cppfiles.c (PIPE_BUF): #define PIPE_BUF if not defined already.

Wed Mar 17 11:20:29 1999  Dave Brolley  <brolley@cygnus.com>
	* cppfiles.c (PIPE_BUF): #define PIPE_BUF if not defined already.

From-SVN: r25817

gcc/ChangeLog

+Wed Mar 17 11:20:29 1999  Dave Brolley  <brolley@cygnus.com>
+
+	* cppfiles.c (PIPE_BUF): #define PIPE_BUF if not defined already.
+
 Wed Mar 17 09:25:06 1999  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
         * c-lex.c: Don't include setjmp.h.

gcc/cppfiles.c

@@ -803,6 +803,10 @@ find_position (start, limit, linep, colp)
    If your file has more than one kind of end-of-line marker, you
    will get messed-up line numbering.  */
 
+#ifndef PIPE_BUF
+#define PIPE_BUF 4096
+#endif
+
 static long
 read_and_prescan (pfile, fp, desc, len)
      cpp_reader *pfile;