diff --git a/Makefile b/Makefile
index 137e233..e055275 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,11 @@ Q := @
 
 all: build.zsh build/binary.zsh build/library.zsh build/ofile.zsh build/script.zsh build/sharedlib.zsh build/staticlib.zsh
 
-build.zsh:
+build.zsh: build.zsh.in
+	@echo '  [SED]   build.zsh'
+	$(Q)sed -e 's&@LIBDIR@&$(LIBDIR)&;s&@BINDIR@&$(BINDIR)&;s&@SHAREDIR@&$(SHAREDIR)&;' 'build.zsh.in' > 'build.zsh'
+	$(Q)chmod +x 'build.zsh'
+
 
 build.zsh.install: build.zsh
 	@echo '  [IN]    $(BINDIR)/build.zsh'
@@ -25,6 +29,8 @@ build.zsh.install: build.zsh
 	$(Q)install -m0755 build.zsh $(DESTDIR)$(BINDIR)/build.zsh
 
 build.zsh.clean:
+	@echo '  [RM]    build.zsh'
+	$(Q)rm -f build.zsh
 
 build.zsh.uninstall:
 	@echo '  [RM]    $(BINDIR)/build.zsh'
diff --git a/build.zsh b/build.zsh.in
old mode 100755
new mode 100644
similarity index 98%
rename from build.zsh
rename to build.zsh.in
index 5be24ef..d5898b3
--- a/build.zsh
+++ b/build.zsh.in
@@ -53,6 +53,10 @@ function RM {
 	echo "${fg_bold[white]}  [RM]    ${fg_bold[white]}$@${reset_color}"
 }
 
+function SED {
+	echo "${fg_bold[green]}  [SED]   ${fg_bold[white]}$@${reset_color}"
+}
+
 function DIR {
 	echo "${fg_bold[magenta]}  [DIR]   ${fg_bold[white]}$@${reset_color}"
 }
@@ -166,7 +170,7 @@ function duplicated {
 	return 1
 }
 
-for dir in "@SHAREDIR@/build.zsh" build; do
+for dir in "@SHAREDIR@/build.zsh" ./build; do
 	[[ -d "$dir" ]] && {
 		for i in "$dir"/*.zsh; do
 			. "$i"
diff --git a/build/script.zsh b/build/script.zsh
index 3fe27f4..dc673ce 100644
--- a/build/script.zsh
+++ b/build/script.zsh
@@ -4,8 +4,13 @@ function script.build {
 
 	if [[ -e "${target}.in" ]]; then
 		write " ${target}.in"
-		write "\tcat ${target}.in > ${target}"
-		write "\tchmod +x ${target}"
+		write "\t@echo '$(SED "${target}")'"
+		write -n "\t${Q}sed -e '"
+		write -n "s&@LIBDIR@&\$(LIBDIR)&;"
+		write -n "s&@BINDIR@&\$(BINDIR)&;"
+		write -n "s&@SHAREDIR@&\$(SHAREDIR)&;"
+		write    "' '${target}.in' > '${target}'"
+		write "\t${Q}chmod +x '${target}'"
 	fi
 
 	write "\n"