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-rw-r--r--win/configure.in1
1 files changed, 1 insertions, 0 deletions
diff --git a/win/configure.in b/win/configure.in
index f839521..635469b 100644
--- a/win/configure.in
+++ b/win/configure.in
@@ -119,6 +119,7 @@ AC_CACHE_CHECK(for LPFN_ACCEPT support in winsock2.h,
tcl_cv_lpfn_decls,
AC_TRY_COMPILE([
#define WIN32_LEAN_AND_MEAN
+#define INCL_WINSOCK_API_TYPEDEFS 1
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
#include <winsock2.h>