--- parser3/configure	2020/12/11 15:46:13	1.206
+++ parser3/configure	2020/12/17 13:31:24	1.208
@@ -18309,7 +18309,7 @@ fi
 
 done
 
-for ac_header in assert.h limits.h ctype.h math.h process.h stdarg.h setjmp.h signal.h
+for ac_header in assert.h limits.h ctype.h math.h process.h stdarg.h setjmp.h signal.h pthread.h
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
@@ -18915,6 +18915,29 @@ $as_echo "no" >&6; }
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for TLS" >&5
+$as_echo_n "checking for TLS... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+__thread int i=0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  $as_echo "#define HAVE_TLS 1" >>confdefs.h
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for 0..9999 year date range support" >&5
 $as_echo_n "checking for 0..9999 year date range support... " >&6; }
 if test "$cross_compiling" = yes; then :
@@ -18954,6 +18977,7 @@ fi
 
 
 
+