Index: ibmswtpm2-1119/src/makefile
===================================================================
--- ibmswtpm2-1119.orig/src/makefile	2018-01-16 12:46:54.412486803 +0100
+++ ibmswtpm2-1119/src/makefile	2018-01-16 12:48:38.498125716 +0100
@@ -41,17 +41,17 @@
 
 CC = /usr/bin/gcc
 
-CCFLAGS = -Wall  			\
+CCFLAGS += -fno-strict-aliasing -fno-aggressive-loop-optimizations -Wno-unused-result \
 	-Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
-	-Werror -Wsign-compare \
-	 -c -ggdb -O0 			\
+	-Werror -Wsign-compare -Wno-unused-value -Wno-aggressive-loop-optimizations \
+	 -c -ggdb -O 			\
 	-DTPM_POSIX			\
 	-D_POSIX_			\
 	-DTPM_NUVOTON			\
 	-I../utils			\
 	-I.
 
-LNFLAGS = -ggdb 			\
+LNFLAGS += -ggdb 			\
 	-DTPM_POSIX			\
 	-DTPM_NUVOTON			\
 	-lcrypto			\