--- Makefile.orig	2015-10-25 19:42:45 UTC
+++ Makefile
@@ -47,18 +47,18 @@ dist_files := $(build_files) $(doc_files) \
   $(headers) $(sources)
 dist_subdirs := example test
 
-all: examples
+all:
 
 install: install-headers install-docs
 
 uninstall: uninstall-headers uninstall-docs
 
 install-headers:
-	mkdir -p $(PREFIX)/include/png++
-	cp $(headers) $(PREFIX)/include/png++
+	mkdir -p $(DESTDIR)$(PREFIX)/include/png++
+	cp $(headers) $(DESTDIR)$(PREFIX)/include/png++
 
 uninstall-headers:
-	rm -rf $(PREFIX)/include/png++
+	rm -rf $(DESTDIR)$(PREFIX)/include/png++
 
 dist: dist-mkdir dist-copy-files dist-package