I am trying to add PAM support to my embedded Linux build. I am using a the Rocko version of the Yocto project. I added DISTRO_FEATURES_append += " pam" to my build. In my build I see the pam.d folder as expected. In my /lib/security folder I see many of the expected modules like pam_unix.so and pam_group.so. What I do NOT see is the pam_cracklib.so module. I looked at the BB recipe for pam given by the Rocko release and I see that it depends on cracklib and the supplied cracklib recipe is run.
I must be missing something basic. Why do I not see the pam_cracklib.so module available? I also verified it is not in some other folder.
libpam recipe uses dynamic packaging to put each plugin into its own package. You need to add the correct package into your image: it should be pam-plugin-cracklib-<baselib> -- check e.g. the $WORKDIR/packages-split/ directory to see what packages were built.