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-rw-r--r--includes/mkDerivedConstants.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/includes/mkDerivedConstants.c b/includes/mkDerivedConstants.c
index bd2214e696..dedb386fb9 100644
--- a/includes/mkDerivedConstants.c
+++ b/includes/mkDerivedConstants.c
@@ -34,9 +34,11 @@
#if SIZEOF_VOID_P == SIZEOF_INT
/* compiling for 32bit target */
#define PRIdPTR "d"
-#else
+#elif SIZEOF_VOID_P == SIZEOF_LONG
/* compiling for 64bit target */
#define PRIdPTR "ld"
+#else
+#error Cannot find definition for PRIdPTR
#endif
#endif