE_SYS_STAT_H false +# endif +#endif #ifndef HAVE_SYS_STAT_H -# define HAVE_SYS_STAT_H 1 -#endif /* !defined HAVE_SYS_STAT_H */ +# define HAVE_SYS_STAT_H true +#endif +#if !defined HAVE_UNISTD_H && defined __has_include +# if !__has_include(<unistd.h>) +# define HAVE_UNISTD_H false +# endif +#endif #ifndef HAVE_UNISTD_H -# define HAVE_UNISTD_H 1 -#endif /* !defined HAVE_UNISTD_H */ - -#ifndef HAVE_UTMPX_H -# define HAVE_UTMPX_H 1 -#endif /* !defined HAVE_UTMPX_H */ +# define HAVE_UNISTD_H true +#endif #ifndef NETBSD_INSPIRED # define NETBSD_INSPIRED 1 @@ -118,15 +149,17 @@ /* Enable strtoimax on pre-C99 Solaris 11. */ #define __EXTENSIONS__ 1 -/* To avoid having 'stat' fail unnecessarily with errno == EOVERFLOW, - enable large files on GNUish systems ... */ +/* On GNUish systems where time_t might be 32 or 64 bits, use 64. + On these platforms _FILE_OFFSET_BITS must also be 64; otherwise + setting _TIME_BITS to 64 does not work. The code does not + otherwise rely on _FILE_OFFSET_BITS being 64, since it does not + use off_t or functions like 'stat' that depend on off_t. */ #ifndef _FILE_OFFSET_BITS # define _FILE_OFFSET_BITS 64 #endif -/* ... and on AIX ... */ -#define _LARGE_FILES 1 -/* ... and enable large inode numbers on Mac OS X 10.5 and later. */ -#define _DARWIN_USE_64_BIT_INODE 1 +#if !defined _TIME_BITS && _FILE_OFFSET_BITS == 64 +# define _TIME_BITS 64 +#endif /* ** Nested includes @@ -157,7 +190,7 @@ #undef tzalloc #undef tzfree -#include <sys/types.h> /* for time_t */ +#include <stddef.h> #include <string.h> #include <limits.h> /* for CHAR_BIT et al. */ #include <stdlib.h> @@ -234,6 +267,9 @@ ** previously-included files. glibc 2.1 and Solaris 10 and later have ** stdint.h, even with pre-C99 compilers. */ +#if !defined HAVE_STDINT_H && defined __has_include +# define HAVE_STDINT_H true /* C23 __has_include implies C99 stdint.h. */ +#endif #ifndef HAVE_STDINT_H # define HAVE_STDINT_H \ (199901 <= __STDC_VERSION__ \ @@ -360,13 +396,6 @@ typedef unsigned long uintmax_t; # endif #endif -#ifndef INT32_MAX -# define INT32_MAX 0x7fffffff -#endif /* !defined INT32_MAX */ -#ifndef INT32_MIN -# define INT32_MIN (-1 - INT32_MAX) -#endif /* !defined INT32_MIN */ - #ifndef SIZE_MAX # define SIZE_MAX ((size_t) -1) #endif @@ -623,14 +652,6 @@ time_t time2posix_z(timezone_t, time_t) ATTRIBUTE_PURE; ** Finally, some convenience items. */ -#if HAVE_STDBOOL_H -# include <stdbool.h> -#else -# define true 1 -# define false 0 -# define bool int -#endif - #define TYPE_BIT(type) (sizeof(type) * CHAR_BIT) #define TYPE_SIGNED(type) (((type) -1) < 0) #define TWOS_COMPLEMENT(t) ((t) ~ (t) 0 < 0) @@ -708,16 +729,19 @@ time_t time2posix_z(timezone_t, time_t) ATTRIBUTE_PURE; #endif #ifdef DEBUG -# define UNREACHABLE() abort() -#elif 4 < __GNUC__ + (5 <= __GNUC_MINOR__) -# define UNREACHABLE() __builtin_unreachable() -#elif defined __has_builtin -# if __has_builtin(__builtin_unreachable) -# define UNREACHABLE() __builtin_unreachable() +# undef unreachable +# define unreachable() abort() +#elif !defined unreachable +# ifdef __has_builtin +# if __has_builtin(__builtin_unreachable) +# define unreachable() __builtin_unreachable() +# endif +# elif 4 < __GNUC__ + (5 <= __GNUC_MINOR__) +# define unreachable() __builtin_unreachable() +# endif +# ifndef unreachable +# define unreachable() ((void) 0) # endif -#endif -#ifndef UNREACHABLE -# define UNREACHABLE() ((void) 0) #endif /* |