- mkdir -p $(DESTDIR)$(bash_completion_dir)
- install -m0644 $(bash_script) $(DESTDIR)$(bash_completion_dir)/notmuch
- mkdir -p $(DESTDIR)$(zsh_completion_dir)
- install -m0644 $(zsh_script) $(DESTDIR)$(zsh_completion_dir)/notmuch
+ifeq ($(WITH_BASH),1)
+ mkdir -p "$(DESTDIR)$(bash_completion_dir)"
+ install -m0644 $(bash_script) "$(DESTDIR)$(bash_completion_dir)/notmuch"
+endif
+ifeq ($(WITH_ZSH),1)
+ mkdir -p "$(DESTDIR)$(zsh_completion_dir)"
+ install -m0644 $(zsh_scripts) "$(DESTDIR)$(zsh_completion_dir)"
+endif