non gcc compilation of src/complain.o fails due to missing macro

[a whited sepulchre]

Hi,

    this bug prevents normal compilation on non gcc systems due to a
    missing macro in complain.h - the macro is taken from lib/error.h to
    build the following output:

-----
> src/bison --version
bison (GNU Bison) 1.29

Copyright 1984, 1986, 1989, 1992, 2000, 2001 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-----

    with the macro, the build completes ok, the gnu context diff is simply:

-----
> /usr/local/gnu/diff -c complain.h $BUILDROOT/bison-1.29/src/complain.h
*** complain.h  Tue Nov  7 08:28:46 2000
--- /home/ameko/build/bison-1.29/src/complain.h Wed Oct  3 13:54:15 2001
***************
*** 19,24 ****
--- 19,37 ----
  #ifndef COMPLAIN_H_
  #define COMPLAIN_H_ 1
  
+ #ifndef __attribute__
+ /* This feature is available in gcc versions 2.5 and later.  */
+ # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
+ #  define __attribute__(Spec) /* empty */
+ # endif
+ /* The __-protected variants of `format' and `printf' attributes
+    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
+ # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+ #  define __format__ format
+ #  define __printf__ printf
+ # endif
+ #endif
+ 
  #ifdef        __cplusplus
  extern "C" {
  #endif
-----

        enjoy.

--
ameko