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* doc/glibc-headers/getopt.texi (getopt.h): Cygwin 1.7 getopt is now compatible with glibc. * doc/posix-functions/getopt.texi (getopt): Likewise. Signed-off-by: Eric Blake <ebb9@byu.net>
49 lines
1.8 KiB
Plaintext
49 lines
1.8 KiB
Plaintext
@node getopt
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@section @code{getopt}
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@findex getopt
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POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/getopt.html}
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Gnulib module: getopt-posix or getopt-gnu
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The module @code{getopt-gnu} has support for ``long options'' and for
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``options that take optional arguments''. Compared to the API defined by POSIX,
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it adds a header file @code{<getopt.h>} and a function @code{getopt_long}.
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Portability problems fixed by either Gnulib module @code{getopt-posix} or @code{getopt-gnu}:
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@itemize
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@item
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The @code{getopt} function keeps some internal state that cannot be explicitly
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reset on some platforms:
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mingw.
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@end itemize
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Portability problems fixed by Gnulib module @code{getopt-gnu}:
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@itemize
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@item
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The function @code{getopt} does not support the @samp{+} flag in the options
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string on some platforms:
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MacOS X 10.5, AIX 5.2, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 10.
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@item
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The function @code{getopt} does not support options with optional arguments
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on some platforms:
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MacOS X 10.5, OpenBSD 4.0, AIX 5.2, HP-UX 11, IRIX 6.5, OSF/1 5.1,
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Solaris 10, Cygwin 1.5.x.
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@item
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The function @code{getopt_long} is missing on some platforms:
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AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 9, Interix 3.5.
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@end itemize
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Portability problems not fixed by Gnulib:
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@itemize
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@item
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The default behavior of the glibc implementation of @code{getopt} allows
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mixing option and non-option arguments on the command line in any order.
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Other implementations, such as the one in Cygwin, enforce strict POSIX
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compliance: they require that the option arguments precede the non-option
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arguments. This is something to watch out in your program's testsuite.
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@item
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The function @code{getopt_long_only} is missing on some platforms:
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MacOS X 10.3, FreeBSD 5.2.1, NetBSD 3.0, AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 9, mingw, Interix 3.5.
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@end itemize
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