diff --git a/Makefile b/Makefile
index 73328ee..2ffcfb7 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,17 @@
-NAME=sp
-VERSION=1.2.0
-# Linux、Haiku、かIllumos = /usr、FreeBSDかOpenBSD = /usr/local、NetBSD = /usr/pkg
+UNAME_S := $(shell uname -s)
+
+NAME := $(shell cat main.c | grep "const char\* sofname" | awk '{print $$5}' | sed "s/\"//g" | sed "s/;//" )
+VERSION := $(shell cat main.c | grep "const char\* version" | awk '{print $$5}' | sed "s/\"//g" | sed "s/;//" )
 PREFIX=/usr
+ifeq ($(UNAME_S),FreeBSD)
+	PREFIX=/usr/local
+endif
+ifeq ($(UNAME_S),OpenBSD)
+	PREFIX=/usr/local
+endif
+ifeq ($(UNAME_S),NetBSD)
+	PREFIX=/usr/pkg
+endif
 CC=cc
 FILES=main.c showpass.c yankpass.c addpass.c delpass.c listpass.c genpass.c initpass.c otppass.c base32.c
 CFLAGS=-Wall -Wextra -O3 -I${PREFIX}/include -L${PREFIX}/lib