--- makefile.lnx.orig	2019-02-06 11:40:45 UTC
+++ makefile.lnx
@@ -15,7 +15,7 @@ UNIX_TOOLS = 1
 ifdef DEBUGMODE
 
 # -- debugging build --
-CFLAGS = -g -DDEBUG $(WFLAGS)
+CFLAGS += -g -DDEBUG $(WFLAGS)
 LFLAGS = -g
 DESCRIPTION = debugging
 
@@ -23,14 +23,14 @@ else
 ifdef PROFILEMODE
 
 # -- profiling build --
-CFLAGS = -pg $(WFLAGS) $(OFLAGS)
+CFLAGS += -pg $(WFLAGS) $(OFLAGS)
 LFLAGS = -pg
 DESCRIPTION = profiling
 
 else
 
 # -- optimised build --
-CFLAGS = $(WFLAGS) $(OFLAGS)
+CFLAGS += $(WFLAGS)
 LFLAGS = -s
 DESCRIPTION = optimized