Fix includes Header files which are located in the same directory that the file from where it is included must be included using `" "`, not `< >`. Otherwise the compiler (gcc 5) cannot understand `#include <tommath_class.h>` in `/usr/include/tommath/tommath.h`.
diff --git a/tommath.h b/tommath.h
index 04274eb..258da57 100644
--- a/tommath.h
+++ b/tommath.h
@@ -18,7 +18,7 @@
#include <stdint.h>
#include <limits.h>
-#include <tommath_class.h>
+#include "tommath_class.h"
#ifdef __cplusplus
extern "C" {
diff --git a/tommath_class.h b/tommath_class.h
index d9d0e72..6885e23 100644
--- a/tommath_class.h
+++ b/tommath_class.h
@@ -1121,8 +1121,8 @@
# define LTM_LAST
#endif
-#include <tommath_superclass.h>
-#include <tommath_class.h>
+#include "tommath_superclass.h"
+#include "tommath_class.h"
#else
# define LTM_LAST
#endif