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Date: Sat, 31 Jan 2004 14:37:12 -0500 (EST)
From: Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: Graham Walsh <graham_walsh50 AT hotmail DOT com>
cc: cygwin AT cygwin DOT com
Subject: Re: sys/types.h fails to compile under g++
In-Reply-To: <Law12-F68BdGrxSfQS8000270e7@hotmail.com>
Message-ID: <Pine.GSO.4.56.0401311433190.20927@slinky.cs.nyu.edu>
References: <Law12-F68BdGrxSfQS8000270e7 AT hotmail DOT com>
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Note-from-DJ: This may be spam

Graham,

Please don't quote raw e-mail addresses in your replies.  Let's not make
the spam harvesters' lives any easier.

FYI, the latest version of gcc for Cygwin is 3.3.1-3.
	Igor

On Sat, 31 Jan 2004, Graham Walsh wrote:

> thanks for that Larry.
>
> I'm going to install and download the latest g++ version (v3.2.3 apparently)
> however I am not %100 confident that it will address the issue I'm
> encountering. I'm running with g++ v3.2, I doubt this issue is addressed in
> such a minor release. It seems that there's something fundamentally wrong
> with one of the packages (cygwin or gnu). I cannot understand how such a
> widely used compiler should fail to compile a simple file like <sys/types.h>
> off the bat.
>
> I cannot say that with confidence until I download the latest gnu g++
> compiler release. PLEASE PLEASE PLEASE let this work otherwise I'm gonna
> have to start programming using the MS socket interface API's which is what
> I expressly set out to avoid.
>
> If anybody reads this and has a socket client/server demo with makefiles,
> could they pass them on to me. If they could let me know the versions of g++
> and cygwin they're using to build, it would also help me eliminate
> compiler/version dependencies.
>
> Cheers, I'll let you know how I fare.
>
> GrahamO
>
>
> >From: Larry Hall <cygwin-lh<at>cygwin<dot>com>
> >Reply-To: Cygwin List <cygwin<at>cygwin<dot>com>
> >To: "Graham Walsh" <graham_walsh50<at>hotmail<dot>com>, cygwin<at>cygwin<dot>com
> >Subject: Re: sys/types.h fails to compile under g++
> >Date: Sat, 31 Jan 2004 13:24:53 -0500
> >
> >WFM with 'g++ -o sock sock.cpp'.
> >
> >Your gcc/g++ is out of date, though I doubt that's the main problem.  See
> ><http://cygwin.com/problems.html> if you need to post again for help on
> >this issue.
> >
> >Thanks,
> >
> >Larry
> >
> >
> >At 09:52 AM 1/31/2004, Graham Walsh you wrote:
> > >Hiya, first time using cygwin.... I have a linker error when compiling a
> > >stock socket app.  All I use is standard calls to socket, bind etc. etc.
> > >
> > >All the symbols usually located in libsocket.so on unix are missing, i.e.
> > >bind, socket, etc. etc. I am at a loss as to what to link against. If
> > >anybody knows the compilation and link options I need it would help me out
> > >completely. I am assuming that the standard cygwin release provides all the
> > >libs I need to do this type of unix coding on my humble XP box. If I've
> > >missed anything, please let me know. I am using GCC v3.2 on an XP machine
> > >with the latest cygwin installation.
> > >
> > >my goal here is simply to write unix style code with gcc on my xp box.
> > >
> > >Cheers,
> > >GrahamO
> > >
> > >#include <stdio.h>
> > >#include <sys/types.h>
> > >#include <sys/socket.h>
> > >#include <netinet/in.h>
> > >#include <netdb.h>
> > >#include <unistd.h>
> > >#include <string.h>
> > >#include <arpa/inet.h>
> > >#include <stdlib.h>
> > >#define PORT 3550   /* Port that will be opened */
> > >#define BACKLOG 2   /* Number of allowed connections */
> > >extern "C" int close(int);
> > >extern "C" void bzero(void *, size_t);
> > >using namespace std;
> > >main()
> > >{
> > > int fd, fd2; /* file descriptors */
> > > struct sockaddr_in server; /* server's address information */
> > > struct sockaddr_in client; /* client's address information */
> > > int sin_size;
> > > if ((fd=socket(AF_INET, SOCK_STREAM, 0)) == -1 )
> > > {  /* calls socket() */
> > >   printf("socket() error\n");
> > >   exit(-1);
> > > }
> > > server.sin_family = AF_INET;
> > > server.sin_port = htons(PORT);   /* Remember htons() from "Conversions" section? =) */
> > > server.sin_addr.s_addr = INADDR_ANY;  /* INADDR_ANY puts your IP address automatically */
> > >//   bzero(&(server.sin_zero),8); /* zero the rest of the structure */
> > >//  void *memset (void *ptr, int val, size_t len);
> > > memset(&(server.sin_zero), 0, 8);
> > >
> > > if(bind(fd,(struct sockaddr*)&server,sizeof(struct sockaddr))==-1){ /* calls bind() */
> > >     printf("bind() error\n");
> > >     exit(-1);
> > > }
> > > if(listen(fd,BACKLOG) == -1){  /* calls listen() */
> > >     printf("listen() error\n");
> > >     exit(-1);
> > > }
> > >while(1){
> > > sin_size=sizeof(struct sockaddr_in);
> > > if ((fd2 = accept(fd,(struct sockaddr *)&client,&sin_size))==-1){ /* calls accept() */
> > >   printf("accept() error\n");
> > >   exit(-1);
> > > }
> > >
> > > printf("You got a connection from %s\n",inet_ntoa(client.sin_addr) ); /* prints client's IP */
> > >
> > > send(fd2,"Welcome to my server.\n",22,0); /* send to the client welcome message */
> > >
> > > close(fd2); /*  close fd2 */
> > >}
> > >}
> > >/* <---- SOURCE CODE ENDS HERE ----> */

-- 
				http://cs.nyu.edu/~pechtcha/
      |\      _,,,---,,_		pechtcha AT cs DOT nyu DOT edu
ZZZzz /,`.-'`'    -.  ;-;;,_		igor AT watson DOT ibm DOT com
     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

"I have since come to realize that being between your mentor and his route
to the bathroom is a major career booster."  -- Patrick Naughton

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