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.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" This manpage is Copyright (C) 2006, Michael Kerrisk
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one.
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date. The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein. The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Japanese Version Copyright (c) 2006 Akihiro MOTOKI all rights reserved.
.\" Translated 2006-07-16, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\"
.\"WORD: feature test macro ǽޥ
.\"
.TH FEATURE_TEST_MACROS 7 2006-04-26 "Linux" "Linux Programmer's Manual"
.SH ̾
feature_test_macros \- ǽޥ
.SH
.nf
.B #include <features.h>
.SH
ǽޥ (feature test macro) ˤꡢץޤ
ץबѥ뤵ݤ˥ƥΥإåեˤ
椹뤳ȤǤ롣
εǽȤȡɸʤ褦ˤǤ
ܿΤ륢ץꥱΤΩġ
¾ΥޥȤȡǥեȤǤϸʤɸ
뤳ȤǤ롣
ʲ뵡ǽޥΤ줾Τʱƶǧˤϡ
إåե
.I <features.h>
Ĵ٤Ф褤
ǽޥǽˤϡ
֤إåե롼ɤˡ
ǽޥʤФʤʤ
¸ˤϡ
ѥ륳ޥɤǻꤹˡ
.RI ( "cc -DMACRO=value" )
ȡɤǤإå롼ɤ
ɬפʥޥˡ롣
Linux/glibc ϰʲεǽޥ᤹:
.TP
.B _POSIX_C_SOURCE
Υޥ 1 ȡإåե
POSIX.1-1990 ISO C (1990) ˽롣
199309 ʾͤȡ
POSIX.1b (ꥢ륿ĥ) ϢɲäǸ롣
199506 ʾͤȡ
POSIX.1c (å) ϢɲäǸ롣
200112 ȡ(XSI ĥ) POSIX.1-2001 ܻͤ
б롣
.TP
.B _POSIX_SOURCE
ΥޥѻͽǤ롣
Υޥȡͤ˴ؤ餺
.B _POSIX_C_SOURCE
1 ΤȤʤ롣
.TP
.B _XOPEN_SOURCE
ΥޥȡɤͤǤ⡢إåե
POSIX.1, POSIX.2, XPG4 ˽롣
500 ʾͤȡSUSv2 (UNIX 98) Ϣ
ɲäǸ롣
600 ʾͤȡ
SUSv3 (UNIX 03; POSIX.1-2001 ܻ + XSI ĥƱ)
Ϣ C 99 ǤɲäǸ롣
.TP
.B _XOPEN_SOURCE_EXTENDED
Υޥ 1 졢
.BR _XOPEN_SOURCE
ƤȡXPG4v2 UNIX ĥб롣
.TP
.B _ISOC99_SOURCE
ISO C (1990) C 99 ĥ롣
.TP
.B _LARGEFILE64_SOURCE
LFS (Large File Summit) ˤ
"ĥ (transitional extension)" Single UNIX Specification
ȤƵꤵ줿 API ˴ؤ
(http://ftp.sas.com/standards/large.file/ )
.TP
.B _FILE_OFFSET_BITS
Υޥ 64 ȡե I/O ȥե륷ƥ
Ϣ 32 ӥåǤδؿȥǡפϼưŪ 64ӥåǤ
Ѵ롣
ϡ32ӥåȥƥ礭ʥե (> 2Х) I/O
¹ԤݤΩġ
.TP
.B _BSD_SOURCE
Υޥ (ͤ˴ؤ餺) إåե
BSD ͳ롣
ޤΥޥȡƤʤɸब¸ߤˤ
BSD ͳͥ褹褦ˤʤ롣
.TP
.B _SVID_SOURCE
Υޥ (ͤ˴ؤ餺) إåե
System V ͳ
(SVID == System V Interface Definition;
.BR standards (7)
)
.TP
.B _GNU_SOURCE
Υޥ (ͤ˴ؤ餺) ʲΥޥΤ
ˤʤ:
.BR _BSD_SOURCE ,
.BR _SVID_SOURCE ,
.BR _LARGEFILE64_SOURCE ,
.BR _ISOC99_SOURCE ,
1999506
.BR _POSIX_C_SOURCE
600
.BR _XOPEN_SOURCE
ˡƼ GNU ͭγĥ롣
.PP
.BR gcc (1)
ưȡǥեȤ
.BR _BSD_SOURCE ,
.BR _SVID_SOURCE ,
.BR _POSIX_SOURCE ,
.BR POSIX_C_SOURCE =199506
롣
ġΥޥȡŪ줿
¾Υޥ̵Ȥʤ롣(㳰:
.BR POSIX_C_SOURCE
¾Ƥʤˤϡ
.BR POSIX_C_SOURCE
Ͼ 199506 롣
âѥ餬Ѥɸꤹ⡼ɤǵư줿
.RI ( -std=c99
ե饰) Ϥθ¤ǤϤʤ
.SH
POSIX.1 Ǥ
.BR _POSIX_C_SOURCE ,
.BR _POSIX_SOURCE ,
.BR _XOPEN_SOURCE
ꤵƤ롣
.BR _XOPEN_SOURCE_EXTENDED
XPG4v2 (̾ SUSv1) ǵꤵƤ
.BR _FILE_OFFSET_BITS
ϤɤɸǤꤵƤʤ
¾ΤĤμǺѤƤ롣
.BR _BSD_SOURCE ,
.BR _SVID_SOURCE ,
.BR _GNU_SOURCE
Linux (glibc) ͭǤ롣
.SH
.I <features.h>
Linux/glibc ͭΥإåեǤ롣
¾ΥƥˤƱͤŪΥե뤬뤬̤ϰ㤦̾Ǥ롣
Υإåեϡ¾Υإåեˤɬפ˱
ưŪ˥롼ɤ롣ǽޥѤ뤿
Ū˥롼ɤɬפϤʤ
|
