Merge pull request #3423 from BsAtHome/backport_2.9_fix_debug-O0

Backport: fix debug -O0

Author: andypugh

src/rtapi/Submakefile

@@ -14,7 +14,7 @@ RTAPI_APP_SRCS := \
 	rtapi/rtapi_pci.cc
 USERSRCS += $(RTAPI_APP_SRCS)
 
-$(call TOOBJSDEPS, rtapi/rtapi_pci.cc): EXTRAFLAGS += $(LIBUDEV_CFLAGS) -O0
+$(call TOOBJSDEPS, rtapi/rtapi_pci.cc): EXTRAFLAGS += $(LIBUDEV_CFLAGS)
 $(call TOOBJSDEPS, $(RTAPI_APP_SRCS)): EXTRAFLAGS += -DSIM \
 	-UULAPI -DRTAPI -pthread
 ../bin/rtapi_app: $(call TOOBJS, $(RTAPI_APP_SRCS))