--- mujs-1.3.6.old/Makefile
+++ mujs-1.3.6/Makefile
@@ -4,11 +4,10 @@
 
 default: build/debug/mujs build/debug/mujs-pp
 
-CFLAGS = -std=c99 -pedantic -Wall -Wextra -Wno-unused-parameter
+CFLAGS = -std=c99 -pedantic -fPIC -Wall -Wextra -Wno-unused-parameter
+OPTIM  = -O2
 
-OPTIM = -O3
-
-prefix = /usr/local
+prefix = __META_PREFIX__
 bindir = $(prefix)/bin
 incdir = $(prefix)/include
 libdir = $(prefix)/lib