1 1 1.3 Other implementations 1 ========================= 1 1 Even before libtool was developed, many free software packages built and 1 installed their own shared libraries. At first, these packages were 1 examined to avoid reinventing existing features. 1 1 Now it is clear that none of these packages have documented the 1 details of shared library systems that libtool requires. So, other 1 packages have been more or less abandoned as influences. 1