Author: Dylan Aïssi <bob.dybian@gmail.com>
Description: Inject some compiler flags.
Last-Update: 2019-01-18

--- a/Makefile
+++ b/Makefile
@@ -15,21 +15,21 @@
 BIN_TARGET := ${TARGET}
 
 CXX ?= g++
-CXXFLAGS := -std=c++11 -pthread -g -O3 -I${DIR_INC} $(foreach includedir,$(INCLUDE_DIRS),-I$(includedir)) ${CXXFLAGS}
+CXXFLAGS += -std=c++11 -pthread -g -O3 -I${DIR_INC} $(foreach includedir,$(INCLUDE_DIRS),-I$(includedir))
 LIBS := -lisal -ldeflate -lpthread
 STATIC_FLAGS := -static -Wl,--no-as-needed -pthread
-LD_FLAGS := $(foreach librarydir,$(LIBRARY_DIRS),-L$(librarydir)) $(LIBS) $(LD_FLAGS)
+LDFLAGS += $(foreach librarydir,$(LIBRARY_DIRS),-L$(librarydir)) $(LIBS)
 STATIC_LD_FLAGS := $(foreach librarydir,$(LIBRARY_DIRS),-L$(librarydir)) $(STATIC_FLAGS) $(LIBS) $(STATIC_LD_FLAGS)
 
 
 ${BIN_TARGET}:${OBJ}
-	$(CXX) $(OBJ) -o $@ $(LD_FLAGS)
+	$(CXX) $(OBJ) -o $@ $(LDFLAGS)
 
 static:${OBJ}
 	$(CXX) $(OBJ) -o ${BIN_TARGET} $(STATIC_LD_FLAGS)
 
 ${DIR_OBJ}/%.o:${DIR_SRC}/%.cpp make_obj_dir
-	$(CXX) -c $< -o $@ $(CXXFLAGS)
+	$(CXX) -c $< -o $@ $(CPPFLAGS) $(CXXFLAGS)
 
 .PHONY:clean
 .PHONY:static