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-rw-r--r--sim/m4/sim_ac_output.m41
1 files changed, 1 insertions, 0 deletions
diff --git a/sim/m4/sim_ac_output.m4 b/sim/m4/sim_ac_output.m4
index 9ec566d..b18f254 100644
--- a/sim/m4/sim_ac_output.m4
+++ b/sim/m4/sim_ac_output.m4
@@ -22,6 +22,7 @@ dnl the target's fragment at the appropriate points.
AC_DEFUN([SIM_AC_OUTPUT],
[dnl
AC_REQUIRE([SIM_AC_OPTION_WARNINGS])dnl
+AC_REQUIRE([SIM_AC_OPTION_HARDWARE])dnl
dnl Make @cgen_breaks@ non-null only if the sim uses CGEN.
cgen_breaks=""