diff --git a/tools/configure b/tools/configure
index caefce7ba3..52ae52cbf1 100755
--- a/tools/configure
+++ b/tools/configure
@@ -232,6 +232,7 @@ simcc () {
    LDOPTS="$LDOPTS -mconsole"
    output="$output.exe"
    winbuild="yes"
+   SHARED_CFLAGS=''
  else
  case $uname in
    CYGWIN*)
@@ -241,6 +242,7 @@ simcc () {
    LDOPTS="$LDOPTS -mconsole"
    output="$output.exe"
    winbuild="yes"
+   SHARED_CFLAGS=''
    ;;
 
    MINGW*)