pam_gdm_deps = [ libpam_dep, ] if keyutils_dep.found() pam_gdm_deps += keyutils_dep endif pam_gdm = library('pam_gdm', 'pam_gdm.c', dependencies: pam_gdm_deps, include_directories: config_h_dir, name_prefix: '', install: true, install_dir: pam_mod_dir, )