diff -Naur monkey-1.5.0.orig/plugins/auth/tools/Makefile.in monkey-1.5.0/plugins/auth/tools/Makefile.in
--- monkey-1.5.0.orig/plugins/auth/tools/Makefile.in	2014-05-25 19:12:44.000000000 -0400
+++ monkey-1.5.0/plugins/auth/tools/Makefile.in	2014-05-26 13:15:29.347727637 -0400
@@ -3,10 +3,11 @@
 
 CC	= @echo "  CC   $(_PATH)/$@"; $CC
 CC_QUIET= @echo -n; $CC
-CFLAGS	= -I../../../src/include -I../ $CFLAGS
+CPPFLAGS = -I../../../src/include -I../
+CFLAGS	= $CFLAGS
 LDFLAGS = $LDFLAGS
 SOURCES = ../sha1.c ../base64.c mk_passwd.c
 OBJECTS = $(SOURCES:../.c=%.o)
 
 ../../../bin/mk_passwd: $(OBJECTS)
-	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ -ldl
+	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ $^ -ldl