+echo "$as_me:14891: checking if you want to use C11 _Noreturn feature" >&5
+echo $ECHO_N "checking if you want to use C11 _Noreturn feature... $ECHO_C" >&6
+
+# Check whether --enable-stdnoreturn or --disable-stdnoreturn was given.
+if test "${enable_stdnoreturn+set}" = set; then
+ enableval="$enable_stdnoreturn"
+ test "$enableval" != yes && enableval=no
+ if test "$enableval" != "no" ; then
+ enable_stdnoreturn=yes
+ else
+ enable_stdnoreturn=no
+ fi
+else
+ enableval=no
+ enable_stdnoreturn=no
+
+fi;
+echo "$as_me:14908: result: $enable_stdnoreturn" >&5
+echo "${ECHO_T}$enable_stdnoreturn" >&6
+
+if test $enable_stdnoreturn = yes; then
+echo "$as_me:14912: checking for C11 _Noreturn feature" >&5
+echo $ECHO_N "checking for C11 _Noreturn feature... $ECHO_C" >&6
+if test "${cf_cv_c11_noreturn+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ cat >"conftest.$ac_ext" <<_ACEOF
+#line 14918 "configure"
+#include "confdefs.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdnoreturn.h>
+static _Noreturn void giveup(void) { exit(0); }
+
+int
+main (void)
+{
+if (feof(stdin)) giveup()
+ ;
+ return 0;
+}
+_ACEOF
+rm -f "conftest.$ac_objext"
+if { (eval echo "$as_me:14935: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>&5
+ ac_status=$?
+ echo "$as_me:14938: \$? = $ac_status" >&5
+ (exit "$ac_status"); } &&
+ { ac_try='test -s "conftest.$ac_objext"'
+ { (eval echo "$as_me:14941: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:14944: \$? = $ac_status" >&5
+ (exit "$ac_status"); }; }; then
+ cf_cv_c11_noreturn=yes
+else
+ echo "$as_me: failed program was:" >&5
+cat "conftest.$ac_ext" >&5
+cf_cv_c11_noreturn=no
+fi
+rm -f "conftest.$ac_objext" "conftest.$ac_ext"
+
+fi
+echo "$as_me:14955: result: $cf_cv_c11_noreturn" >&5
+echo "${ECHO_T}$cf_cv_c11_noreturn" >&6
+else
+ cf_cv_c11_noreturn=no,
+fi
+
+if test "$cf_cv_c11_noreturn" = yes; then
+
+cat >>confdefs.h <<\EOF
+#define HAVE_STDNORETURN_H 1
+EOF
+
+cat >>confdefs.h <<EOF
+#define STDC_NORETURN _Noreturn
+EOF
+
+ HAVE_STDNORETURN_H=1
+else
+ HAVE_STDNORETURN_H=0
+fi
+
+if test "$GCC" = yes || test "$GXX" = yes
+then
+
+if test "$GCC" = yes || test "$GXX" = yes
+then
+ case $CFLAGS in
+ (*-Werror=*)
+ test -n "$verbose" && echo " repairing CFLAGS: $CFLAGS" 1>&6
+
+echo "${as_me:-configure}:14985: testing repairing CFLAGS: $CFLAGS ..." 1>&5
+
+ cf_temp_flags=
+ for cf_temp_scan in $CFLAGS
+ do
+ case "x$cf_temp_scan" in
+ (x-Werror=*)
+
+ test -n "$EXTRA_CFLAGS" && EXTRA_CFLAGS="$EXTRA_CFLAGS "
+ EXTRA_CFLAGS="${EXTRA_CFLAGS}$cf_temp_scan"
+
+ ;;
+ (*)
+
+ test -n "$cf_temp_flags" && cf_temp_flags="$cf_temp_flags "
+ cf_temp_flags="${cf_temp_flags}$cf_temp_scan"
+
+ ;;
+ esac
+ done
+ CFLAGS="$cf_temp_flags"
+ test -n "$verbose" && echo " ... fixed $CFLAGS" 1>&6
+
+echo "${as_me:-configure}:15008: testing ... fixed $CFLAGS ..." 1>&5
+
+ test -n "$verbose" && echo " ... extra $EXTRA_CFLAGS" 1>&6
+
+echo "${as_me:-configure}:15012: testing ... extra $EXTRA_CFLAGS ..." 1>&5
+
+ ;;
+ esac
+fi
+
+if test "$GCC" = yes || test "$GXX" = yes
+then
+ case $CPPFLAGS in
+ (*-Werror=*)
+ test -n "$verbose" && echo " repairing CPPFLAGS: $CPPFLAGS" 1>&6
+
+echo "${as_me:-configure}:15024: testing repairing CPPFLAGS: $CPPFLAGS ..." 1>&5
+
+ cf_temp_flags=
+ for cf_temp_scan in $CPPFLAGS
+ do
+ case "x$cf_temp_scan" in
+ (x-Werror=*)
+
+ test -n "$EXTRA_CFLAGS" && EXTRA_CFLAGS="$EXTRA_CFLAGS "
+ EXTRA_CFLAGS="${EXTRA_CFLAGS}$cf_temp_scan"
+
+ ;;
+ (*)
+
+ test -n "$cf_temp_flags" && cf_temp_flags="$cf_temp_flags "
+ cf_temp_flags="${cf_temp_flags}$cf_temp_scan"
+
+ ;;
+ esac
+ done
+ CPPFLAGS="$cf_temp_flags"
+ test -n "$verbose" && echo " ... fixed $CPPFLAGS" 1>&6
+
+echo "${as_me:-configure}:15047: testing ... fixed $CPPFLAGS ..." 1>&5
+
+ test -n "$verbose" && echo " ... extra $EXTRA_CFLAGS" 1>&6
+
+echo "${as_me:-configure}:15051: testing ... extra $EXTRA_CFLAGS ..." 1>&5
+
+ ;;
+ esac
+fi
+
+if test "$GCC" = yes || test "$GXX" = yes
+then
+ case $LDFLAGS in
+ (*-Werror=*)
+ test -n "$verbose" && echo " repairing LDFLAGS: $LDFLAGS" 1>&6
+
+echo "${as_me:-configure}:15063: testing repairing LDFLAGS: $LDFLAGS ..." 1>&5
+
+ cf_temp_flags=
+ for cf_temp_scan in $LDFLAGS
+ do
+ case "x$cf_temp_scan" in
+ (x-Werror=*)
+
+ test -n "$EXTRA_CFLAGS" && EXTRA_CFLAGS="$EXTRA_CFLAGS "
+ EXTRA_CFLAGS="${EXTRA_CFLAGS}$cf_temp_scan"
+
+ ;;
+ (*)
+
+ test -n "$cf_temp_flags" && cf_temp_flags="$cf_temp_flags "
+ cf_temp_flags="${cf_temp_flags}$cf_temp_scan"
+
+ ;;
+ esac
+ done
+ LDFLAGS="$cf_temp_flags"
+ test -n "$verbose" && echo " ... fixed $LDFLAGS" 1>&6
+
+echo "${as_me:-configure}:15086: testing ... fixed $LDFLAGS ..." 1>&5
+
+ test -n "$verbose" && echo " ... extra $EXTRA_CFLAGS" 1>&6
+
+echo "${as_me:-configure}:15090: testing ... extra $EXTRA_CFLAGS ..." 1>&5
+
+ ;;
+ esac
+fi
+
+echo "$as_me:15096: checking if you want to turn on gcc warnings" >&5
+echo $ECHO_N "checking if you want to turn on gcc warnings... $ECHO_C" >&6