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-rw-r--r--functions.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/functions.h b/functions.h
index e635220..f322d7a 100644
--- a/functions.h
+++ b/functions.h
@@ -25,6 +25,8 @@
#include <ffi.h>
#elif HAVE_FFI_FFI_H
#include <ffi/ffi.h>
+#else
+#error "Couldn't include ffi.h."
#endif