+
+dnl
+dnl LIB API versioning
+dnl
+dnl From the libtool manual:
+dnl 1. Start with version information of `0:0:0' for each libtool library.
+dnl 2. Update the version information only immediately before a public release.
+dnl More frequent updates are unnecessary, and only guarantee that the current
+dnl interface number gets larger faster.
+dnl 3. If the library source code has changed at all since the last update, then increment
+dnl revision (`c:r:a' becomes `c:r+1:a').
+dnl 4. If any interfaces have been added, removed, or changed since the last update,
+dnl increment current, and set revision to 0.
+dnl 5. If any interfaces have been added since the last public release, then increment age.
+dnl 6. If any interfaces have been removed since the last public release, then set age
+dnl to 0.
+LT_VERSION_C=0
+LT_VERSION_R=0
+LT_VERSION_A=0
+
+AC_SUBST(LT_VERSION_C)
+AC_SUBST(LT_VERSION_R)
+AC_SUBST(LT_VERSION_A)
+
+