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-rw-r--r--fpga_interchange/arch.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/fpga_interchange/arch.cc b/fpga_interchange/arch.cc
index d20fe253..a1651c81 100644
--- a/fpga_interchange/arch.cc
+++ b/fpga_interchange/arch.cc
@@ -28,6 +28,7 @@
#include <cmath>
#include <cstring>
#include <queue>
+#include <set>
#include "constraints.impl.h"
#include "fpga_interchange.h"