2 files changed, 79 insertions, 0 deletions
diff --git a/win/configure b/win/configure
index 70b9eca..37df097 100755
--- a/win/configure
+++ b/win/configure
@@ -4028,6 +4028,73 @@ fi
 
 
 
+#-------------------------------------------
+#     Check for _strtoi64
+#-------------------------------------------
+
+echo "$as_me:$LINENO: checking availability of _strtoi64" >&5
+echo $ECHO_N "checking availability of _strtoi64... $ECHO_C" >&6
+if test "${tcl_have_strtoi64+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+int
+main ()
+{
+_strtoi64(0,0,0)
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_have_strtoi64=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_have_strtoi64=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $tcl_have_strtoi64" >&5
+echo "${ECHO_T}$tcl_have_strtoi64" >&6
+if test $tcl_have_strtoi64 = no; then
+
+cat >>confdefs.h <<\_ACEOF
+#define NO_STRTOI64 1
+_ACEOF
+
+fi
+
 #--------------------------------------------------------------------
 # Windows XP theme engine header for Ttk
 #--------------------------------------------------------------------
diff --git a/win/configure.in b/win/configure.in
index a8e1012..7570b17 100644
--- a/win/configure.in
+++ b/win/configure.in
@@ -115,6 +115,18 @@ SC_CONFIG_CFLAGS
 AC_CHECK_HEADER(errno.h, , MAN2TCLFLAGS="-DNO_ERRNO_H")
 AC_SUBST(MAN2TCLFLAGS)
 
+#-------------------------------------------
+#     Check for _strtoi64
+#-------------------------------------------
+
+AC_CACHE_CHECK([availability of _strtoi64], tcl_have_strtoi64, [
+    AC_TRY_LINK([#include <stdlib.h>],
+	    [_strtoi64(0,0,0)],
+	    tcl_have_strtoi64=yes, tcl_have_strtoi64=no)])
+if test $tcl_have_strtoi64 = no; then
+    AC_DEFINE(NO_STRTOI64, 1, [Is _strtoi64 function available?])
+fi
+
 #--------------------------------------------------------------------
 # Windows XP theme engine header for Ttk
 #--------------------------------------------------------------------