Perform a clipped port
Done a long time ago, and testing all-green.
Preparation of a new glibc external
Three additional packages were necessary to build glibc: gawk, texinfo, and gcc-multilib. (You must use 'gcc-multilib', not a gcc-specific multilib; the build depends on certain symlinks which don't otherwise exist.)
I followed the usual instructions, but I made two changes to the resulting tarball. The first was to remove the generated include directory. (Which would forever tie the build to whatever happened to be installed on the machine when I made the tarball. Removing this directory is probably what caused the gcc-multilib requirement.) The second was a modification to the glibc manual's Makefile to permit the 'make install' process to finish. (I'm not sure why installing texinfo isn't sufficient for this, but since we don't care about the glibc manual....)
I applied the Debian 7 set of patches, which all seemed to work. (Yay!)