$NetBSD$

fix install paths

--- Makefile.orig	2024-03-10 16:29:48.000000000 +0000
+++ Makefile
@@ -30,7 +30,6 @@ VERSION= $(MMVERSION).$(RELVER)
 # Change the installation path as needed. This automatically adjusts
 # the paths in src/luaconf.h, too. Note: PREFIX must be an absolute path!
 #
-export PREFIX= /usr/local
 export MULTILIB= lib
 ##############################################################################
 
@@ -47,7 +46,7 @@ INSTALL_LMODD= $(INSTALL_SHARE)/lua
 INSTALL_LMOD= $(INSTALL_LMODD)/$(ABIVER)
 INSTALL_CMODD= $(INSTALL_LIB)/lua
 INSTALL_CMOD= $(INSTALL_CMODD)/$(ABIVER)
-INSTALL_MAN= $(INSTALL_SHARE)/man/man1
+INSTALL_MAN= $(DPREFIX)/$(PKGMANDIR)/man1
 INSTALL_PKGCONFIG= $(INSTALL_LIB)/pkgconfig
 
 INSTALL_TNAME= luajit-$(VERSION)