On Thu, Dec 13, 2001 at 09:18:39PM +0100, Ralf Habacker wrote: > Hi all, > > kde needs the regexp functions regexec and regcomp. > > The cygwin lib contains the System V8 function call style, while the pcre package >(pcreposix) > provides another style (the system V style I guess). The problem is now, that both >libs > supports the same names for regexec and regcomp but with different parameter/return >types. > This results sometimes in execution failures if the libs are not in the right order >like > shown in the following example. > > pcre regexp wanted > > $ gcc ... -lpcreposix -lcygwin -> okay > > $ gcc ... -lpthreads|-lm|-lc -lpcreposix -lcygwin -> failure: the functions in >cygwin lib > are used
But that order should never happen EXCEPT you're making the big mistake to give `-lm' or `-lc' on the command line explicitly. Since -lcygwin is appended automagically and libc.a and libm.a are the same library anyway, the answer is simply, "Don't do that." > Especially in libtool related environment with many dependency libs like kde this >causes much > trouble. > > Should it not be better, to remove the regexp support from cygwin into a seperate >lib, so > that users has an easier possibility to choose which regexp style they want ? We didn't want that for compatibility reasons. We often already discussed to trash the V8 implementation in favor of a POSIX implementation but that would break older applications which we're trying to avoid. Btw., we have another POSIX regex library besides pcreposix: -lregex. It's somewhat smaller and it's also DLLized. OpenSSH's configure.ac file has a special check to see if a regex lib exists and if the base regexp implementation in the std C lib is POSIX compliant. We added that to the OpenSSH configury a few weeks ago to make Cygwin happy. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Developer mailto:[EMAIL PROTECTED] Red Hat, Inc. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
