contrib_dir = ./contrib
examples_dir = ./examples
-all_contribs = $(dir $(contrib_dir)/*/Makefile)
+all_contribs = $(dir $(wildcard $(contrib_dir)/*/Makefile))
# Additional program directories (contrib and examples) that are buildable
extras = $(filter-out $(contrib_dir)/nitc/,$(all_contribs))
-extras += $(dir $(examples_dir)/*/Makefile)
+extras += $(dir $(wildcard $(examples_dir)/*/Makefile))
all: tools man
@echo ""