1 files changed, 73 insertions, 0 deletions
diff --git a/win/configure b/win/configure
index 32d9310..01bb01a 100755
--- a/win/configure
+++ b/win/configure
@@ -3628,6 +3628,79 @@ _ACEOF
 
 fi
 
+# See if the compiler supports intrinsics.
+
+echo "$as_me:$LINENO: checking for intrinsics support in compiler" >&5
+echo $ECHO_N "checking for intrinsics support in compiler... $ECHO_C" >&6
+if test "${tcl_cv_intrinsics+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.  */
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#undef WIN32_LEAN_AND_MEAN
+#include <intrin.h>
+
+int
+main ()
+{
+
+  unsigned int regs4;
+  __cpuid(&regs,0);
+  __debugbreak();
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  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_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  tcl_cv_intrinsics=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+tcl_cv_intrinsics=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+echo "$as_me:$LINENO: result: $tcl_cv_intrinsics" >&5
+echo "${ECHO_T}$tcl_cv_intrinsics" >&6
+if test "$tcl_cv_intrinsics" = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_INTRIN_H 1
+_ACEOF
+
+fi
+
 #--------------------------------------------------------------------
 # Determines the correct binary file extension (.o, .obj, .exe etc.)
 #--------------------------------------------------------------------