update awk.Makefile

awk.Makefile

 # awk program that patches the Makefile generated by Coq.
 
+# Detect the name this project will be installed under.
+/\$\(COQLIBINSTALL\)\/.*\/\$\$i/ {
+# Wow, POSIX awk is really broken.  I mean, isn't it supposed to be a text processing language?
+# And there is not even a way to access the matched groups of a regexp...?!? Lucky enough,
+# we can just split the string at '/' here.
+	split($0, PIECES, /\//);
+	PROJECT=PIECES[2];
+}
+
 # Patch the uninstall target to work properly, and to also uninstall stale files.
 # Also see <https://coq.inria.fr/bugs/show_bug.cgi?id=4907>.
 /^uninstall:/ {
 	print "uninstall:";
-	print "\tif [ -d \"$$(DSTROOT)\"$$(COQLIBINSTALL)/iris/ ]; then find \"$$(DSTROOT)\"$$(COQLIBINSTALL)/iris/ -name \"*.vo\" -print -delete; fi";
+	print "\tif [ -d \"$$(DSTROOT)\"$$(COQLIBINSTALL)/"PROJECT"/ ]; then find \"$$(DSTROOT)\"$$(COQLIBINSTALL)/"PROJECT"/ -name \"*.vo\" -print -delete; fi";
 	getline;
 	next
 }