https://sourceforge.net/p/alleg/bugs/398/

--- a/addons/jpgalleg/src/decode.c	2008-02-13 14:04:57.000000000 +0100
+++ b/addons/jpgalleg/src/decode.c	2015-09-03 14:57:57.888485546 +0200
@@ -477,7 +477,7 @@
  *  Reads a string of bits from the input stream and returns a properly signed
  *  number given the category.
  */
-INLINE int
+static INLINE int
 get_value(int category)
 {
 	int result = get_bits(category);
