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-rw-r--r--src/base/io/io.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/base/io/io.c b/src/base/io/io.c
index c2363cb5..63f1b7d1 100644
--- a/src/base/io/io.c
+++ b/src/base/io/io.c
@@ -25,7 +25,10 @@
#include "sat/bmc/bmc.h"
#ifdef WIN32
+#include <process.h>
#define unlink _unlink
+#else
+#include <unistd.h>
#endif
ABC_NAMESPACE_IMPL_START