+/* Whether to enable the more costly support for relocatable libraries.
+ It allows libraries to be have been installed with a different original
+ prefix than the program. But it is quite costly, especially on Cygwin
+ platforms, see below. Therefore we enable it by default only on native
+ Windows platforms. */
+#ifndef ENABLE_COSTLY_RELOCATABLE
+# if (defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__
+# define ENABLE_COSTLY_RELOCATABLE 1
+# else
+# define ENABLE_COSTLY_RELOCATABLE 0
+# endif
+#endif
+