Just installed postgres 9.3 + postgis 2.1 on debian 7.
Postgis works fine, but installation of PGrouting fails in psql.
(no errors while installing sudo apt-get install postgresql-9.3-pgrouting)
But this SQL:
CREATE EXTENSION pgrouting;
ERROR: could not load library "/usr/lib/postgresql/9.3/lib/postgis-2.1.so": /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.14' not found (required by /usr/lib/libproj.so.0) SQL state: 58P01 Context: compilation of PL/pgSQL function "pgr_startpoint" near line 1
I also tried the combination postgresql 9.2 with postgis 2.0, same problem.