--- Makefile.orig	Sun Jan 28 02:20:26 2007
+++ Makefile	Sun Jan 28 02:24:49 2007
@@ -2,7 +2,7 @@
 export OS ?= $(shell uname -s)
 
 export CXXWARNFLAGS = -Wall -Wold-style-cast -Wundef -Wsign-compare -Wconversion -Wpointer-arith -pedantic
-export CXXFLAGS = $(CXXWARNFLAGS) -g -O2
+export CXXFLAGS += $(CXXWARNFLAGS) -fPIC
 
 .PHONY: all build-static build-shared check clean distclean
 all: build-static build-shared check
@@ -23,7 +23,7 @@
 	$(MAKE) -C src distclean
 
 ifneq ($(OS),Windows)
-export prefix ?= /usr
+export prefix ?= ${PREFIX}
 
 .PHONY: install install-static
 install: