The synopsis previously stated that getopt requires _POSIX_C_SOURCE >= 2 || _XOPEN_SOURCE || _POSIX_SOURCE, but that would be impossible, since _POSIX_SOURCE is a synonym for _POSIX_C_SOURCE >= 1. getopt was introduced to POSIX in POSIX.2. The glibc headers correctly test for that version. Signed-off-by: Jonathan Nieder <jrnieder@xxxxxxxxx> --- Hi, I noticed this when trying to compile a program that uses getopt with _POSIX_SOURCE. Checking the headers, I see that unistd.h does not include getopt.h unless __USE_POSIX2 is defined, and getopt.h does not choose the standards-conforming implementation unless __USE_POSIX2 && !__USE_POSIX_IMPLICITLY && !__USE_GNU is defined. The POSIX-1 2008 documentation [1] suggests that SVr2 had a getopt, and the FreeBSD manpage [2] says BSD 4.3 had one, too. So maybe getopt should be exposed if either _BSD_SOURCE or _SVID_SOURCE is defined. But it isn’t currently. Anyway, I hope the patch is of some use. Thanks, Jonathan [1] http://www.opengroup.org/onlinepubs/9699919799/functions/getopt.html [2] http://svn.freebsd.org/viewvc/base/head/lib/libc/stdlib/getopt.3?view=markup man3/getopt.3 | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/man3/getopt.3 b/man3/getopt.3 index 503f689..97ff60a 100644 --- a/man3/getopt.3 +++ b/man3/getopt.3 @@ -68,7 +68,7 @@ Feature Test Macro Requirements for glibc (see .in .sp .BR getopt (): -_POSIX_C_SOURCE\ >=\ 2 || _XOPEN_SOURCE || _POSIX_SOURCE +_POSIX_C_SOURCE\ >=\ 2 || _XOPEN_SOURCE .br .BR getopt_long (), .BR getopt_long_only (): -- 1.6.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
