--- Makefile~	2019-02-07 03:10:06.000000000 -0700
+++ Makefile	2019-07-15 14:00:56.284868000 -0600
@@ -21,7 +21,7 @@
 
 klocwork: $(EXE)
 
-CXXFLAGS += -Wall -g -O3 -Wno-unknown-pragmas
+CXXFLAGS += -Wall -g -O0 -Wno-unknown-pragmas
 
 # uncomment if your Linux kernel supports access to /dev/mem from user space
 # CXXFLAGS += -DPCM_USE_PCI_MM_LINUX