--- pystring/Makefile.orig	2020-02-04 03:24:44.000000000 -0300
+++ pystring/Makefile	2020-11-20 20:23:07.314247959 -0300
@@ -1,7 +1,9 @@
-LIBTOOL = libtool
-LIBDIR = /usr/lib
-CXX = g++
-CXXFLAGS = -g -O3 -Wall -Wextra -Wshadow -Wconversion -Wcast-qual -Wformat=2
+LIBTOOL ?= libtool
+PREFIX ?= /usr
+INCLUDEDIR = ${PREFIX}/include/pystring
+LIBDIR = ${PREFIX}/lib
+CXX ?= g++
+CXXFLAGS ?= -g -O3 -Wall -Wextra -Wshadow -Wconversion -Wcast-qual -Wformat=2 -fPIC
 
 all: libpystring.la
 
@@ -12,7 +14,8 @@
 	$(LIBTOOL) --mode=link --tag=CXX $(CXX) -o $@ $< -rpath $(LIBDIR)
 
 install: libpystring.la
-	$(LIBTOOL) --mode=install install -c $< $(LIBDIR)/$<
+	$(LIBTOOL) --mode=install install -Dm755 $< $(DESTDIR)$(LIBDIR)/$<
+	$(LIBTOOL) --mode=install install -Dm644 pystring.h $(DESTDIR)$(INCLUDEDIR)/pystring.h
 
 clean:
 	$(RM) -fr pystring.lo pystring.o libpystring.la .libs