diff -uNr libpri-1.6.0.ORIG/Makefile libpri-1.6.0/Makefile
--- libpri-1.6.0.ORIG/Makefile	2017-09-19 10:37:05.176546588 +0100
+++ libpri-1.6.0/Makefile	2017-09-19 10:37:41.029544605 +0100
@@ -24,10 +24,6 @@
 # Uncomment if you want libpri not send PROGRESS_INDICATOR w/ALERTING
 #ALERTING=-DALERTING_NO_PROGRESS
 
-CC=gcc
-GREP=grep
-AWK=awk
-
 OSARCH=$(shell uname -s)
 PROC?=$(shell uname -m)
 
@@ -68,7 +64,7 @@
 	$(STATIC_OBJS)
 CFLAGS ?= -g
 CFLAGS += $(CPPFLAGS)
-CFLAGS += -Wall -Werror -Wstrict-prototypes -Wmissing-prototypes
+CFLAGS += -Wall -Wstrict-prototypes -Wmissing-prototypes
 CFLAGS += -fPIC $(ALERTING) $(LIBPRI_OPT) $(COVERAGE_CFLAGS)
 INSTALL_PREFIX=$(DESTDIR)
 INSTALL_BASE=/usr
@@ -108,17 +104,12 @@
 #The problem with sparc is the best stuff is in newer versions of gcc (post 3.0) only.
 #This works for even old (2.96) versions of gcc and provides a small boost either way.
 #A ultrasparc cpu is really v9 but the stock debian stable 3.0 gcc doesnt support it.
-ifeq ($(PROC),sparc64)
-PROC=ultrasparc
-LIBPRI_OPT = -mtune=$(PROC) -O3 -pipe -fomit-frame-pointer -mcpu=v8
-else
-  ifneq ($(CODE_COVERAGE),)
+ifneq ($(CODE_COVERAGE),)
     LIBPRI_OPT=
     COVERAGE_CFLAGS=-ftest-coverage -fprofile-arcs
     COVERAGE_LDFLAGS=-ftest-coverage -fprofile-arcs
-  else
-    LIBPRI_OPT=-O2
-  endif
+else
+    LIBPRI_OPT=
 endif
 
 ifeq ($(CPUARCH),i686)
@@ -197,7 +188,7 @@
 	ranlib $(STATIC_LIBRARY)
 
 $(DYNAMIC_LIBRARY): $(DYNAMIC_OBJS)
-	$(CC) $(SOFLAGS) -o $@ $(DYNAMIC_OBJS)
+	$(CC) $(SOFLAGS) $(LDFLAGS) -o $@ $(DYNAMIC_OBJS)
 	$(LDCONFIG) $(LDCONFIG_FLAGS) .
 	ln -sf $(DYNAMIC_LIBRARY) libpri.so