Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!brutus.cs.uiuc.edu!psuvax1!rutgers!mcdchg!laidbak!daveb
From: daveb@i88.isc.com (David G. Burton)
Newsgroups: comp.unix.i386
Subject: Re: compile errors with /usr/include/sys/types.h
Message-ID: <1990Mar7.164311.3549@i88.isc.com>
Date: 7 Mar 90 16:43:11 GMT
References: <1990Mar1.022620.23226@ice9.uucp> <6730@turnkey.TCC.COM>
Sender: usenet@i88.isc.com (Usenet News)
Distribution: na
Organization: INTERACTIVE Systems Corporation, Naperville, IL
Lines: 30

In article <1990Mar1.022620.23226@ice9.uucp> bgh@ice9.uucp (barry hannigan) writes:
| [<sys/types.h> lines that cause syntax errors]

In article <6730@turnkey.TCC.COM> jackv@turnkey.TCC.COM replies:
|Barry,	there is nothing wrong with types.h, what is actually happening is
|that it is being included twice and the second pass through this stuff by
|the preprocessor causes the syntax error. You need to search through the
|include files, find the second inclusion and remove it. I have found the
|X source to be notorious for this problem. 

I have ``frequently'' run into this problem with <sys/types.h> when porting
software to my machine. Rather than modifying the various sources to
remove redundant #include's, I simply modify <sys/types.h> as in:

$ cat /usr/include/sys/types.h
#ifndef	SYS_TYPES_H
#define	SYS_TYPES_H
...
[ all of header file ]
...
#endif	/* SYS_TYPES_H */
$

Once this modification is made, no further problems due to multiple inclusion
of <sys/types.h> will occur.

Disclaimer: I don't speak for ISC; they don't speak for me.
--
Dave Burton
uunet!ism780c!laidbak!daveb