SR fails to build properly under recent versions of Linux.

For Red Hat Linux 6.0: we have no fix for the following problem:
	tokens.c:20: initializer element for 'yyin' is not constant
	tokens.c:20: initializer element for 'yyout' is not constant

For older versions of Linux:
After unpacking the tar file, apply this patch before configuring
and building SR.  Just cd to the newly unpacked directory and run
"patch <patchfile", substuting this file for "patchfile".

    Gregg Townsend
    July 27, 1999

-------------------------------------------------------------------------------

diff -r -c csw/asm.c csw/asm.c
*** csw/asm.c	Mon Nov 22 14:18:14 1993
--- csw/asm.c	Wed Jan 17 10:38:25 1996
***************
*** 8,14 ****
  
  #include "../arch.h"
  
! #ifdef __svr4__		/* if SVR4 (including Solaris 2.x) */
  #define SR_BUILD_CONTEXT	sr_build_context
  #define SR_CHG_CONTEXT		sr_chg_context
  #define SR_CHECK_STK		sr_check_stk
--- 8,14 ----
  
  #include "../arch.h"
  
! #if (defined(__linux__) && defined(__ELF__)) || defined(__svr4__)
  #define SR_BUILD_CONTEXT	sr_build_context
  #define SR_CHG_CONTEXT		sr_chg_context
  #define SR_CHECK_STK		sr_check_stk
diff -r -c rts/macros.h rts/macros.h
*** rts/macros.h	Tue Dec 12 09:54:15 1995
--- rts/macros.h	Fri Mar 27 09:53:27 1998
***************
*** 39,57 ****
  
  #ifdef linux
  
- #if (_STDIO_USES_IOSTREAM+0)==1	/* Linux 0.99.15 and later */
  #define _pptr _IO_write_ptr
  #define _gptr _IO_read_ptr
  #define _egptr _IO_read_end
  #define _pbase _IO_write_base
- #endif
  
  #define _S_NO_READS 4		/* Reading not allowed */
  #define _S_NO_WRITES 8		/* Writing not allowd */
  #define ISOPEN(f) \
      (((f)->_flags & (_S_NO_READS|_S_NO_WRITES)) != (_S_NO_READS|_S_NO_WRITES))
  #define INCH(l,f) \
!     (((f->_gptr)<(f->_egptr))?(int)(*(char *)(f)->_gptr++):sr_inchar(l,f))
  #define OUCH(l,f,c) \
      ((((f->_pptr)-(f->_pbase))>0)?(*(f)->_pptr++=(c)):outchar(l,f,c))
  
--- 39,55 ----
  
  #ifdef linux
  
  #define _pptr _IO_write_ptr
  #define _gptr _IO_read_ptr
  #define _egptr _IO_read_end
  #define _pbase _IO_write_base
  
  #define _S_NO_READS 4		/* Reading not allowed */
  #define _S_NO_WRITES 8		/* Writing not allowd */
  #define ISOPEN(f) \
      (((f)->_flags & (_S_NO_READS|_S_NO_WRITES)) != (_S_NO_READS|_S_NO_WRITES))
  #define INCH(l,f) \
!     (((f->_gptr)<(f->_egptr))?(int)(*(unsigned char *)(f)->_gptr++):sr_inchar(l,f))
  #define OUCH(l,f,c) \
      ((((f->_pptr)-(f->_pbase))>0)?(*(f)->_pptr++=(c)):outchar(l,f,c))
  
diff -r -c rts/socket.c rts/socket.c
*** rts/socket.c	Fri Dec 15 13:51:44 1995
--- rts/socket.c	Fri Mar 27 09:57:07 1998
***************
*** 484,490 ****
      char s1[100], s2[100];
      extern int sys_nerr;
  
! #if !defined(__NetBSD__) && !defined(__FreeBSD__)
      extern char *sys_errlist[];
  #endif
  
--- 484,490 ----
      char s1[100], s2[100];
      extern int sys_nerr;
  
! #if !defined(__NetBSD__) && !defined(__FreeBSD__) && !defined(__linux__)
      extern char *sys_errlist[];
  #endif