diff -uNr polipo-1.1.1/Makefile polipo-1.1.1.mod/Makefile
--- polipo-1.1.1/Makefile	2014-05-15 01:19:43.000000000 +0300
+++ polipo-1.1.1.mod/Makefile	2020-01-03 19:42:39.469061429 +0200
@@ -1,9 +1,9 @@
-PREFIX = /usr/local
+PREFIX ?= /usr/local
 BINDIR = $(PREFIX)/bin
-MANDIR = $(PREFIX)/man
-INFODIR = $(PREFIX)/info
-LOCAL_ROOT = /usr/share/polipo/www
-DISK_CACHE_ROOT = /var/cache/polipo
+MANDIR = $(PREFIX)/share/man
+INFODIR = $(PREFIX)/share/info
+LOCAL_ROOT = $(PREFIX)/share/polipo/www
+DISK_CACHE_ROOT = $(PREFIX)/var/cache/polipo
 
 # To compile with Unix CC:
 
@@ -12,7 +12,7 @@
 # To compile with GCC:
 
 # CC = gcc
-CDEBUGFLAGS = -Os -g -Wall -fno-strict-aliasing
+#CDEBUGFLAGS = -Os -g -Wall -fno-strict-aliasing
 
 # To compile on a pure POSIX system:
 
@@ -60,7 +60,7 @@
 
 DEFINES = $(FILE_DEFINES) $(PLATFORM_DEFINES)
 
-CFLAGS = $(MD5INCLUDES) $(CDEBUGFLAGS) $(DEFINES) $(EXTRA_DEFINES)
+CFLAGS += $(MD5INCLUDES) $(CDEBUGFLAGS) $(DEFINES) $(EXTRA_DEFINES)
 
 SRCS = util.c event.c io.c chunk.c atom.c object.c log.c diskcache.c main.c \
        config.c local.c http.c client.c server.c auth.c tunnel.c \
@@ -99,7 +99,6 @@
 	mkdir -p $(TARGET)$(INFODIR)
 	cp -f polipo.man $(TARGET)$(MANDIR)/man1/polipo.1
 	cp polipo.info $(TARGET)$(INFODIR)/
-	install-info --info-dir=$(TARGET)$(INFODIR) polipo.info
 
 
 polipo.info: polipo.texi