cannot compile liboctave/file-ops.cc; mkfifo issue (MinGW build)

[Tatsuro MATSUOKA]

Hello

Platform windows xp, MinGW (gcc-4.4.0).

The problem of mkdir and io.h in compling liboctave/file-ops.cc seemed to be 
solved if sys/stat.h is
placed under the include path defined in CPPFLASS  after John's changeset  
http://hg.savannah.gnu.org/hgweb/octave/rev/62eb444704ba

The url of nabble archive is 
http://old.nabble.com/mkdir-in-libgnu-seemed-to-be-ignored-in-building-liboctave-(Development-Branch)-to26940234.html

However I have met a problem 'mkfifo'.  

../../../hg/octave-work/liboctave/file-ops.cc: In static member function 
'static int
file_ops::mkfifo_internal(const std::string&, mode_t, std::string&)':
../../../hg/octave-work/liboctave/file-ops.cc:130: error: '::mkfifo' has not 
been declared

The function 'mkfifo' seem to be not exist in MinGW (also in MSVC).

See below thread,
http://lists.zerezo.com/mingw-users/msg02643.html

Perhaps this kind of problems will occur if functions in the gnulib will be 
used.

Using gnulib on windows, special treatments may be required.
The problems are beyond my ability.

I think that it is required to hear opinions from much power contributers on 
Windows, like Michael and
Benjamin.

Regards

Tatsuro

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