configure: Add compiler warning -Wunused-but-set-parameter.
diff --git a/configure b/configure
index a4839a5..7a31847 100755
--- a/configure
+++ b/configure
@@ -12255,6 +12255,31 @@
if test $ac_cv_cflags__Wtype_limits = yes; then :
EXTRACFLAGS="$EXTRACFLAGS -Wtype-limits"
fi
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports -Wunused-but-set-parameter" >&5
+$as_echo_n "checking whether the compiler supports -Wunused-but-set-parameter... " >&6; }
+if test "${ac_cv_cflags__Wunused_but_set_parameter+set}" = set; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_wine_try_cflags_saved=$CFLAGS
+CFLAGS="$CFLAGS -Wunused-but-set-parameter"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int main(int argc, char **argv) { return 0; }
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_cflags__Wunused_but_set_parameter=yes
+else
+ ac_cv_cflags__Wunused_but_set_parameter=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+CFLAGS=$ac_wine_try_cflags_saved
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cflags__Wunused_but_set_parameter" >&5
+$as_echo "$ac_cv_cflags__Wunused_but_set_parameter" >&6; }
+if test $ac_cv_cflags__Wunused_but_set_parameter = yes; then :
+ EXTRACFLAGS="$EXTRACFLAGS -Wunused-but-set-parameter"
+fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports -Wwrite-strings" >&5
$as_echo_n "checking whether the compiler supports -Wwrite-strings... " >&6; }
if test "${ac_cv_cflags__Wwrite_strings+set}" = set; then :
