Annotation of dietlibc/dietfeatures.h, revision 1.52
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
1.52 ! sanjiyan 10: /* #define WANT_ERROR_PRINTF */
1.24 fefe 11: #define WANT_LONGLONG_PRINTF
1.42 olaf 12: #define WANT_LONGLONG_SCANF
1.1 cvs 13:
1.20 fefe 14: /* 128 or 2048 bytes buffer size? */
15: /* #define WANT_SMALL_STDIO_BUFS */
16:
1.40 fefe 17: /* want fread to read() directly if size of data is larger than buffer?
18: * This costs a few bytes but is worth it if the application is already
19: * buffering. */
20: #define WANT_FREAD_OPTIMIZATION
21:
1.34 fefe 22: /* this is only for meaningful for ttyname and sysconf_cpus so far */
1.40 fefe 23: #define SLASH_PROC_OK
1.1 cvs 24:
25: /* use errno_location instead of errno */
1.20 fefe 26: #define WANT_THREAD_SAFE
1.1 cvs 27:
1.35 olaf 28: /* make the startcode, etc. dynamic aware ({con,de}structors) */
1.38 olaf 29: /* #define WANT_DYNAMIC */
1.1 cvs 30:
31: /* do you want smaller or faster string routines? */
1.2 fefe 32: /* #define WANT_FASTER_STRING_ROUTINES */
1.1 cvs 33:
1.43 fefe 34: /* define this to have strncpy zero-fill and not just zero-terminate the
35: * string */
36: /* #define WANT_FULL_POSIX_COMPAT */
37:
1.16 fefe 38: /* read the comment in lib/strncat.c for an explanation */
1.17 fefe 39: /* #define WANT_NON_COMPLIANT_STRNCAT */
1.16 fefe 40:
1.47 leitner 41: /* on i386, Linux has an alternate syscall method since 2002/12/16 */
42: /* on my Athlon XP, it is twice as fast, but it's only in kernel 2.5 */
1.48 leitner 43: #define WANT_SYSENTER
1.47 leitner 44:
1.4 fefe 45: #define WANT_LINKER_WARNINGS
46:
1.7 fefe 47: /* you need to define this if you want to run your programs with large
1.31 fefe 48: * file support on kernel 2.2 or 2.0 */
1.7 fefe 49: #define WANT_LARGEFILE_BACKCOMPAT
50:
1.8 fefe 51: /* do you want localtime(3) to read /etc/localtime?
52: * Needed for daylight saving time etc. */
53: #define WANT_TZFILE_PARSER
1.1 cvs 54:
1.21 fefe 55: /* do you want the DNS routines to parse and use "domain" and "search"
56: * lines from /etc/resolv.conf? Normally not used on boot floppies and
57: * embedded environments. */
58: #define WANT_FULL_RESOLV_CONF
59:
1.45 fefe 60: /* do you want IPv6 transport support in the DNS resolver? */
61: #define WANT_IPV6_DNS
62:
1.27 fefe 63: /* do you want gethostbyname and friends to consult /etc/hosts? */
64: #define WANT_ETC_HOSTS
65:
1.46 fefe 66: /* do you want gethostbyname to understand dotted decimal IP numbers
67: * directly and not try to resolve them? */
68: #define WANT_INET_ADDR_DNS
69:
1.29 fefe 70: /* do you want math functions high precision rather than fast/small? */
71: #define WANT_HIGH_PRECISION_MATH
72:
73: /* do you want support for matherr? */
74: #define WANT_MATHERR
75:
1.30 fefe 76: /* do you want crypt(3) to use MD5 if the salt starts with "$1$"? */
77: #define WANT_CRYPT_MD5
78:
1.32 fefe 79: /* do you want diet to include a safeguard dependency to make linking
1.45 fefe 80: * against glibc fail? This may fail with older binutils. */
1.32 fefe 81: #define WANT_SAFEGUARD
1.38 olaf 82:
1.49 leitner 83: /* this enables an experimental DNS hack of mine.
84: * See http://www.fefe.de/ipv6pnpdns.html */
1.50 leitner 85: // #define WANT_IPV6_PLUGPLAY_DNS
1.49 leitner 86:
1.38 olaf 87: /* dy you want that malloc(0) return a pointer to a "zero-length" object
88: * that is realloc-able; means realloc(..,size) gives a NEW object (like a
89: * call to malloc(size)).
90: * WARNING: this violates C99 */
91: /* #define WANT_MALLOC_ZERO */
92:
1.32 fefe 93:
1.1 cvs 94: /* stop uncommenting here ;-) */
95: #ifndef WANT_FASTER_STRING_ROUTINES
96: #define WANT_SMALL_STRING_ROUTINES
1.4 fefe 97: #endif
98:
1.22 fefe 99: #ifdef WANT_THREAD_SAFE
1.44 fefe 100: #ifndef __ASSEMBLER__
1.22 fefe 101: #define errno (*__errno_location())
1.23 fefe 102: #define _REENTRANT
1.44 fefe 103: #endif
1.22 fefe 104: #endif
105:
1.33 olaf 106: #ifdef __DYN_LIB
1.39 olaf 107: /* with shared libraries you MUST have a dynamic aware startcode */
1.33 olaf 108: #ifndef WANT_DYNAMIC
109: #define WANT_DYNAMIC
1.35 olaf 110: #endif
111: /* saveguard crashes with shared objects ... */
112: #ifdef WANT_SAFEGUARD
113: #undef WANT_SAFEGUARD
1.33 olaf 114: #endif
115: #endif
116:
1.1 cvs 117: #endif
LinuxTV legacy CVS <linuxtv.org/cvs>