check for SA_SIGINFO

git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@497 b08c6af1-5177-4d33-ba66-4b1c6b8b522a

C/sysbits.c

@@ -1028,7 +1028,11 @@ my_signal_info(int sig, void (*handler)(int))
 
   sigact.sa_handler = handler;
   sigemptyset(&sigact.sa_mask);
+#if HAVE_SIGINFO
   sigact.sa_flags = SA_SIGINFO;
+#else
+  sigact.sa_flags = 0;
+#endif
 
   sigaction(sig,&sigact,NULL);
 }

config.h.in

@@ -217,6 +217,7 @@
 #undef  HAVE_WAITPID
 #undef  HAVE_MPZ_XOR
 
+#undef  HAVE_SIGINFO
 #undef  HAVE_SIGSEGV
 
 #undef  HAVE_ENVIRON

configure

@@ -9468,6 +9468,69 @@ _ACEOF
 
 fi
 
+echo "$as_me:$LINENO: checking for siginfo" >&5
+echo $ECHO_N "checking for siginfo... $ECHO_C" >&6
+if test "${yap_siginfo+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+#include "confdefs.h"
+#include <signal.h>
+	#include <stdio.h>
+
+#ifdef F77_DUMMY_MAIN
+#  ifdef __cplusplus
+     extern "C"
+#  endif
+   int F77_DUMMY_MAIN() { return 1; }
+#endif
+int
+main ()
+{
+printf("SIGINFO value is %d\n", SA_SIGINFO);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  yap_siginfo=yes
+else
+  echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+yap_siginfo=no
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+fi
+
+echo "$as_me:$LINENO: result: $yap_siginfo" >&5
+echo "${ECHO_T}$yap_siginfo" >&6
+if test $yap_siginfo = yes
+then
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_SIGINFO 1
+_ACEOF
+
+else
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_SIGINFO 0
+_ACEOF
+
+fi
+
 echo "$as_me:$LINENO: checking union wait" >&5
 echo $ECHO_N "checking union wait... $ECHO_C" >&6
 cat >conftest.$ac_ext <<_ACEOF

configure.in

@@ -722,6 +722,24 @@ else
 AC_DEFINE(HAVE_SIGSEGV,0)
 fi
 
+dnl check for siginfo
+AC_MSG_CHECKING(for siginfo)
+AC_CACHE_VAL(yap_siginfo,[
+AC_TRY_COMPILE(
+	#include <signal.h>
+	#include <stdio.h>
+	,
+	printf("SIGINFO value is %d\n", SA_SIGINFO);
+	,
+	yap_siginfo=yes,yap_siginfo=no)])
+AC_MSG_RESULT($yap_siginfo)
+if test $yap_siginfo = yes 
+then
+AC_DEFINE(HAVE_SIGINFO,1)
+else
+AC_DEFINE(HAVE_SIGINFO,0)
+fi
+
 dnl this is copied from the Tcl code
 dnl this code checks whether the system defines an union wait
 AC_MSG_CHECKING([union wait])