diff -up tbb44_20160413oss/build/linux.gcc.inc~ tbb44_20160413oss/build/linux.gcc.inc
--- tbb44_20160413oss/build/linux.gcc.inc~	2016-04-14 08:47:01.000000000 -0600
+++ tbb44_20160413oss/build/linux.gcc.inc	2016-05-06 08:25:44.477787435 -0600
@@ -50,10 +50,10 @@ ifneq (,$(shell gcc -dumpversion | egrep
 endif
 
 ifeq ($(cfg), release)
-        CPLUS_FLAGS = $(ITT_NOTIFY) -g -O2 -DUSE_PTHREAD
+        CPLUS_FLAGS = $(CXXFLAGS) $(ITT_NOTIFY) -g -O2 -DUSE_PTHREAD
 endif
 ifeq ($(cfg), debug)
-        CPLUS_FLAGS = -DTBB_USE_DEBUG $(ITT_NOTIFY) -g -O0 -DUSE_PTHREAD
+        CPLUS_FLAGS = $(CXXFLAGS) -DTBB_USE_DEBUG $(ITT_NOTIFY) -g -O0 -DUSE_PTHREAD
 endif
 
 TBB_ASM.OBJ=
diff -up tbb44_20160413oss/build/Makefile.tbbmalloc~ tbb44_20160413oss/build/Makefile.tbbmalloc
--- tbb44_20160413oss/build/Makefile.tbbmalloc~	2016-04-14 08:47:01.000000000 -0600
+++ tbb44_20160413oss/build/Makefile.tbbmalloc	2016-05-06 08:25:44.504785259 -0600
@@ -51,7 +51,7 @@ ORIG_LINK_MALLOC.LIB:=$(LINK_MALLOC.LIB)
 MALLOC_CPLUS.OBJ = backend.$(OBJ) large_objects.$(OBJ) backref.$(OBJ)  tbbmalloc.$(OBJ)
 MALLOC.OBJ := $(MALLOC_CPLUS.OBJ) $(MALLOC_ASM.OBJ) itt_notify_malloc.$(OBJ) frontend.$(OBJ)
 PROXY.OBJ := proxy.$(OBJ) tbb_function_replacement.$(OBJ)
-M_CPLUS_FLAGS := $(subst $(WARNING_KEY),,$(M_CPLUS_FLAGS)) $(DEFINE_KEY)__TBBMALLOC_BUILD=1
+M_CPLUS_FLAGS := $(subst $(WARNING_KEY),,$(M_CPLUS_FLAGS)) $(CXXFLAGS) $(DEFINE_KEY)__TBBMALLOC_BUILD=1
 M_INCLUDES := $(INCLUDES) $(INCLUDE_KEY)$(MALLOC_ROOT) $(INCLUDE_KEY)$(MALLOC_SOURCE_ROOT)
 
 # Suppress superfluous warnings for TBBMalloc compilation

Diff finished.  Fri May  6 08:25:55 2016