🚀 go-pugleaf

In make.h, SYS_SIGLIST_DECLARED is used to avoid the type
conflict, but this preprocessor macro is not defined
automatically by configure.  The following patch fixes this
problem.

Note that I added acconfig.h file so that SYS_SIGLIST_DECLARED is
included in generated config.h.in.  Also, HAVE_UNION_WAIT is
added since autoheader reported it is not covered the acconfig.h
came with autoconf.  Our autoheader might be of a bit different
version from what `make' maintainers are using.

-- >8 ---- >8 ---- >8 ---- >8 ---- >8 ---- >8 ---- >8 ---- >8 --
diff -c -r1.1 configure.in
*** configure.in	1993/01/24 08:48:29	1.1
--- configure.in	1993/01/24 08:49:06
***************
*** 43,48 ****
--- 43,53 ----
  	 	 [union wait status; return wait (&status);],
  		 AC_DEFINE(HAVE_UNION_WAIT))
  
+ dnl Check to see if sys_siglist is declared in the header.
+ AC_COMPILE_CHECK(sys_siglist declaration,
+ [#include <signal.h>], [void *p = sys_siglist;],
+ AC_DEFINE(SYS_SIGLIST_DECLARED))
+ 
  # The presence of the following is not meant to imply
  # that make necessarily works on those systems.
  AC_DYNIX_SEQ

diff -c -r1.1 acconfig.h
*** acconfig.h	1993/01/24 08:54:36	1.1
--- acconfig.h	1993/01/24 08:54:47
***************
*** 0 ****
--- 1,5 ----
+ /* Define if `union wait' is the type of the first arg to wait functions.  */
+ #undef HAVE_UNION_WAIT
+ 
+ /* Define if `sys_siglist' is declared in <signal.h> */
+ #undef SYS_SIGLIST_DECLARED