diff --git a/config.mk b/config.mk
index 04b8215..df69901 100644
--- a/config.mk
+++ b/config.mk
@@ -7,13 +7,14 @@ VERSION = 0.3
 # paths
 PREFIX = /usr
 MANPREFIX = ${PREFIX}/share/man
+DESTDIR = $(MUFS)
 
 # includes and libs
 INCS = -I. -I/usr/include
 LIBS = -L/usr/lib -lc
 
 # flags
-CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -D_GNU_SOURCE
+CPPFLAGS = -DVERSION=\"${VERSION}\" -D_DEFAULT_SOURCE -D_GNU_SOURCE $(CXXFLAGS)
 CFLAGS = -g -std=c99 -pedantic -Wall -O0 ${INCS} ${CPPFLAGS}
 LDFLAGS = -static -g ${LIBS}
 #LDFLAGS = -s ${LIBS}