--- a/src/libXNVCtrl/Makefile.orig	2015-01-16 15:29:38.678963363 +0100
+++ b/src/libXNVCtrl/Makefile	2015-01-16 15:32:50.571028309 +0100
@@ -38,7 +38,7 @@
 LIBXNVCTRL_VERSION := $(NVIDIA_VERSION)
 
 CFLAGS += -I .
-CFLAGS += -fPIC
+CFLAGS += -fPIC $(OPTFLAGS)
 CFLAGS += -I $(OUTPUTDIR)
 CFLAGS += -DPROGRAM_NAME=\"$(LIBXNVCTRL_PROGRAM_NAME)\"
 
--- a/src/libXNVCtrl/utils.mk.orig	2015-01-16 15:29:43.918964321 +0100
+++ b/src/libXNVCtrl/utils.mk	2015-01-16 15:32:23.298020384 +0100
@@ -31,7 +31,7 @@
 # only set these warnings and optimizations if CFLAGS is unset
 CFLAGS                ?= -Wall -O2
 # always set these -f CFLAGS
-CFLAGS                += -fno-strict-aliasing -fno-omit-frame-pointer -Wformat=2
+CFLAGS                += $(OPTFLAGS)
 CC_ONLY_CFLAGS        ?=
 LDFLAGS               ?=
 BIN_LDFLAGS           ?=