Re: [Mingw-users] problem with SIGCHLD.. and so on

[Bob R. <bob...@co...>]

On Fri, Apr 27, 2007 at 09:39:45PM +0200, Francisco González Morell wrote:
> On vie, 2007-04-27 at 14:57 -0400, Bob Rossi wrote:
> > On Fri, Apr 27, 2007 at 11:32:16AM -0700, Brian Dessent wrote:
> > > DCent wrote:
> > > 
> > > > I want to use some signals in my programme, but there is no termios.h on
> > > > Windows, and only signal.h does not work:
> > > > 
> > > > d321go.c: In function `main':
> > > > d321go.c:154: error: storage size of 'sig_int_struct' isn't known
> > > > d321go.c:166: error: `SIGCHLD' undeclared (first use in this function)
> > > > d321go.c:166: error: (Each undeclared identifier is reported only once
> > > > d321go.c:166: error: for each function it appears in.)
> > > > d321go.c:172: error: `SIGUSR1' undeclared (first use in this function)
> > > > d321go.c:178: error: `SIGHUP' undeclared (first use in this function)
> > > > 
> > > > Is there an other solution than termios.h? (it does not work on Windows if I
> > > > copy it to the include-dir)
> > > 
> > > You're going to run into countless problems like this unless you change
> > > your expectations.  MinGW targets the native Windows API, that means no
> > > POSIX emulation.  Windows does not have signals natively.  Yes,
> > > technically MSVCRT supports an few signal functions for ANSI C
> > > compatibility, but it's really meaningless once you read MSDN and find
> > > out that they don't really work.
> > > 
> > > So, you can't just expect to compile your code unchanged with MinGW. 
> > > You have to port it to windows.  If you don't want to do that, then
> > > you'll have to use Cygwin.
> > 
> > Or consider changing your application to use a portability layer. Once
> > you do that, porting to mingw should be much easier.
> > 
> > Bob Rossi
> > 
> Is there any GPL portability layer already written?

Well, there is 
  - apr http://apr.apache.org/
  - ACE http://www.cs.wustl.edu/~schmidt/ACE.html 
  - boost http://www.boost.org/
  - qt http://www.trolltech.com/products/qt
and there is probably more.

Bob Rossi