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-rw-r--r--win/tcl.m415
1 files changed, 15 insertions, 0 deletions
diff --git a/win/tcl.m4 b/win/tcl.m4
index a766b7c..26a7036 100644
--- a/win/tcl.m4
+++ b/win/tcl.m4
@@ -553,6 +553,21 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
MACHINE="IA64"
AC_MSG_RESULT([ Using 64-bit $MACHINE mode])
;;
+ *)
+ AC_TRY_COMPILE([
+ #ifdef _WIN64
+ #error 64-bit
+ #endif
+ ], [],
+ tcl_win_64bit=no,
+ tcl_win_64bit=yes
+ )
+ if test "$tcl_win_64bit" = "yes" ; then
+ do64bit=amd64
+ MACHINE="AMD64"
+ AC_MSG_RESULT([ Using 64-bit $MACHINE mode])
+ fi
+ ;;
esac
else
if test "${SHARED_BUILD}" = "0" ; then