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Re: Missing /include/sys/stropts.h? [gold star alert]
On Fri, 12 Mar 2004, Christopher Faylor wrote:
> On Fri, Mar 12, 2004 at 05:19:35PM -0000, Dave Korn wrote:
> >> -----Original Message-----
> >> From: cygwin-owner On Behalf Of Shawn Legrand
> >> Sent: 12 March 2004 16:08
> >> Should the file stropts.h exist on CygWin?
> > You already answered that one yourself:
> >> I checked and there is no such file there or in
> >> any directory off of root or in the CVS source tree.
> > Anyway, you also asked:
> >> If not - could I
> >> copy it from a Unix system (such as a MAC BSD (OS X)) and put
> >> it in CygWin?
> > That kind of game almost never works. Sure, the initial compilation will
> >succeed, or at least it won't error out with a missing file, but since
> >whatever library functions or OS features the header file describes don't
> >actually exist on your system, it isn't going to help any: it'll probably
> >all fall apart at the final link stage.
> > BTW and FYI, here's the generic recipe for figuring out the answer to
> >these sorts of question:
> > stropts.h (a moment's googling shows me) is related to POSIX streams
> > By searching for the keyword streams in the Posix spec at
> >http://www.opengroup.org/onlinepubs/007904975/nframe.html I found a few of
> >the functions involved were fattach, fdetach, putmsg, putpmsg.
> > By searching in the cygwin api reference at
> >http://cygwin.com/cygwin-api/cygwin-api.html I couldn't find any of those
> > So my deduction is that the POSIX streams functionality isn't implemented
> >by cygwin and therefore it's no surprise the header isn't there.
> > This also means that the program you are trying to compile depends on OS
> >functionality that cygwin doesn't provide, and so porting it to cygwin will
> >never be a simple configure'n'make.
> Can we get a gold star over here for exemplary use of reasoning powers?
> Thank you, Dave, for explaining how to think about problems like this.
We sure can.
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