Create the 1.2 maintenance branch.
In fact, the maintenance branch for 1.1 was a bit hard to follow, but it didn't proove unfeasible.
1 Glibc does not build: asm/page.h not found
3 As of linux-2.6.25, asm/page.h is no longer exported.
4 This means the glibc up to and including 2.6 will not build against headers
5 exported from linux-2.6.25 and up. Starting with glibc-2.6.1, patches are
6 available that solves the issue. Switch to at least 2.6.1 if you can, or try
7 to backport the fix (should be quite easy).