diff --git a/arch/sim/src/Makefile b/arch/sim/src/Makefile
index 8703c86de9c..e8ac6b2dd4e 100644
--- a/arch/sim/src/Makefile
+++ b/arch/sim/src/Makefile
@@ -294,14 +294,14 @@ nuttx$(EXEEXT): libarch$(LIBEXT) board/libboard$(LIBEXT) $(HEADOBJ) $(LINKOBJS)
 	$(Q) $(LD) -r $(LDLINKFLAGS) $(RELPATHS) $(EXTRA_LIBPATHS) -o nuttx.rel $(REQUIREDOBJS) $(LDSTARTGROUP) $(RELLIBS) $(EXTRA_LIBS) $(LDENDGROUP)
 ifneq ($(CONFIG_HOST_MACOS),y)
 	$(Q) $(OBJCOPY) --redefine-syms=nuttx-names.dat nuttx.rel
-	$(Q) $(CC) $(CCLINKFLAGS) -Wl,-verbose 2>&1 | \
+	$(Q) $(CC) $(CFLAGS) -Wl,-verbose 2>&1 | \
 	     sed -e '/====/,/====/!d;//d' -e 's/__executable_start/_stext/g' -e 's/__init_array_start/_sinit/g' \
 	         -e 's/__init_array_end/_einit/g' -e 's/__fini_array_start/_sfini/g' -e 's/__fini_array_end/_efini/g' >nuttx.ld
 	$(Q) echo "__init_array_start = .; __init_array_end = .; __fini_array_start = .; __fini_array_end = .;" >>nuttx.ld
 endif
 	$(if $(CONFIG_HAVE_CXX),\
-	$(Q) "$(CXX)" $(CCLINKFLAGS) $(LIBPATHS) $(LDFLAGS) -o $(TOPDIR)/$@ $(HEADOBJ) nuttx.rel $(HOSTOBJS) $(STDLIBS),\
-	$(Q) "$(CC)" $(CCLINKFLAGS) $(LIBPATHS) $(LDFLAGS) -o $(TOPDIR)/$@ $(HEADOBJ) nuttx.rel $(HOSTOBJS) $(STDLIBS))
+	$(Q) "$(CXX)" $(CFLAGS) $(LIBPATHS) $(LDFLAGS) -o $(TOPDIR)/$@ $(HEADOBJ) nuttx.rel $(HOSTOBJS) $(STDLIBS),\
+	$(Q) "$(CC)" $(CFLAGS) $(LIBPATHS) $(LDFLAGS) -o $(TOPDIR)/$@ $(HEADOBJ) nuttx.rel $(HOSTOBJS) $(STDLIBS))
 	$(Q) $(NM) $(TOPDIR)/$@ | \
 		grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
 		sort > $(TOPDIR)/System.map
diff --git a/boards/sim/sim/sim/scripts/Make.defs b/boards/sim/sim/sim/scripts/Make.defs
index af1b2f13d7f..0091988123f 100644
--- a/boards/sim/sim/sim/scripts/Make.defs
+++ b/boards/sim/sim/sim/scripts/Make.defs
@@ -204,34 +204,13 @@ endif
 LDELFFLAGS = -r -e main
 LDELFFLAGS += -T $(call CONVERT_PATH,$(BOARD_DIR)$(DELIM)scripts$(DELIM)gnu-elf.ld)
 
-ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
-  CCLINKFLAGS += -g
-endif
-
 ifeq ($(CONFIG_SIM_M32),y)
   LDLINKFLAGS += -melf_i386
-  CCLINKFLAGS += -m32
   LDFLAGS += -m32
   LDMODULEFLAGS += -melf_i386
   LDELFFLAGS += -melf_i386
   HOSTLDFLAGS += -m32
 endif
 
-ifeq ($(CONFIG_SIM_ASAN),y)
-  CCLINKFLAGS += -fsanitize=address
-else ifeq ($(CONFIG_MM_KASAN),y)
-  CCLINKFLAGS += -fsanitize=kernel-address
-endif
-
-ifeq ($(CONFIG_SIM_UBSAN),y)
-  CCLINKFLAGS += -fsanitize=undefined
-endif
-
-ifeq ($(CONFIG_FRAME_POINTER),y)
-  CCLINKFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
-else
-  CCLINKFLAGS += -fomit-frame-pointer
-endif
-
 HOSTCFLAGS = $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
    $(ARCHCFLAGS) $(HOSTINCLUDES) $(EXTRAFLAGS) -D__SIM__ -pipe