configure script question

Jonathan Wilson <[email protected]> Thu, 11 Apr 2002 23:34:38 +0800
Newsgroups gmane.comp.mozilla.builds
Organization Another Netscape Collabra Server User
Message-ID <[email protected]>
If I want to add something to cflags somewhere in a particular bit of 
configure.in, what line of code would I use? (in this case, the compiler 
flag is -mno-cygwin)
Also, how do I make sure it gets used for both C and C++?