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-rw-r--r--lib/defines.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/defines.h b/lib/defines.h
index dd1d74b71a..d71afaa64a 100644
--- a/lib/defines.h
+++ b/lib/defines.h
@@ -54,6 +54,10 @@ typedef unsigned int size_t;
typedef int ssize_t;
#endif
+#ifndef HAVE_PTRDIFF_T
+typedef long ptrdiff_t;
+#endif
+
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif