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Re: lynx-dev peculiar behavior
From: |
T.E.Dickey |
Subject: |
Re: lynx-dev peculiar behavior |
Date: |
Sat, 10 Jul 1999 17:09:04 -0400 (EDT) |
> The man page text Tom send talked about using ksh instead of sh as the
> shell for system, by referring to some other man pages:
>
> If the
> application is standard-conforming (see standards(5)), sys-
> tem() uses /usr/bin/ksh (see ksh(1)); otherwise system()
> uses /usr/bin/sh (see sh(1)).
>
> No I don't mean what they mean by "standard-conforming", but apparently
> your lynx isn't according to their definition since it uses "sh".
>
> Klaus
Headers, Environments, and Macros standards(5)
NAME
standards, posix, POSIX, posix.1, POSIX.1, posix.2, POSIX.2,
xnet, XNET, xnet4, XNET4, xpg, XPG, xpg3, XPG3, xpg4, XPG4,
xpg4v2, XPG4v2 - standards and specifications supported by
Solaris
DESCRIPTION
Solaris supports IEEE Std 1003.1 and IEEE Std 1003.2, com-
monly known as POSIX.1 and POSIX.2, respectively. The fol-
lowing table lists each version of these standards with a
brief description and the SunOS or Solaris release that
first conformed to it.
________________________________________________________________
| POSIX Standard | Description | Release |
|________________|________________________________|_____________|
| POSIX.1-1988 | system interfaces and headers | SunOS 4.1 |
| POSIX.1-1990 | POSIX.1-1988 update | Solaris 2.0|
| POSIX.1b-1993 | realtime extensions | Solaris 2.4|
| POSIX.1c-1996 | threads extensions | Solaris 2.6|
| POSIX.2-1992 | shell and utilities | Solaris 2.5|
| POSIX.2a-1992 | interactive shell and utili-| Solaris 2.5|
| | ties | |
|________________|________________________________|_____________|
Solaris also supports the X/Open Common Applications
Environment (CAE) Portability Guide Issue 3 (XPG3), Issue 4
(XPG4), Issue 4 Version 2 (XPG4v2), and Networking Services
Issue 4 (XNET4). The following table lists each X/Open
specification with a brief description and the SunOS or
Solaris release that first conformed to it.
________________________________________________________________
| X/Open | | |
| Specification | Description | Release |
|________________|________________________________|_____________|
| XPG3 | superset of POSIX.1-1988 con-| SunOS 4.1 |
| | taining utilities from SVID3 | |
| XPG4 | superset of POSIX.1-1990,| Solaris 2.4|
| | POSIX.2-1992, and POSIX.2a-| |
| | 1992 containing extensions to| |
| | POSIX standards from XPG3 | |
| XPG4v2 | superset of XPG4 containing| Solaris 2.6|
| | historical BSD interfaces| |
| | widely used by common applica-| |
| | tion packages | |
| XNET4 | sockets and XTI interfaces | Solaris 2.6|
|________________|________________________________|_____________|
Utilities
If the behavior required by XPG4 conflicted with historical
Solaris utility behavior, the original Solaris version of
SunOS 5.6 Last change: 11 Apr 1997 1
Headers, Environments, and Macros standards(5)
the utility was not changed; rather, a new version that was
XPG4-compliant was provided in /usr/xpg4/bin. For applica-
tions wishing to take advantage of POSIX.2, POSIX.2a, XPG4,
or XPG4v2 features, the PATH (sh or ksh) or path (csh)
environment variables should be set with /usr/xpg4/bin
preceding any other directories in which utilities specified
by those specifications are found, such as /bin, /usr/bin,
/usr/ucb, and /usr/ccs/bin.
Feature Test Macros
POSIX
Applications that are intended to be conforming POSIX.1
applications must define the feature test macros specified
by the standard before including any headers. For the stan-
dards listed below, applications must define the feature
test macros listed. Application writers must check the
corresponding standards for other macros that can be queried
to determine if desired options are supported by the imple-
mentation.
POSIX.1-1990 _POSIX_SOURCE
POSIX.1-1990 _POSIX_SOURCE
and and
POSIX.2-1992
C-Language Bindings Option _POSIX_C_SOURCE=2
POSIX.1b-1993 _POSIX_C_SOURCE=199309L
POSIX.1c-1996 _POSIX_C_SOURCE=199506L
X/Open
To build or compile an application that conforms to one of
the X/Open specifications, use the following guidelines.
Applications need not set the POSIX feature test macros if
they require both XPG and POSIX functionality.
XPG3 The application must define _XOPEN_SOURCE.
XPG4 The application must define _XOPEN_SOURCE and set
_XOPEN_VERSION=4.
XPG4v2 The application must define _XOPEN_SOURCE and set
_XOPEN_SOURCE_EXTENDED=1.
XNET4 The application must define _XOPEN_SOURCE and set
_XOPEN_SOURCE_EXTENDED=1.
Compilation
A POSIX.2-, XPG4-, or XPG4v2-compliant implementation must
include an ANSI X3.159-1989 (ANSI C Language) standard-
conforming compilation system and the cc and c89 utilities.
SunOS 5.6 Last change: 11 Apr 1997 2
Headers, Environments, and Macros standards(5)
Solaris 2.6 was tested with the cc and c89 utilities and the
compilation system provided by Sun WorkShop Compiler C 4.2
in the SPARC and x86 environments. When cc is used to link
applications, /usr/ccs/lib/values-xpg4.o must be specified
on any link/load command line.
An XNET4-conforming application must include -l xnet on any
link/load command line.
If the compiler suppports the redefine_extname pragma
feature (the Sun WorkShop Compiler C 4.2 compiler defines
the macro __PRAGMA_REDEFINE_EXTNAME to indicate that it sup-
ports this feature), then the standard headers use #pragma
redefine_extname directives to properly map function names
onto library entry point names. This mapping provides full
support for ISO C, POSIX, and X/Open namespace reservations.
The Sun WorkShop Compiler C 4.2 compiler was used for all
branding and certification tests for Solaris 2.6.
If this pragma feature is not supported by the compiler, the
headers use the #define directive to map internal function
names onto appropriate library entry point names. In this
instance, applications should avoid using the explicit 64-
bit symbols listed on the interface64(5) manual page, since
these names are used by the implementation to name the
alternative entry points.
SEE ALSO
sysconf(3C), environ(5), interface64(5)
SunOS 5.6 Last change: 11 Apr 1997 3
--
Thomas E. Dickey
address@hidden
http://www.clark.net/pub/dickey
- Re: lynx-dev peculiar behavior, (continued)
- Re: lynx-dev peculiar behavior, Klaus Weide, 1999/07/10
- Re: lynx-dev peculiar behavior, Larry W. Virden, 1999/07/10
- Re: lynx-dev peculiar behavior, T.E.Dickey, 1999/07/10
- Re: lynx-dev peculiar behavior, T.E.Dickey, 1999/07/10
- Re: lynx-dev peculiar behavior, T.E.Dickey, 1999/07/10
- Re: lynx-dev peculiar behavior,
T.E.Dickey <=
- Re: lynx-dev peculiar behavior, Larry W. Virden, 1999/07/10
- Re: lynx-dev peculiar behavior, Larry W. Virden, 1999/07/10
- Re: lynx-dev peculiar behavior, Larry W. Virden, 1999/07/10
- Re: lynx-dev peculiar behavior, Larry W. Virden, 1999/07/10
- Re: lynx-dev peculiar behavior, Larry W. Virden, 1999/07/10
- Re: lynx-dev peculiar behavior, T.E.Dickey, 1999/07/10