Requesting POSIX/SUS features from glibc

From: Paulo M C Aragão (yagpaulo-listas_at_yahoo.com)
Date: 10/31/05

  • Next message: Siju George: "Server hardware for Sarge" 
    Date: Mon, 31 Oct 2005 11:32:19 -0200
To: debian-user@lists.debian.org

    Hi,

    Feature test macro _POSIX_SOURCE refers to which edition of POSIX.1 ?

    And _XOPEN_SOURCE refers to which SUS version ?

    I've got installed libc6 and glibc-doc both 2.3.5-7. I've carefully read the
    documentation from these packages, but couldn't find clear, unambiguous
    answers. It was clear that:

    _POSIX_C_SOURCE >=1 POSIX.1 1990
    _POSIX_C_SOURCE >=2 POSIX.2 1992
    _POSIX_C_SOURCE >= 199309L POSIX.1 1993
    _POSIX_C_SOURCE >= 199506L POSIX.1 1996
    _XOPEN_SOURCE 500 SUS2

    but _POSIX_SOURCE vaguely referred to the POSIX.1 standard, no edition
    mentioned, and _XOPEN_SOURCE to "functionality described in the X/Open
    Portability Guide".

    Thanks
    Paulo 

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