Index: tk/build.sh
==================================================================
--- tk/build.sh
+++ tk/build.sh
@@ -145,10 +145,13 @@
 
 		# Remove previous directory's "tkConfig.sh" if found
 		rm -f 'tkConfig.sh'
 
 		cd "${BUILDDIR}/${dir}" || exit 1
+
+		# Remove broken pre-generated Makfiles
+		rm -f GNUmakefile Makefile makefile
 
 		if [ "${dir}" = "win" ]; then
 			# Statically link Tk to Tclkit if we are compiling for
 			# Windows
 			STATICTK="1"