diff --git a/config.mk b/config.mk
index 6ff729b..5f55a3a 100644
--- a/config.mk
+++ b/config.mk
@@ -5,6 +5,7 @@ PREFIX = ~/.local
 INCDIR = include
 OBJDIR = obj
 BUILDDIR = build
+DIRS = ${INCDIR} ${OBJDIR} ${BUILDDIR}
 
 # includes
 INCS = -I${INCDIR}
@@ -14,3 +15,5 @@ CFLAGS = -Wall -Wextra -Werror ${INCS}
 
 # compiler and linker
 CC = cc
+
+$(shell mkdir -p $(DIRS))