Setting -mno-cygwin in an environment variable

[Robert Collins]

You don't need automake - autoconf (which automake requires) will do
what you need. Or you could consider altering the gcc specs file on your
cygwin machine to make -nocygwin the default. Or even consider
installing mingw which sounds like a closer match for your target
builds.

Rob


----- Original Message -----
From: "Patrick Doyle" <wpd@delcomsys.com>
To: "cygwin" <cygwin@cygwin.com>
Sent: Saturday, March 17, 2001 8:08 AM
Subject: Setting -mno-cygwin in an environment variable


> I have a number of ANSI C projects that I frequently migrate between
my
> Linux box and my Cygwin box.  I prefer to compile with the -mno-cygwin
flag
> on my Cygwin box because I don't use anything other than pure ANSI
> functions, so I don't want to require the cygwin DLL (in order to all
me to
> execute the program on a box which has not had Cygwin installed).  Up
until
> now, I have simply included a "NO_CYGWIN" flag in my makefiles, which
is set
> to "-mno-cygwin" when I compile on the Cygwin box and set to nothing
when I
> compile on the Linux box.
>
> I would like to automate this process somewhat.  I was wondering:
>
> a) Are there any (Cygwin specific) environment variables that "gcc"
> recognizes that would allow me to specify -mno-cygwin simply by
setting such
> a variable?  (I don't see any in the info file for gcc.)
>
> b) If not then, if I were to add such a capability, could I post the
patch
> to this list and hope to see it propagated to the gcc development
team, or
> would I have to join the gcc mailing list and submit the patch
directly
> there and wait for it to propagate to cygwin?
>
> (Personally, I am hoping that the answer to part (a) is "yes, simply
set the
> GCC_DEFAULT_MACHINE environment variable to -mno-cygwin and you'll get
the
> behavior that you want".)
>
> I've tried browsing the mailing list archive, but do you have any idea
how
> many hits it finds when searching for things like "gcc", "environment
> variable", or "-mno-cygwin" (which gets parsed into "mno" and
"cygwin" --
> lots of hits on that last one)?
>
> I suppose the final option would be for me to finally learn to use
automake
> and to switch between the two boxes that way.  If somebody could point
me at
> a good beginners tutorial for that, I can try that path as well.
>
> Thanks...
> --wpd
>
>
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>


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