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Annotation of dietlibc/dietfeatures.h, revision 1.43

1.4       fefe        1: #ifndef _DIETFEATURES_H
                      2: #define _DIETFEATURES_H
1.1       cvs         3: 
                      4: /* feel free to comment some of these out to reduce code size */
                      5: 
1.13      fefe        6: #define WANT_FLOATING_POINT_IN_PRINTF
                      7: #define WANT_FLOATING_POINT_IN_SCANF
1.12      fefe        8: #define WANT_CHARACTER_CLASSES_IN_SCANF
1.1       cvs         9: #define WANT_NULL_PRINTF
1.24      fefe       10: #define WANT_LONGLONG_PRINTF
1.42      olaf       11: #define WANT_LONGLONG_SCANF
1.1       cvs        12: 
1.20      fefe       13: /* 128 or 2048 bytes buffer size? */
                     14: /* #define WANT_SMALL_STDIO_BUFS */
                     15: 
1.40      fefe       16: /* want fread to read() directly if size of data is larger than buffer?
                     17:  * This costs a few bytes but is worth it if the application is already
                     18:  * buffering. */
                     19: #define WANT_FREAD_OPTIMIZATION
                     20: 
1.34      fefe       21: /* this is only for meaningful for ttyname and sysconf_cpus so far */
1.40      fefe       22: #define SLASH_PROC_OK
1.1       cvs        23: 
                     24: /* use errno_location instead of errno */
1.20      fefe       25: #define WANT_THREAD_SAFE
1.1       cvs        26: 
1.35      olaf       27: /* make the startcode, etc. dynamic aware ({con,de}structors) */
1.38      olaf       28: /* #define WANT_DYNAMIC */
1.1       cvs        29: 
                     30: /* do you want smaller or faster string routines? */
1.2       fefe       31: /* #define WANT_FASTER_STRING_ROUTINES */
1.1       cvs        32: 
1.43    ! fefe       33: /* define this to have strncpy zero-fill and not just zero-terminate the
        !            34:  * string */
        !            35: /* #define WANT_FULL_POSIX_COMPAT */
        !            36: 
1.16      fefe       37: /* read the comment in lib/strncat.c for an explanation */
1.17      fefe       38: /* #define WANT_NON_COMPLIANT_STRNCAT */
1.16      fefe       39: 
1.4       fefe       40: #define WANT_LINKER_WARNINGS
                     41: 
1.7       fefe       42: /* you need to define this if you want to run your programs with large
1.31      fefe       43:  * file support on kernel 2.2 or 2.0 */
1.7       fefe       44: #define WANT_LARGEFILE_BACKCOMPAT
                     45: 
1.8       fefe       46: /* do you want localtime(3) to read /etc/localtime?
                     47:  * Needed for daylight saving time etc. */
                     48: #define WANT_TZFILE_PARSER
1.1       cvs        49: 
1.21      fefe       50: /* do you want the DNS routines to parse and use "domain" and "search"
                     51:  * lines from /etc/resolv.conf?  Normally not used on boot floppies and
                     52:  * embedded environments. */
                     53: #define WANT_FULL_RESOLV_CONF
                     54: 
1.27      fefe       55: /* do you want gethostbyname and friends to consult /etc/hosts? */
                     56: #define WANT_ETC_HOSTS
                     57: 
1.29      fefe       58: /* do you want math functions high precision rather than fast/small? */
                     59: #define WANT_HIGH_PRECISION_MATH
                     60: 
                     61: /* do you want support for matherr? */
                     62: #define WANT_MATHERR
                     63: 
1.30      fefe       64: /* do you want crypt(3) to use MD5 if the salt starts with "$1$"? */
                     65: #define WANT_CRYPT_MD5
                     66: 
1.32      fefe       67: /* do you want diet to include a safeguard dependency to make linking
                     68:  * against glibc fail? */
                     69: #define WANT_SAFEGUARD
1.38      olaf       70: 
                     71: /* dy you want that malloc(0) return a pointer to a "zero-length" object
                     72:  * that is realloc-able; means realloc(..,size) gives a NEW object (like a
                     73:  * call to malloc(size)).
                     74:  * WARNING: this violates C99 */
                     75: /* #define WANT_MALLOC_ZERO */
                     76: 
1.32      fefe       77: 
1.1       cvs        78: /* stop uncommenting here ;-) */
                     79: #ifndef WANT_FASTER_STRING_ROUTINES
                     80: #define WANT_SMALL_STRING_ROUTINES
1.4       fefe       81: #endif
                     82: 
1.22      fefe       83: #ifdef WANT_THREAD_SAFE
                     84: #define errno (*__errno_location())
1.23      fefe       85: #define _REENTRANT
1.22      fefe       86: #endif
                     87: 
1.33      olaf       88: #ifdef __DYN_LIB
1.39      olaf       89: /* with shared libraries you MUST have a dynamic aware startcode */
1.33      olaf       90: #ifndef WANT_DYNAMIC
                     91: #define WANT_DYNAMIC
1.35      olaf       92: #endif
                     93: /* saveguard crashes with shared objects ... */
                     94: #ifdef WANT_SAFEGUARD
                     95: #undef WANT_SAFEGUARD
1.33      olaf       96: #endif
                     97: #endif
                     98: 
1.1       cvs        99: #endif