meillo@234: #!/usr/bin/env awk
meillo@234: #
meillo@234: # List dependencies in Makefile input,
meillo@234: # ignore a set of default targets and 1:1 dependencies
meillo@234: # and generate dot graph output
meillo@234: 
meillo@234: BEGIN {
meillo@234: 	FS = " *: *"
meillo@234: 
meillo@234: 	ignore["all"] = 1
meillo@234: 	ignore["configure"] = 1
meillo@234: 	ignore["Makefile"] = 1
meillo@234: 	ignore["install"] = 1
meillo@234: 	ignore["uninstall"] = 1
meillo@234: 	ignore["clean"] = 1
meillo@234: 	ignore["distclean"] = 1
meillo@234: 	ignore["realclean"] = 1
meillo@234: 	ignore["mostlyclean"] = 1
meillo@234: 	ignore["superclean"] = 1
meillo@234: 	ignore["mmhdist"] = 1
meillo@234: 	ignore["lint"] = 1
meillo@234: 
meillo@234: 	print "digraph foo {"
meillo@234: }
meillo@234: 
meillo@234: /^\t/ {
meillo@234: 	next
meillo@234: }
meillo@234: 
meillo@234: $1 ~ /^[a-zA-Z_]+$/ {
meillo@234: 	if ($1 in ignore) {
meillo@234: 		next
meillo@234: 	}
meillo@234: 	split($2, dep, /[ \t]+/)
meillo@234: 	for (i in dep) {
meillo@234: 		if (dep[i] ~ /^\$/) {
meillo@234: 			continue
meillo@234: 		}
meillo@234: 		if (dep[i] ~ "^"$1"\\.(o|sh)$") {
meillo@234: 			continue
meillo@234: 		}
meillo@234: 		sub(/\.o$/, ".c", dep[i]);
meillo@234: 		print "\t\"" dep[i] "\" [shape=box];"
meillo@234: 		print "\t\"" dep[i] "\" -> \"" $1 "\";"
meillo@234: 	}
meillo@234: 	print ""
meillo@234: }
meillo@234: 
meillo@234: END {
meillo@234: 	print "}"
meillo@234: }