Append -D_FORTIFY_SOURCE to CPPFLAGS.
tree302ac87970197338444c4be5fe43a50954ea2c31
-rw-r--r-- 17989 COPYING
-rw-r--r-- 9416 INSTALL
-rw-r--r-- 349 KnownBugs
-rw-r--r-- 522 Makefile.am
-rw-r--r-- 8955 NEWS
-rw-r--r-- 3972 README
-rw-r--r-- 136 THANKS
-rw-r--r-- 1965 TODO.org
-rw-r--r-- 11023 acinclude.m4
-rwxr-xr-x 2443 autogen.sh
-rw-r--r-- 9908 configure.ac
drwxr-xr-x - debian
drwxr-xr-x - doc
drwxr-xr-x - m4
drwxr-xr-x - po
drwxr-xr-x - src
drwxr-xr-x - tests